GET https://kbin.spritesserver.nl/index.php/u/@Max_P@lemmy.max-p.me/hot/2023-11-10::2023-11-10

Response
200 OK
IP
216.73.216.21
Profiled on
Token
0f68f1

Security

Token

There is no security token.

Firewall

main Name
Security enabled
Stateless

Configuration

Key Value
provider security.user.provider.concrete.app_user_provider
context main
entry_point App\Security\KbinAuthenticator
user_checker App\Security\UserChecker
access_denied_handler (none)
access_denied_url (none)
authenticators 
[
  "two_factor"
  "remember_me"
  "App\Security\KbinAuthenticator"
  "App\Security\FacebookAuthenticator"
  "App\Security\GoogleAuthenticator"
  "App\Security\GithubAuthenticator"
  "App\Security\KeycloakAuthenticator"
]

Listeners

Listener Duration Response 
Symfony\Component\Security\Http\Firewall\ChannelListener {#723
  -map: Symfony\Component\Security\Http\AccessMap {#722 …}
  -logger: Monolog\Logger {#783 …}
  -httpPort: 80
  -httpsPort: 443
}
 0.00 ms (none) 
Symfony\Component\Security\Http\Firewall\ContextListener {#706
  -tokenStorage: Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorage {#1017 …}
  -sessionKey: "_security_main"
  -logger: Monolog\Logger {#783 …}
  -userProviders: Symfony\Component\DependencyInjection\Argument\RewindableGenerator {#705 …}
  -dispatcher: Symfony\Component\EventDispatcher\Debug\TraceableEventDispatcher {#747 …}
  -registered: false
  -trustResolver: Scheb\TwoFactorBundle\Security\Authentication\AuthenticationTrustResolver {#780 …}
  -sessionTrackerEnabler: Symfony\Component\Security\Core\Authentication\Token\Storage\UsageTrackingTokenStorage::enableUsageTracking(): void {#703 …}
}
 0.92 ms (none) 
Symfony\Component\Security\Http\Firewall\AuthenticatorManagerListener {#584
  -authenticatorManager: Symfony\Component\Security\Http\Authentication\AuthenticatorManager {#595 …}
}
 0.00 ms (none) 
Scheb\TwoFactorBundle\Security\Http\Firewall\TwoFactorAccessListener {#582
  -twoFactorFirewallConfig: Scheb\TwoFactorBundle\Security\TwoFactor\TwoFactorFirewallConfig {#842 …}
  -tokenStorage: Symfony\Component\Security\Core\Authentication\Token\Storage\UsageTrackingTokenStorage {#1018 …}
  -twoFactorAccessDecider: Scheb\TwoFactorBundle\Security\Authorization\TwoFactorAccessDecider {#581 …}
}
 0.06 ms (none) 
Symfony\Component\Security\Http\Firewall\AccessListener {#579
  -tokenStorage: Symfony\Component\Security\Core\Authentication\Token\Storage\UsageTrackingTokenStorage {#1018 …}
  -accessDecisionManager: Symfony\Component\Security\Core\Authorization\TraceableAccessDecisionManager {#937 …}
  -map: Symfony\Component\Security\Http\AccessMap {#722 …}
}
 0.00 ms (none) 
Symfony\Component\Security\Http\Firewall\LogoutListener {#786
  -tokenStorage: Symfony\Component\Security\Core\Authentication\Token\Storage\UsageTrackingTokenStorage {#1018 …}
  -options: [
    "csrf_parameter" => "_csrf_token"
    "csrf_token_id" => "logout"
    "logout_path" => "app_logout"
  ]
  -httpUtils: Symfony\Component\Security\Http\HttpUtils {#841 …}
  -csrfTokenManager: Symfony\Component\Security\Csrf\CsrfTokenManager {#1015 …}
  -eventDispatcher: Symfony\Component\EventDispatcher\Debug\TraceableEventDispatcher {#747 …}
}
 0.00 ms (none)

Authenticators

No authenticators have been recorded. Check previous profiles on your authentication endpoint.

Access Decision

affirmative Strategy
# Voter class
1 
"Symfony\Component\Security\Core\Authorization\Voter\AuthenticatedVoter"
2 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
3 
"Symfony\Component\Security\Core\Authorization\Voter\RoleHierarchyVoter"
4 
"Symfony\Component\Security\Core\Authorization\Voter\ExpressionVoter"
5 
"App\Security\Voter\EntryCommentVoter"
6 
"App\Security\Voter\EntryVoter"
7 
"App\Security\Voter\MagazineVoter"
8 
"App\Security\Voter\MessageThreadVoter"
9 
"App\Security\Voter\MessageVoter"
10 
"App\Security\Voter\NotificationVoter"
11 
"App\Security\Voter\OAuth2UserConsentVoter"
12 
"App\Security\Voter\PostCommentVoter"
13 
"App\Security\Voter\PostVoter"
14 
"App\Security\Voter\UserVoter"

Access decision log

# Result Attributes Object
1 DENIED ROLE_USER 
null
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"Symfony\Component\Security\Core\Authorization\Voter\RoleHierarchyVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
2 DENIED moderate 
Proxies\__CG__\App\Entity\Entry {#1551
  +user: Proxies\__CG__\App\Entity\User {#1740 …}
  +magazine: Proxies\__CG__\App\Entity\Magazine {#1550 …}
  +image: Proxies\__CG__\App\Entity\Image {#2392 …}
  +domain: Proxies\__CG__\App\Entity\Domain {#2026 …}
  +slug: "Why-btrfs-gets-huge-perf-hit-with-background-IO-work"
  +title: "Why btrfs gets huge perf hit with background IO work?"
  +url: "https://lemmy.world/pictrs/image/7ca726e4-b738-4b93-b60e-f9cee58a1be9.png"
  +body: null
  +type: "image"
  +lang: "en"
  +isOc: false
  +hasEmbed: true
  +commentCount: 36
  +favouriteCount: 118
  +score: 0
  +isAdult: false
  +sticky: false
  +lastActive: DateTime @1700047530 {#2462
    date: 2023-11-15 12:25:30.0 +01:00
  }
  +ip: null
  +adaAmount: 0
  +tags: null
  +mentions: null
  +comments: Doctrine\ORM\PersistentCollection {#2032 …}
  +votes: Doctrine\ORM\PersistentCollection {#2023 …}
  +reports: Doctrine\ORM\PersistentCollection {#1362 …}
  +favourites: Doctrine\ORM\PersistentCollection {#2085 …}
  +notifications: Doctrine\ORM\PersistentCollection {#2076 …}
  +badges: Doctrine\ORM\PersistentCollection {#2091 …}
  +children: [
    1 => App\Entity\EntryComment {#1648
      +user: App\Entity\User {#263 …}
      +entry: Proxies\__CG__\App\Entity\Entry {#1551 …2}
      +magazine: Proxies\__CG__\App\Entity\Magazine {#1550 …}
      +image: null
      +parent: Proxies\__CG__\App\Entity\EntryComment {#1571 …}
      +root: Proxies\__CG__\App\Entity\EntryComment {#1571 …}
      +body: """
        It’s mostly better, but not in every way. It has a lot of useful features, at a performance cost sometimes. A cost that historically wasn’t a problem with spinning hard drives and relatively slow SATA SSDs but will show up more on really fast NVMes.\n
        \n
        The snapshots, it has to keep track of what’s been modified. Depending on the block size, an update of just a couple bytes can end up as a few 4k write because it’s Copy-on-Write and it has to update a journal and it has to update the block list of the file. But at the same time, copying a 50GB file is instantaneous on btrfs because of the same CoW feature. Most people find the snapshots more useful than eeking out every last bit of performance out of your drive.\n
        \n
        Even ZFS, often considered to be the gold standard of filesystems, is actually kinda slow. But its purpose isn’t to be the fastest, its purpose is throwing an array of 200 drives at it and trusting it to protect you even against some media degradation and random bit flips in your storage with regular scrubs.
        """
      +lang: "en"
      +isAdult: false
      +favouriteCount: 16
      +score: 0
      +lastActive: DateTime @1699641934 {#1709
        date: 2023-11-10 19:45:34.0 +01:00
      }
      +ip: null
      +tags: null
      +mentions: [
        "@Alawami@lemmy.world"
        "@blitzkrieg@lemm.ee"
      ]
      +children: Doctrine\ORM\PersistentCollection {#1589 …}
      +nested: Doctrine\ORM\PersistentCollection {#1592 …}
      +votes: Doctrine\ORM\PersistentCollection {#1552 …}
      +reports: Doctrine\ORM\PersistentCollection {#1663 …}
      +favourites: Doctrine\ORM\PersistentCollection {#1563 …}
      +notifications: Doctrine\ORM\PersistentCollection {#1566 …}
      -id: 108649
      -bodyTs: "'200':174 '4k':78 '50gb':112 'actual':155 'array':172 'better':4 'bit':136,191 'block':63,100 'btrfs':117 'byte':71 'consid':146 'copi':84,110 'copy-on-writ':83 'cost':20,23 'coupl':70 'cow':122 'degrad':188 'depend':60 'drive':33,142,175 'eek':132 'end':73 'even':143,184 'everi':8,134 'fast':46 'fastest':166 'featur':16,123 'file':104,113 'filesystem':153 'find':126 'flip':192 'gold':150 'hard':32 'histor':25 'instantan':115 'isn':161 'journal':93 'keep':53 'kinda':156 'last':135 'list':101 'lot':13 'media':187 'modifi':59 'most':3 'nvmes':47 'often':145 'peopl':125 'perform':19,138 'problem':29 'protect':182 'purpos':160,168 'random':190 'realli':45 'regular':197 'relat':35 'sata':37 'scrub':198 'show':41 'size':64 'slow':36,157 'snapshot':49,128 'sometim':21 'spin':31 'ssds':38 'standard':151 'storag':195 'throw':170 'time':109 'track':54 'trust':179 'updat':66,91,98 'use':15,130 'wasn':26 'way':9 'write':79,86 'zfs':144"
      +ranking: 0
      +commentCount: 0
      +upVotes: 0
      +downVotes: 0
      +visibility: "visible             "
      +apId: "https://lemmy.max-p.me/comment/1416904"
      +editedAt: null
      +createdAt: DateTimeImmutable @1699641934 {#1614
        date: 2023-11-10 19:45:34.0 +01:00
      }
      +"title": 108649
    }
    0 => App\Entity\EntryComment {#1619
      +user: App\Entity\User {#263 …}
      +entry: Proxies\__CG__\App\Entity\Entry {#1551 …2}
      +magazine: Proxies\__CG__\App\Entity\Magazine {#1550 …}
      +image: null
      +parent: Proxies\__CG__\App\Entity\EntryComment {#1604 …}
      +root: Proxies\__CG__\App\Entity\EntryComment {#1571 …}
      +body: """
        > People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)\n
        \n
        ZFS made me discover that my onboard SATA controller sucks and returns bad data occasionally under heavy load. My computer cannot complete a ZFS scrub without finding errors, every single time.\n
        \n
        Ext4, bcache and mdadm never complained about it, ever. There was never any sign that something was wrong at all.\n
        \n
        100% worth it if you care about your data. I can definitely feel the hit on my NVMe but it’s also doing so much more.
        """
      +lang: "en"
      +isAdult: false
      +favouriteCount: 3
      +score: 0
      +lastActive: DateTime @1699654740 {#1526
        date: 2023-11-10 23:19:00.0 +01:00
      }
      +ip: null
      +tags: null
      +mentions: [
        "@Alawami@lemmy.world"
        "@blitzkrieg@lemm.ee"
        "@Max_P@lemmy.max-p.me"
        "@yote_zip@pawb.social"
      ]
      +children: Doctrine\ORM\PersistentCollection {#1621 …}
      +nested: Doctrine\ORM\PersistentCollection {#1702 …}
      +votes: Doctrine\ORM\PersistentCollection {#1683 …}
      +reports: Doctrine\ORM\PersistentCollection {#1680 …}
      +favourites: Doctrine\ORM\PersistentCollection {#1686 …}
      +notifications: Doctrine\ORM\PersistentCollection {#1692 …}
      -id: 109241
      -bodyTs: "'100':90 'also':111 'bad':28,37,51 'bcach':71 'bitrot':17,19 'btrfs':24 'cannot':59 'care':95 'checksum':29 'complain':75 'complet':60 'comput':58 'control':47 'data':52,98 'decad':8 'definit':101 'discov':42 'error':66 'ever':78 'everi':67 'exist':22 'ext4':5,12,70 'feel':102 'filesystem':38 'find':65 'heavi':55 'hit':104 'load':56 'made':40 'mdadm':73 'much':114 'never':74,81 'nvme':107 'occasion':53 'onboard':45 'peopl':1,31 'pick':25 'pretend':9 'return':50 'run':4 'sata':46 'scold':32 'scrub':63 'see':15 'sign':83 'singl':68 'someth':85 'suck':48 'system':6 'time':69 'without':64 'worth':91 'wrong':87 'zfs':39,62"
      +ranking: 0
      +commentCount: 0
      +upVotes: 0
      +downVotes: 0
      +visibility: "visible             "
      +apId: "https://lemmy.max-p.me/comment/1418570"
      +editedAt: null
      +createdAt: DateTimeImmutable @1699654740 {#1596
        date: 2023-11-10 23:19:00.0 +01:00
      }
      +"title": 109241
    }
  ]
  -id: 11764
  -titleTs: "'background':8 'btrfs':2 'get':3 'hit':6 'huge':4 'io':9 'perf':5 'work':10"
  -bodyTs: null
  +cross: false
  +upVotes: 0
  +downVotes: 0
  +ranking: 1699715383
  +visibility: "visible             "
  +apId: "https://lemmy.world/post/8066421"
  +editedAt: null
  +createdAt: DateTimeImmutable @1699628983 {#1641
    date: 2023-11-10 16:09:43.0 +01:00
  }
  +__isInitialized__: true
   …2
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS DENIED 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
3 DENIED edit 
Proxies\__CG__\App\Entity\Entry {#1551
  +user: Proxies\__CG__\App\Entity\User {#1740 …}
  +magazine: Proxies\__CG__\App\Entity\Magazine {#1550 …}
  +image: Proxies\__CG__\App\Entity\Image {#2392 …}
  +domain: Proxies\__CG__\App\Entity\Domain {#2026 …}
  +slug: "Why-btrfs-gets-huge-perf-hit-with-background-IO-work"
  +title: "Why btrfs gets huge perf hit with background IO work?"
  +url: "https://lemmy.world/pictrs/image/7ca726e4-b738-4b93-b60e-f9cee58a1be9.png"
  +body: null
  +type: "image"
  +lang: "en"
  +isOc: false
  +hasEmbed: true
  +commentCount: 36
  +favouriteCount: 118
  +score: 0
  +isAdult: false
  +sticky: false
  +lastActive: DateTime @1700047530 {#2462
    date: 2023-11-15 12:25:30.0 +01:00
  }
  +ip: null
  +adaAmount: 0
  +tags: null
  +mentions: null
  +comments: Doctrine\ORM\PersistentCollection {#2032 …}
  +votes: Doctrine\ORM\PersistentCollection {#2023 …}
  +reports: Doctrine\ORM\PersistentCollection {#1362 …}
  +favourites: Doctrine\ORM\PersistentCollection {#2085 …}
  +notifications: Doctrine\ORM\PersistentCollection {#2076 …}
  +badges: Doctrine\ORM\PersistentCollection {#2091 …}
  +children: [
    1 => App\Entity\EntryComment {#1648
      +user: App\Entity\User {#263 …}
      +entry: Proxies\__CG__\App\Entity\Entry {#1551 …2}
      +magazine: Proxies\__CG__\App\Entity\Magazine {#1550 …}
      +image: null
      +parent: Proxies\__CG__\App\Entity\EntryComment {#1571 …}
      +root: Proxies\__CG__\App\Entity\EntryComment {#1571 …}
      +body: """
        It’s mostly better, but not in every way. It has a lot of useful features, at a performance cost sometimes. A cost that historically wasn’t a problem with spinning hard drives and relatively slow SATA SSDs but will show up more on really fast NVMes.\n
        \n
        The snapshots, it has to keep track of what’s been modified. Depending on the block size, an update of just a couple bytes can end up as a few 4k write because it’s Copy-on-Write and it has to update a journal and it has to update the block list of the file. But at the same time, copying a 50GB file is instantaneous on btrfs because of the same CoW feature. Most people find the snapshots more useful than eeking out every last bit of performance out of your drive.\n
        \n
        Even ZFS, often considered to be the gold standard of filesystems, is actually kinda slow. But its purpose isn’t to be the fastest, its purpose is throwing an array of 200 drives at it and trusting it to protect you even against some media degradation and random bit flips in your storage with regular scrubs.
        """
      +lang: "en"
      +isAdult: false
      +favouriteCount: 16
      +score: 0
      +lastActive: DateTime @1699641934 {#1709
        date: 2023-11-10 19:45:34.0 +01:00
      }
      +ip: null
      +tags: null
      +mentions: [
        "@Alawami@lemmy.world"
        "@blitzkrieg@lemm.ee"
      ]
      +children: Doctrine\ORM\PersistentCollection {#1589 …}
      +nested: Doctrine\ORM\PersistentCollection {#1592 …}
      +votes: Doctrine\ORM\PersistentCollection {#1552 …}
      +reports: Doctrine\ORM\PersistentCollection {#1663 …}
      +favourites: Doctrine\ORM\PersistentCollection {#1563 …}
      +notifications: Doctrine\ORM\PersistentCollection {#1566 …}
      -id: 108649
      -bodyTs: "'200':174 '4k':78 '50gb':112 'actual':155 'array':172 'better':4 'bit':136,191 'block':63,100 'btrfs':117 'byte':71 'consid':146 'copi':84,110 'copy-on-writ':83 'cost':20,23 'coupl':70 'cow':122 'degrad':188 'depend':60 'drive':33,142,175 'eek':132 'end':73 'even':143,184 'everi':8,134 'fast':46 'fastest':166 'featur':16,123 'file':104,113 'filesystem':153 'find':126 'flip':192 'gold':150 'hard':32 'histor':25 'instantan':115 'isn':161 'journal':93 'keep':53 'kinda':156 'last':135 'list':101 'lot':13 'media':187 'modifi':59 'most':3 'nvmes':47 'often':145 'peopl':125 'perform':19,138 'problem':29 'protect':182 'purpos':160,168 'random':190 'realli':45 'regular':197 'relat':35 'sata':37 'scrub':198 'show':41 'size':64 'slow':36,157 'snapshot':49,128 'sometim':21 'spin':31 'ssds':38 'standard':151 'storag':195 'throw':170 'time':109 'track':54 'trust':179 'updat':66,91,98 'use':15,130 'wasn':26 'way':9 'write':79,86 'zfs':144"
      +ranking: 0
      +commentCount: 0
      +upVotes: 0
      +downVotes: 0
      +visibility: "visible             "
      +apId: "https://lemmy.max-p.me/comment/1416904"
      +editedAt: null
      +createdAt: DateTimeImmutable @1699641934 {#1614
        date: 2023-11-10 19:45:34.0 +01:00
      }
      +"title": 108649
    }
    0 => App\Entity\EntryComment {#1619
      +user: App\Entity\User {#263 …}
      +entry: Proxies\__CG__\App\Entity\Entry {#1551 …2}
      +magazine: Proxies\__CG__\App\Entity\Magazine {#1550 …}
      +image: null
      +parent: Proxies\__CG__\App\Entity\EntryComment {#1604 …}
      +root: Proxies\__CG__\App\Entity\EntryComment {#1571 …}
      +body: """
        > People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)\n
        \n
        ZFS made me discover that my onboard SATA controller sucks and returns bad data occasionally under heavy load. My computer cannot complete a ZFS scrub without finding errors, every single time.\n
        \n
        Ext4, bcache and mdadm never complained about it, ever. There was never any sign that something was wrong at all.\n
        \n
        100% worth it if you care about your data. I can definitely feel the hit on my NVMe but it’s also doing so much more.
        """
      +lang: "en"
      +isAdult: false
      +favouriteCount: 3
      +score: 0
      +lastActive: DateTime @1699654740 {#1526
        date: 2023-11-10 23:19:00.0 +01:00
      }
      +ip: null
      +tags: null
      +mentions: [
        "@Alawami@lemmy.world"
        "@blitzkrieg@lemm.ee"
        "@Max_P@lemmy.max-p.me"
        "@yote_zip@pawb.social"
      ]
      +children: Doctrine\ORM\PersistentCollection {#1621 …}
      +nested: Doctrine\ORM\PersistentCollection {#1702 …}
      +votes: Doctrine\ORM\PersistentCollection {#1683 …}
      +reports: Doctrine\ORM\PersistentCollection {#1680 …}
      +favourites: Doctrine\ORM\PersistentCollection {#1686 …}
      +notifications: Doctrine\ORM\PersistentCollection {#1692 …}
      -id: 109241
      -bodyTs: "'100':90 'also':111 'bad':28,37,51 'bcach':71 'bitrot':17,19 'btrfs':24 'cannot':59 'care':95 'checksum':29 'complain':75 'complet':60 'comput':58 'control':47 'data':52,98 'decad':8 'definit':101 'discov':42 'error':66 'ever':78 'everi':67 'exist':22 'ext4':5,12,70 'feel':102 'filesystem':38 'find':65 'heavi':55 'hit':104 'load':56 'made':40 'mdadm':73 'much':114 'never':74,81 'nvme':107 'occasion':53 'onboard':45 'peopl':1,31 'pick':25 'pretend':9 'return':50 'run':4 'sata':46 'scold':32 'scrub':63 'see':15 'sign':83 'singl':68 'someth':85 'suck':48 'system':6 'time':69 'without':64 'worth':91 'wrong':87 'zfs':39,62"
      +ranking: 0
      +commentCount: 0
      +upVotes: 0
      +downVotes: 0
      +visibility: "visible             "
      +apId: "https://lemmy.max-p.me/comment/1418570"
      +editedAt: null
      +createdAt: DateTimeImmutable @1699654740 {#1596
        date: 2023-11-10 23:19:00.0 +01:00
      }
      +"title": 109241
    }
  ]
  -id: 11764
  -titleTs: "'background':8 'btrfs':2 'get':3 'hit':6 'huge':4 'io':9 'perf':5 'work':10"
  -bodyTs: null
  +cross: false
  +upVotes: 0
  +downVotes: 0
  +ranking: 1699715383
  +visibility: "visible             "
  +apId: "https://lemmy.world/post/8066421"
  +editedAt: null
  +createdAt: DateTimeImmutable @1699628983 {#1641
    date: 2023-11-10 16:09:43.0 +01:00
  }
  +__isInitialized__: true
   …2
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS DENIED 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
4 DENIED moderate 
Proxies\__CG__\App\Entity\Entry {#1551
  +user: Proxies\__CG__\App\Entity\User {#1740 …}
  +magazine: Proxies\__CG__\App\Entity\Magazine {#1550 …}
  +image: Proxies\__CG__\App\Entity\Image {#2392 …}
  +domain: Proxies\__CG__\App\Entity\Domain {#2026 …}
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        It’s mostly better, but not in every way. It has a lot of useful features, at a performance cost sometimes. A cost that historically wasn’t a problem with spinning hard drives and relatively slow SATA SSDs but will show up more on really fast NVMes.\n
        \n
        The snapshots, it has to keep track of what’s been modified. Depending on the block size, an update of just a couple bytes can end up as a few 4k write because it’s Copy-on-Write and it has to update a journal and it has to update the block list of the file. But at the same time, copying a 50GB file is instantaneous on btrfs because of the same CoW feature. Most people find the snapshots more useful than eeking out every last bit of performance out of your drive.\n
        \n
        Even ZFS, often considered to be the gold standard of filesystems, is actually kinda slow. But its purpose isn’t to be the fastest, its purpose is throwing an array of 200 drives at it and trusting it to protect you even against some media degradation and random bit flips in your storage with regular scrubs.
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        "@blitzkrieg@lemm.ee"
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      -bodyTs: "'200':174 '4k':78 '50gb':112 'actual':155 'array':172 'better':4 'bit':136,191 'block':63,100 'btrfs':117 'byte':71 'consid':146 'copi':84,110 'copy-on-writ':83 'cost':20,23 'coupl':70 'cow':122 'degrad':188 'depend':60 'drive':33,142,175 'eek':132 'end':73 'even':143,184 'everi':8,134 'fast':46 'fastest':166 'featur':16,123 'file':104,113 'filesystem':153 'find':126 'flip':192 'gold':150 'hard':32 'histor':25 'instantan':115 'isn':161 'journal':93 'keep':53 'kinda':156 'last':135 'list':101 'lot':13 'media':187 'modifi':59 'most':3 'nvmes':47 'often':145 'peopl':125 'perform':19,138 'problem':29 'protect':182 'purpos':160,168 'random':190 'realli':45 'regular':197 'relat':35 'sata':37 'scrub':198 'show':41 'size':64 'slow':36,157 'snapshot':49,128 'sometim':21 'spin':31 'ssds':38 'standard':151 'storag':195 'throw':170 'time':109 'track':54 'trust':179 'updat':66,91,98 'use':15,130 'wasn':26 'way':9 'write':79,86 'zfs':144"
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      +"title": 108649
    }
    0 => App\Entity\EntryComment {#1619
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        > People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)\n
        \n
        ZFS made me discover that my onboard SATA controller sucks and returns bad data occasionally under heavy load. My computer cannot complete a ZFS scrub without finding errors, every single time.\n
        \n
        Ext4, bcache and mdadm never complained about it, ever. There was never any sign that something was wrong at all.\n
        \n
        100% worth it if you care about your data. I can definitely feel the hit on my NVMe but it’s also doing so much more.
        """
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        "@blitzkrieg@lemm.ee"
        "@Max_P@lemmy.max-p.me"
        "@yote_zip@pawb.social"
      ]
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          > People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)\n
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          ZFS made me discover that my onboard SATA controller sucks and returns bad data occasionally under heavy load. My computer cannot complete a ZFS scrub without finding errors, every single time.\n
          \n
          Ext4, bcache and mdadm never complained about it, ever. There was never any sign that something was wrong at all.\n
          \n
          100% worth it if you care about your data. I can definitely feel the hit on my NVMe but it’s also doing so much more.
          """
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    It’s mostly better, but not in every way. It has a lot of useful features, at a performance cost sometimes. A cost that historically wasn’t a problem with spinning hard drives and relatively slow SATA SSDs but will show up more on really fast NVMes.\n
    \n
    The snapshots, it has to keep track of what’s been modified. Depending on the block size, an update of just a couple bytes can end up as a few 4k write because it’s Copy-on-Write and it has to update a journal and it has to update the block list of the file. But at the same time, copying a 50GB file is instantaneous on btrfs because of the same CoW feature. Most people find the snapshots more useful than eeking out every last bit of performance out of your drive.\n
    \n
    Even ZFS, often considered to be the gold standard of filesystems, is actually kinda slow. But its purpose isn’t to be the fastest, its purpose is throwing an array of 200 drives at it and trusting it to protect you even against some media degradation and random bit flips in your storage with regular scrubs.
    """
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}
 
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7 DENIED edit 
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          > People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)\n
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          ZFS made me discover that my onboard SATA controller sucks and returns bad data occasionally under heavy load. My computer cannot complete a ZFS scrub without finding errors, every single time.\n
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          100% worth it if you care about your data. I can definitely feel the hit on my NVMe but it’s also doing so much more.
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    -titleTs: "'background':8 'btrfs':2 'get':3 'hit':6 'huge':4 'io':9 'perf':5 'work':10"
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    +upVotes: 0
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    +ranking: 1699715383
    +visibility: "visible             "
    +apId: "https://lemmy.world/post/8066421"
    +editedAt: null
    +createdAt: DateTimeImmutable @1699628983 {#1641
      date: 2023-11-10 16:09:43.0 +01:00
    }
    +__isInitialized__: true
     …2
  }
  +magazine: Proxies\__CG__\App\Entity\Magazine {#1550 …}
  +image: null
  +parent: Proxies\__CG__\App\Entity\EntryComment {#1571 …}
  +root: Proxies\__CG__\App\Entity\EntryComment {#1571 …}
  +body: """
    It’s mostly better, but not in every way. It has a lot of useful features, at a performance cost sometimes. A cost that historically wasn’t a problem with spinning hard drives and relatively slow SATA SSDs but will show up more on really fast NVMes.\n
    \n
    The snapshots, it has to keep track of what’s been modified. Depending on the block size, an update of just a couple bytes can end up as a few 4k write because it’s Copy-on-Write and it has to update a journal and it has to update the block list of the file. But at the same time, copying a 50GB file is instantaneous on btrfs because of the same CoW feature. Most people find the snapshots more useful than eeking out every last bit of performance out of your drive.\n
    \n
    Even ZFS, often considered to be the gold standard of filesystems, is actually kinda slow. But its purpose isn’t to be the fastest, its purpose is throwing an array of 200 drives at it and trusting it to protect you even against some media degradation and random bit flips in your storage with regular scrubs.
    """
  +lang: "en"
  +isAdult: false
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  +lastActive: DateTime @1699641934 {#1709
    date: 2023-11-10 19:45:34.0 +01:00
  }
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  +tags: null
  +mentions: [
    "@Alawami@lemmy.world"
    "@blitzkrieg@lemm.ee"
  ]
  +children: Doctrine\ORM\PersistentCollection {#1589 …}
  +nested: Doctrine\ORM\PersistentCollection {#1592 …}
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  +reports: Doctrine\ORM\PersistentCollection {#1663 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1563 …}
  +notifications: Doctrine\ORM\PersistentCollection {#1566 …}
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  -bodyTs: "'200':174 '4k':78 '50gb':112 'actual':155 'array':172 'better':4 'bit':136,191 'block':63,100 'btrfs':117 'byte':71 'consid':146 'copi':84,110 'copy-on-writ':83 'cost':20,23 'coupl':70 'cow':122 'degrad':188 'depend':60 'drive':33,142,175 'eek':132 'end':73 'even':143,184 'everi':8,134 'fast':46 'fastest':166 'featur':16,123 'file':104,113 'filesystem':153 'find':126 'flip':192 'gold':150 'hard':32 'histor':25 'instantan':115 'isn':161 'journal':93 'keep':53 'kinda':156 'last':135 'list':101 'lot':13 'media':187 'modifi':59 'most':3 'nvmes':47 'often':145 'peopl':125 'perform':19,138 'problem':29 'protect':182 'purpos':160,168 'random':190 'realli':45 'regular':197 'relat':35 'sata':37 'scrub':198 'show':41 'size':64 'slow':36,157 'snapshot':49,128 'sometim':21 'spin':31 'ssds':38 'standard':151 'storag':195 'throw':170 'time':109 'track':54 'trust':179 'updat':66,91,98 'use':15,130 'wasn':26 'way':9 'write':79,86 'zfs':144"
  +ranking: 0
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  +editedAt: null
  +createdAt: DateTimeImmutable @1699641934 {#1614
    date: 2023-11-10 19:45:34.0 +01:00
  }
  +"title": 108649
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
8 DENIED moderate 
App\Entity\EntryComment {#1648
  +user: App\Entity\User {#263 …}
  +entry: Proxies\__CG__\App\Entity\Entry {#1551
    +user: Proxies\__CG__\App\Entity\User {#1740 …}
    +magazine: Proxies\__CG__\App\Entity\Magazine {#1550 …}
    +image: Proxies\__CG__\App\Entity\Image {#2392 …}
    +domain: Proxies\__CG__\App\Entity\Domain {#2026 …}
    +slug: "Why-btrfs-gets-huge-perf-hit-with-background-IO-work"
    +title: "Why btrfs gets huge perf hit with background IO work?"
    +url: "https://lemmy.world/pictrs/image/7ca726e4-b738-4b93-b60e-f9cee58a1be9.png"
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    +comments: Doctrine\ORM\PersistentCollection {#2032 …}
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    +favourites: Doctrine\ORM\PersistentCollection {#2085 …}
    +notifications: Doctrine\ORM\PersistentCollection {#2076 …}
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      1 => App\Entity\EntryComment {#1648}
      0 => App\Entity\EntryComment {#1619
        +user: App\Entity\User {#263 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1551 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1550 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1604 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1571 …}
        +body: """
          > People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)\n
          \n
          ZFS made me discover that my onboard SATA controller sucks and returns bad data occasionally under heavy load. My computer cannot complete a ZFS scrub without finding errors, every single time.\n
          \n
          Ext4, bcache and mdadm never complained about it, ever. There was never any sign that something was wrong at all.\n
          \n
          100% worth it if you care about your data. I can definitely feel the hit on my NVMe but it’s also doing so much more.
          """
        +lang: "en"
        +isAdult: false
        +favouriteCount: 3
        +score: 0
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          "@Alawami@lemmy.world"
          "@blitzkrieg@lemm.ee"
          "@Max_P@lemmy.max-p.me"
          "@yote_zip@pawb.social"
        ]
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        +nested: Doctrine\ORM\PersistentCollection {#1702 …}
        +votes: Doctrine\ORM\PersistentCollection {#1683 …}
        +reports: Doctrine\ORM\PersistentCollection {#1680 …}
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        -id: 109241
        -bodyTs: "'100':90 'also':111 'bad':28,37,51 'bcach':71 'bitrot':17,19 'btrfs':24 'cannot':59 'care':95 'checksum':29 'complain':75 'complet':60 'comput':58 'control':47 'data':52,98 'decad':8 'definit':101 'discov':42 'error':66 'ever':78 'everi':67 'exist':22 'ext4':5,12,70 'feel':102 'filesystem':38 'find':65 'heavi':55 'hit':104 'load':56 'made':40 'mdadm':73 'much':114 'never':74,81 'nvme':107 'occasion':53 'onboard':45 'peopl':1,31 'pick':25 'pretend':9 'return':50 'run':4 'sata':46 'scold':32 'scrub':63 'see':15 'sign':83 'singl':68 'someth':85 'suck':48 'system':6 'time':69 'without':64 'worth':91 'wrong':87 'zfs':39,62"
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          date: 2023-11-10 23:19:00.0 +01:00
        }
        +"title": 109241
      }
    ]
    -id: 11764
    -titleTs: "'background':8 'btrfs':2 'get':3 'hit':6 'huge':4 'io':9 'perf':5 'work':10"
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    +visibility: "visible             "
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    +createdAt: DateTimeImmutable @1699628983 {#1641
      date: 2023-11-10 16:09:43.0 +01:00
    }
    +__isInitialized__: true
     …2
  }
  +magazine: Proxies\__CG__\App\Entity\Magazine {#1550 …}
  +image: null
  +parent: Proxies\__CG__\App\Entity\EntryComment {#1571 …}
  +root: Proxies\__CG__\App\Entity\EntryComment {#1571 …}
  +body: """
    It’s mostly better, but not in every way. It has a lot of useful features, at a performance cost sometimes. A cost that historically wasn’t a problem with spinning hard drives and relatively slow SATA SSDs but will show up more on really fast NVMes.\n
    \n
    The snapshots, it has to keep track of what’s been modified. Depending on the block size, an update of just a couple bytes can end up as a few 4k write because it’s Copy-on-Write and it has to update a journal and it has to update the block list of the file. But at the same time, copying a 50GB file is instantaneous on btrfs because of the same CoW feature. Most people find the snapshots more useful than eeking out every last bit of performance out of your drive.\n
    \n
    Even ZFS, often considered to be the gold standard of filesystems, is actually kinda slow. But its purpose isn’t to be the fastest, its purpose is throwing an array of 200 drives at it and trusting it to protect you even against some media degradation and random bit flips in your storage with regular scrubs.
    """
  +lang: "en"
  +isAdult: false
  +favouriteCount: 16
  +score: 0
  +lastActive: DateTime @1699641934 {#1709
    date: 2023-11-10 19:45:34.0 +01:00
  }
  +ip: null
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  +mentions: [
    "@Alawami@lemmy.world"
    "@blitzkrieg@lemm.ee"
  ]
  +children: Doctrine\ORM\PersistentCollection {#1589 …}
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  +votes: Doctrine\ORM\PersistentCollection {#1552 …}
  +reports: Doctrine\ORM\PersistentCollection {#1663 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1563 …}
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    date: 2023-11-10 19:45:34.0 +01:00
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  +"title": 108649
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
9 DENIED ROLE_USER 
null
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"Symfony\Component\Security\Core\Authorization\Voter\RoleHierarchyVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
10 DENIED moderate 
App\Entity\EntryComment {#1619
  +user: App\Entity\User {#263 …}
  +entry: Proxies\__CG__\App\Entity\Entry {#1551
    +user: Proxies\__CG__\App\Entity\User {#1740 …}
    +magazine: Proxies\__CG__\App\Entity\Magazine {#1550 …}
    +image: Proxies\__CG__\App\Entity\Image {#2392 …}
    +domain: Proxies\__CG__\App\Entity\Domain {#2026 …}
    +slug: "Why-btrfs-gets-huge-perf-hit-with-background-IO-work"
    +title: "Why btrfs gets huge perf hit with background IO work?"
    +url: "https://lemmy.world/pictrs/image/7ca726e4-b738-4b93-b60e-f9cee58a1be9.png"
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      date: 2023-11-15 12:25:30.0 +01:00
    }
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    +comments: Doctrine\ORM\PersistentCollection {#2032 …}
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    +favourites: Doctrine\ORM\PersistentCollection {#2085 …}
    +notifications: Doctrine\ORM\PersistentCollection {#2076 …}
    +badges: Doctrine\ORM\PersistentCollection {#2091 …}
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      1 => App\Entity\EntryComment {#1648
        +user: App\Entity\User {#263 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1551 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1550 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1571 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1571 …}
        +body: """
          It’s mostly better, but not in every way. It has a lot of useful features, at a performance cost sometimes. A cost that historically wasn’t a problem with spinning hard drives and relatively slow SATA SSDs but will show up more on really fast NVMes.\n
          \n
          The snapshots, it has to keep track of what’s been modified. Depending on the block size, an update of just a couple bytes can end up as a few 4k write because it’s Copy-on-Write and it has to update a journal and it has to update the block list of the file. But at the same time, copying a 50GB file is instantaneous on btrfs because of the same CoW feature. Most people find the snapshots more useful than eeking out every last bit of performance out of your drive.\n
          \n
          Even ZFS, often considered to be the gold standard of filesystems, is actually kinda slow. But its purpose isn’t to be the fastest, its purpose is throwing an array of 200 drives at it and trusting it to protect you even against some media degradation and random bit flips in your storage with regular scrubs.
          """
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          date: 2023-11-10 19:45:34.0 +01:00
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          "@Alawami@lemmy.world"
          "@blitzkrieg@lemm.ee"
        ]
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          date: 2023-11-10 19:45:34.0 +01:00
        }
        +"title": 108649
      }
      0 => App\Entity\EntryComment {#1619}
    ]
    -id: 11764
    -titleTs: "'background':8 'btrfs':2 'get':3 'hit':6 'huge':4 'io':9 'perf':5 'work':10"
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    +ranking: 1699715383
    +visibility: "visible             "
    +apId: "https://lemmy.world/post/8066421"
    +editedAt: null
    +createdAt: DateTimeImmutable @1699628983 {#1641
      date: 2023-11-10 16:09:43.0 +01:00
    }
    +__isInitialized__: true
     …2
  }
  +magazine: Proxies\__CG__\App\Entity\Magazine {#1550 …}
  +image: null
  +parent: Proxies\__CG__\App\Entity\EntryComment {#1604 …}
  +root: Proxies\__CG__\App\Entity\EntryComment {#1571 …}
  +body: """
    > People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)\n
    \n
    ZFS made me discover that my onboard SATA controller sucks and returns bad data occasionally under heavy load. My computer cannot complete a ZFS scrub without finding errors, every single time.\n
    \n
    Ext4, bcache and mdadm never complained about it, ever. There was never any sign that something was wrong at all.\n
    \n
    100% worth it if you care about your data. I can definitely feel the hit on my NVMe but it’s also doing so much more.
    """
  +lang: "en"
  +isAdult: false
  +favouriteCount: 3
  +score: 0
  +lastActive: DateTime @1699654740 {#1526
    date: 2023-11-10 23:19:00.0 +01:00
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  +ip: null
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    "@Alawami@lemmy.world"
    "@blitzkrieg@lemm.ee"
    "@Max_P@lemmy.max-p.me"
    "@yote_zip@pawb.social"
  ]
  +children: Doctrine\ORM\PersistentCollection {#1621 …}
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  +ranking: 0
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    date: 2023-11-10 23:19:00.0 +01:00
  }
  +"title": 109241
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
11 DENIED edit 
App\Entity\EntryComment {#1619
  +user: App\Entity\User {#263 …}
  +entry: Proxies\__CG__\App\Entity\Entry {#1551
    +user: Proxies\__CG__\App\Entity\User {#1740 …}
    +magazine: Proxies\__CG__\App\Entity\Magazine {#1550 …}
    +image: Proxies\__CG__\App\Entity\Image {#2392 …}
    +domain: Proxies\__CG__\App\Entity\Domain {#2026 …}
    +slug: "Why-btrfs-gets-huge-perf-hit-with-background-IO-work"
    +title: "Why btrfs gets huge perf hit with background IO work?"
    +url: "https://lemmy.world/pictrs/image/7ca726e4-b738-4b93-b60e-f9cee58a1be9.png"
    +body: null
    +type: "image"
    +lang: "en"
    +isOc: false
    +hasEmbed: true
    +commentCount: 36
    +favouriteCount: 118
    +score: 0
    +isAdult: false
    +sticky: false
    +lastActive: DateTime @1700047530 {#2462
      date: 2023-11-15 12:25:30.0 +01:00
    }
    +ip: null
    +adaAmount: 0
    +tags: null
    +mentions: null
    +comments: Doctrine\ORM\PersistentCollection {#2032 …}
    +votes: Doctrine\ORM\PersistentCollection {#2023 …}
    +reports: Doctrine\ORM\PersistentCollection {#1362 …}
    +favourites: Doctrine\ORM\PersistentCollection {#2085 …}
    +notifications: Doctrine\ORM\PersistentCollection {#2076 …}
    +badges: Doctrine\ORM\PersistentCollection {#2091 …}
    +children: [
      1 => App\Entity\EntryComment {#1648
        +user: App\Entity\User {#263 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1551 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1550 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1571 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1571 …}
        +body: """
          It’s mostly better, but not in every way. It has a lot of useful features, at a performance cost sometimes. A cost that historically wasn’t a problem with spinning hard drives and relatively slow SATA SSDs but will show up more on really fast NVMes.\n
          \n
          The snapshots, it has to keep track of what’s been modified. Depending on the block size, an update of just a couple bytes can end up as a few 4k write because it’s Copy-on-Write and it has to update a journal and it has to update the block list of the file. But at the same time, copying a 50GB file is instantaneous on btrfs because of the same CoW feature. Most people find the snapshots more useful than eeking out every last bit of performance out of your drive.\n
          \n
          Even ZFS, often considered to be the gold standard of filesystems, is actually kinda slow. But its purpose isn’t to be the fastest, its purpose is throwing an array of 200 drives at it and trusting it to protect you even against some media degradation and random bit flips in your storage with regular scrubs.
          """
        +lang: "en"
        +isAdult: false
        +favouriteCount: 16
        +score: 0
        +lastActive: DateTime @1699641934 {#1709
          date: 2023-11-10 19:45:34.0 +01:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Alawami@lemmy.world"
          "@blitzkrieg@lemm.ee"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1589 …}
        +nested: Doctrine\ORM\PersistentCollection {#1592 …}
        +votes: Doctrine\ORM\PersistentCollection {#1552 …}
        +reports: Doctrine\ORM\PersistentCollection {#1663 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1563 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1566 …}
        -id: 108649
        -bodyTs: "'200':174 '4k':78 '50gb':112 'actual':155 'array':172 'better':4 'bit':136,191 'block':63,100 'btrfs':117 'byte':71 'consid':146 'copi':84,110 'copy-on-writ':83 'cost':20,23 'coupl':70 'cow':122 'degrad':188 'depend':60 'drive':33,142,175 'eek':132 'end':73 'even':143,184 'everi':8,134 'fast':46 'fastest':166 'featur':16,123 'file':104,113 'filesystem':153 'find':126 'flip':192 'gold':150 'hard':32 'histor':25 'instantan':115 'isn':161 'journal':93 'keep':53 'kinda':156 'last':135 'list':101 'lot':13 'media':187 'modifi':59 'most':3 'nvmes':47 'often':145 'peopl':125 'perform':19,138 'problem':29 'protect':182 'purpos':160,168 'random':190 'realli':45 'regular':197 'relat':35 'sata':37 'scrub':198 'show':41 'size':64 'slow':36,157 'snapshot':49,128 'sometim':21 'spin':31 'ssds':38 'standard':151 'storag':195 'throw':170 'time':109 'track':54 'trust':179 'updat':66,91,98 'use':15,130 'wasn':26 'way':9 'write':79,86 'zfs':144"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.max-p.me/comment/1416904"
        +editedAt: null
        +createdAt: DateTimeImmutable @1699641934 {#1614
          date: 2023-11-10 19:45:34.0 +01:00
        }
        +"title": 108649
      }
      0 => App\Entity\EntryComment {#1619}
    ]
    -id: 11764
    -titleTs: "'background':8 'btrfs':2 'get':3 'hit':6 'huge':4 'io':9 'perf':5 'work':10"
    -bodyTs: null
    +cross: false
    +upVotes: 0
    +downVotes: 0
    +ranking: 1699715383
    +visibility: "visible             "
    +apId: "https://lemmy.world/post/8066421"
    +editedAt: null
    +createdAt: DateTimeImmutable @1699628983 {#1641
      date: 2023-11-10 16:09:43.0 +01:00
    }
    +__isInitialized__: true
     …2
  }
  +magazine: Proxies\__CG__\App\Entity\Magazine {#1550 …}
  +image: null
  +parent: Proxies\__CG__\App\Entity\EntryComment {#1604 …}
  +root: Proxies\__CG__\App\Entity\EntryComment {#1571 …}
  +body: """
    > People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)\n
    \n
    ZFS made me discover that my onboard SATA controller sucks and returns bad data occasionally under heavy load. My computer cannot complete a ZFS scrub without finding errors, every single time.\n
    \n
    Ext4, bcache and mdadm never complained about it, ever. There was never any sign that something was wrong at all.\n
    \n
    100% worth it if you care about your data. I can definitely feel the hit on my NVMe but it’s also doing so much more.
    """
  +lang: "en"
  +isAdult: false
  +favouriteCount: 3
  +score: 0
  +lastActive: DateTime @1699654740 {#1526
    date: 2023-11-10 23:19:00.0 +01:00
  }
  +ip: null
  +tags: null
  +mentions: [
    "@Alawami@lemmy.world"
    "@blitzkrieg@lemm.ee"
    "@Max_P@lemmy.max-p.me"
    "@yote_zip@pawb.social"
  ]
  +children: Doctrine\ORM\PersistentCollection {#1621 …}
  +nested: Doctrine\ORM\PersistentCollection {#1702 …}
  +votes: Doctrine\ORM\PersistentCollection {#1683 …}
  +reports: Doctrine\ORM\PersistentCollection {#1680 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1686 …}
  +notifications: Doctrine\ORM\PersistentCollection {#1692 …}
  -id: 109241
  -bodyTs: "'100':90 'also':111 'bad':28,37,51 'bcach':71 'bitrot':17,19 'btrfs':24 'cannot':59 'care':95 'checksum':29 'complain':75 'complet':60 'comput':58 'control':47 'data':52,98 'decad':8 'definit':101 'discov':42 'error':66 'ever':78 'everi':67 'exist':22 'ext4':5,12,70 'feel':102 'filesystem':38 'find':65 'heavi':55 'hit':104 'load':56 'made':40 'mdadm':73 'much':114 'never':74,81 'nvme':107 'occasion':53 'onboard':45 'peopl':1,31 'pick':25 'pretend':9 'return':50 'run':4 'sata':46 'scold':32 'scrub':63 'see':15 'sign':83 'singl':68 'someth':85 'suck':48 'system':6 'time':69 'without':64 'worth':91 'wrong':87 'zfs':39,62"
  +ranking: 0
  +commentCount: 0
  +upVotes: 0
  +downVotes: 0
  +visibility: "visible             "
  +apId: "https://lemmy.max-p.me/comment/1418570"
  +editedAt: null
  +createdAt: DateTimeImmutable @1699654740 {#1596
    date: 2023-11-10 23:19:00.0 +01:00
  }
  +"title": 109241
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
12 DENIED moderate 
App\Entity\EntryComment {#1619
  +user: App\Entity\User {#263 …}
  +entry: Proxies\__CG__\App\Entity\Entry {#1551
    +user: Proxies\__CG__\App\Entity\User {#1740 …}
    +magazine: Proxies\__CG__\App\Entity\Magazine {#1550 …}
    +image: Proxies\__CG__\App\Entity\Image {#2392 …}
    +domain: Proxies\__CG__\App\Entity\Domain {#2026 …}
    +slug: "Why-btrfs-gets-huge-perf-hit-with-background-IO-work"
    +title: "Why btrfs gets huge perf hit with background IO work?"
    +url: "https://lemmy.world/pictrs/image/7ca726e4-b738-4b93-b60e-f9cee58a1be9.png"
    +body: null
    +type: "image"
    +lang: "en"
    +isOc: false
    +hasEmbed: true
    +commentCount: 36
    +favouriteCount: 118
    +score: 0
    +isAdult: false
    +sticky: false
    +lastActive: DateTime @1700047530 {#2462
      date: 2023-11-15 12:25:30.0 +01:00
    }
    +ip: null
    +adaAmount: 0
    +tags: null
    +mentions: null
    +comments: Doctrine\ORM\PersistentCollection {#2032 …}
    +votes: Doctrine\ORM\PersistentCollection {#2023 …}
    +reports: Doctrine\ORM\PersistentCollection {#1362 …}
    +favourites: Doctrine\ORM\PersistentCollection {#2085 …}
    +notifications: Doctrine\ORM\PersistentCollection {#2076 …}
    +badges: Doctrine\ORM\PersistentCollection {#2091 …}
    +children: [
      1 => App\Entity\EntryComment {#1648
        +user: App\Entity\User {#263 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1551 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1550 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1571 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1571 …}
        +body: """
          It’s mostly better, but not in every way. It has a lot of useful features, at a performance cost sometimes. A cost that historically wasn’t a problem with spinning hard drives and relatively slow SATA SSDs but will show up more on really fast NVMes.\n
          \n
          The snapshots, it has to keep track of what’s been modified. Depending on the block size, an update of just a couple bytes can end up as a few 4k write because it’s Copy-on-Write and it has to update a journal and it has to update the block list of the file. But at the same time, copying a 50GB file is instantaneous on btrfs because of the same CoW feature. Most people find the snapshots more useful than eeking out every last bit of performance out of your drive.\n
          \n
          Even ZFS, often considered to be the gold standard of filesystems, is actually kinda slow. But its purpose isn’t to be the fastest, its purpose is throwing an array of 200 drives at it and trusting it to protect you even against some media degradation and random bit flips in your storage with regular scrubs.
          """
        +lang: "en"
        +isAdult: false
        +favouriteCount: 16
        +score: 0
        +lastActive: DateTime @1699641934 {#1709
          date: 2023-11-10 19:45:34.0 +01:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Alawami@lemmy.world"
          "@blitzkrieg@lemm.ee"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1589 …}
        +nested: Doctrine\ORM\PersistentCollection {#1592 …}
        +votes: Doctrine\ORM\PersistentCollection {#1552 …}
        +reports: Doctrine\ORM\PersistentCollection {#1663 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1563 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1566 …}
        -id: 108649
        -bodyTs: "'200':174 '4k':78 '50gb':112 'actual':155 'array':172 'better':4 'bit':136,191 'block':63,100 'btrfs':117 'byte':71 'consid':146 'copi':84,110 'copy-on-writ':83 'cost':20,23 'coupl':70 'cow':122 'degrad':188 'depend':60 'drive':33,142,175 'eek':132 'end':73 'even':143,184 'everi':8,134 'fast':46 'fastest':166 'featur':16,123 'file':104,113 'filesystem':153 'find':126 'flip':192 'gold':150 'hard':32 'histor':25 'instantan':115 'isn':161 'journal':93 'keep':53 'kinda':156 'last':135 'list':101 'lot':13 'media':187 'modifi':59 'most':3 'nvmes':47 'often':145 'peopl':125 'perform':19,138 'problem':29 'protect':182 'purpos':160,168 'random':190 'realli':45 'regular':197 'relat':35 'sata':37 'scrub':198 'show':41 'size':64 'slow':36,157 'snapshot':49,128 'sometim':21 'spin':31 'ssds':38 'standard':151 'storag':195 'throw':170 'time':109 'track':54 'trust':179 'updat':66,91,98 'use':15,130 'wasn':26 'way':9 'write':79,86 'zfs':144"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.max-p.me/comment/1416904"
        +editedAt: null
        +createdAt: DateTimeImmutable @1699641934 {#1614
          date: 2023-11-10 19:45:34.0 +01:00
        }
        +"title": 108649
      }
      0 => App\Entity\EntryComment {#1619}
    ]
    -id: 11764
    -titleTs: "'background':8 'btrfs':2 'get':3 'hit':6 'huge':4 'io':9 'perf':5 'work':10"
    -bodyTs: null
    +cross: false
    +upVotes: 0
    +downVotes: 0
    +ranking: 1699715383
    +visibility: "visible             "
    +apId: "https://lemmy.world/post/8066421"
    +editedAt: null
    +createdAt: DateTimeImmutable @1699628983 {#1641
      date: 2023-11-10 16:09:43.0 +01:00
    }
    +__isInitialized__: true
     …2
  }
  +magazine: Proxies\__CG__\App\Entity\Magazine {#1550 …}
  +image: null
  +parent: Proxies\__CG__\App\Entity\EntryComment {#1604 …}
  +root: Proxies\__CG__\App\Entity\EntryComment {#1571 …}
  +body: """
    > People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)\n
    \n
    ZFS made me discover that my onboard SATA controller sucks and returns bad data occasionally under heavy load. My computer cannot complete a ZFS scrub without finding errors, every single time.\n
    \n
    Ext4, bcache and mdadm never complained about it, ever. There was never any sign that something was wrong at all.\n
    \n
    100% worth it if you care about your data. I can definitely feel the hit on my NVMe but it’s also doing so much more.
    """
  +lang: "en"
  +isAdult: false
  +favouriteCount: 3
  +score: 0
  +lastActive: DateTime @1699654740 {#1526
    date: 2023-11-10 23:19:00.0 +01:00
  }
  +ip: null
  +tags: null
  +mentions: [
    "@Alawami@lemmy.world"
    "@blitzkrieg@lemm.ee"
    "@Max_P@lemmy.max-p.me"
    "@yote_zip@pawb.social"
  ]
  +children: Doctrine\ORM\PersistentCollection {#1621 …}
  +nested: Doctrine\ORM\PersistentCollection {#1702 …}
  +votes: Doctrine\ORM\PersistentCollection {#1683 …}
  +reports: Doctrine\ORM\PersistentCollection {#1680 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1686 …}
  +notifications: Doctrine\ORM\PersistentCollection {#1692 …}
  -id: 109241
  -bodyTs: "'100':90 'also':111 'bad':28,37,51 'bcach':71 'bitrot':17,19 'btrfs':24 'cannot':59 'care':95 'checksum':29 'complain':75 'complet':60 'comput':58 'control':47 'data':52,98 'decad':8 'definit':101 'discov':42 'error':66 'ever':78 'everi':67 'exist':22 'ext4':5,12,70 'feel':102 'filesystem':38 'find':65 'heavi':55 'hit':104 'load':56 'made':40 'mdadm':73 'much':114 'never':74,81 'nvme':107 'occasion':53 'onboard':45 'peopl':1,31 'pick':25 'pretend':9 'return':50 'run':4 'sata':46 'scold':32 'scrub':63 'see':15 'sign':83 'singl':68 'someth':85 'suck':48 'system':6 'time':69 'without':64 'worth':91 'wrong':87 'zfs':39,62"
  +ranking: 0
  +commentCount: 0
  +upVotes: 0
  +downVotes: 0
  +visibility: "visible             "
  +apId: "https://lemmy.max-p.me/comment/1418570"
  +editedAt: null
  +createdAt: DateTimeImmutable @1699654740 {#1596
    date: 2023-11-10 23:19:00.0 +01:00
  }
  +"title": 109241
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
13 DENIED ROLE_ADMIN 
null
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"Symfony\Component\Security\Core\Authorization\Voter\RoleHierarchyVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
14 DENIED ROLE_MODERATOR 
null
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"Symfony\Component\Security\Core\Authorization\Voter\RoleHierarchyVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details