GET https://kbin.spritesserver.nl/index.php/m/linux@lemmy.ml/t/18292/Automatic-backups-of-inode-tables-and-partition-info-for-easier/active

Response
200 OK
IP
216.73.216.122
Profiled on
Token
c5df55

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 …}
}
 17.88 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 …}
}
 0.08 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 
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    +icon: Proxies\__CG__\App\Entity\Image {#246 …}
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    +title: "linux"
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      From Wikipedia, the free encyclopedia\n
      \n
      Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
      \n
      Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
      \n
      ### Rules\n
      \n
      - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
      - No misinformation\n
      - No NSFW content\n
      - No hate speech, bigotry, etc\n
      \n
      ### Related Communities\n
      \n
      - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
      - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
      - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
      - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
      \n
      Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
      """
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    +apDiscoverable: true
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    +privateKey: null
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    +apFetchedAt: DateTime @1729583596 {#269
      date: 2024-10-22 09:53:16.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1698929468 {#271
      date: 2023-11-02 13:51:08.0 +01:00
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  +image: null
  +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
  +slug: "Automatic-backups-of-inode-tables-and-partition-info-for-easier"
  +title: "Automatic backups of inode tables and partition info for easier data recovery"
  +url: null
  +body: """
    Good morning all, in today’s episode of “What I learned during work hours”…\n
    \n
    I was playing around with wxHexEditor and realised that if something catastrophic happened, I would really struggle with any data recovery if I lost the inode tables for any drive.\n
    \n
    A quick duckle pointed me to e2image, which says in the man:\n
    \n
    > It is a very good idea to create image files for all file systems on a system and save the partition layout (which can be generated using the fdisk -l command) at regular intervals — at boot time, and/or every week or so.\n
    \n
    I couldn’t find any prebuilt solutions for this online, so I wrote a systemd service and timer to do this for me. I save the fdisk to a text file, run e2image on a couple drives, and compress it all together in a dated 7z that can get uploaded via rsync or Mega or Dropbox etc.\n
    \n
    The metadata image from a 500gb drive is 8gb, but compresses down to 40mb. Backup takes a couple minutes.\n
    \n
    Unfortunately this does *not* work with my raid drives, but they are RAID1 so already resilient.\n
    \n
    Apparently I was being a derp somehow. …Anyways,\n
    \n
    My RAID drives are 16TB, e2image of this is 125gb, and 7z’d it comes down to just 63mb.\n
    \n
    I’ll post the service, timer, and backup script in a comment, let me know if you can spot anywhere for improvements!
    """
  +type: "article"
  +lang: "en"
  +isOc: false
  +hasEmbed: false
  +commentCount: 16
  +favouriteCount: 25
  +score: 0
  +isAdult: false
  +sticky: false
  +lastActive: DateTime @1701340910 {#2414
    date: 2023-11-30 11:41:50.0 +01:00
  }
  +ip: null
  +adaAmount: 0
  +tags: null
  +mentions: null
  +comments: Doctrine\ORM\PersistentCollection {#1688 …}
  +votes: Doctrine\ORM\PersistentCollection {#1966 …}
  +reports: Doctrine\ORM\PersistentCollection {#1965 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1368 …}
  +notifications: Doctrine\ORM\PersistentCollection {#2426 …}
  +badges: Doctrine\ORM\PersistentCollection {#2439 …}
  +children: []
  -id: 18292
  -titleTs: "'automat':1 'backup':2 'data':11 'easier':10 'info':8 'inod':4 'partit':7 'recoveri':12 'tabl':5"
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  +downVotes: 0
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  +editedAt: DateTimeImmutable @1702307273 {#1793
    date: 2023-12-11 16:07:53.0 +01:00
  }
  +createdAt: DateTimeImmutable @1701288584 {#2402
    date: 2023-11-29 21:09:44.0 +01:00
  }
}
 
"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 
App\Entity\Entry {#2400
  +user: Proxies\__CG__\App\Entity\User {#1978 …}
  +magazine: App\Entity\Magazine {#265
    +icon: Proxies\__CG__\App\Entity\Image {#246 …}
    +name: "linux@lemmy.ml"
    +title: "linux"
    +description: """
      From Wikipedia, the free encyclopedia\n
      \n
      Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
      \n
      Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
      \n
      ### Rules\n
      \n
      - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
      - No misinformation\n
      - No NSFW content\n
      - No hate speech, bigotry, etc\n
      \n
      ### Related Communities\n
      \n
      - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
      - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
      - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
      - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
      \n
      Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
      """
    +rules: null
    +subscriptionsCount: 1
    +entryCount: 1406
    +entryCommentCount: 28632
    +postCount: 6
    +postCommentCount: 214
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      date: 2024-10-22 09:52:22.0 +02:00
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    +reports: Doctrine\ORM\PersistentCollection {#103 …}
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    +apDiscoverable: true
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    +apFetchedAt: DateTime @1729583596 {#269
      date: 2024-10-22 09:53:16.0 +02:00
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    +apDeletedAt: null
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    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1698929468 {#271
      date: 2023-11-02 13:51:08.0 +01:00
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  +image: null
  +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
  +slug: "Automatic-backups-of-inode-tables-and-partition-info-for-easier"
  +title: "Automatic backups of inode tables and partition info for easier data recovery"
  +url: null
  +body: """
    Good morning all, in today’s episode of “What I learned during work hours”…\n
    \n
    I was playing around with wxHexEditor and realised that if something catastrophic happened, I would really struggle with any data recovery if I lost the inode tables for any drive.\n
    \n
    A quick duckle pointed me to e2image, which says in the man:\n
    \n
    > It is a very good idea to create image files for all file systems on a system and save the partition layout (which can be generated using the fdisk -l command) at regular intervals — at boot time, and/or every week or so.\n
    \n
    I couldn’t find any prebuilt solutions for this online, so I wrote a systemd service and timer to do this for me. I save the fdisk to a text file, run e2image on a couple drives, and compress it all together in a dated 7z that can get uploaded via rsync or Mega or Dropbox etc.\n
    \n
    The metadata image from a 500gb drive is 8gb, but compresses down to 40mb. Backup takes a couple minutes.\n
    \n
    Unfortunately this does *not* work with my raid drives, but they are RAID1 so already resilient.\n
    \n
    Apparently I was being a derp somehow. …Anyways,\n
    \n
    My RAID drives are 16TB, e2image of this is 125gb, and 7z’d it comes down to just 63mb.\n
    \n
    I’ll post the service, timer, and backup script in a comment, let me know if you can spot anywhere for improvements!
    """
  +type: "article"
  +lang: "en"
  +isOc: false
  +hasEmbed: false
  +commentCount: 16
  +favouriteCount: 25
  +score: 0
  +isAdult: false
  +sticky: false
  +lastActive: DateTime @1701340910 {#2414
    date: 2023-11-30 11:41:50.0 +01:00
  }
  +ip: null
  +adaAmount: 0
  +tags: null
  +mentions: null
  +comments: Doctrine\ORM\PersistentCollection {#1688 …}
  +votes: Doctrine\ORM\PersistentCollection {#1966 …}
  +reports: Doctrine\ORM\PersistentCollection {#1965 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1368 …}
  +notifications: Doctrine\ORM\PersistentCollection {#2426 …}
  +badges: Doctrine\ORM\PersistentCollection {#2439 …}
  +children: []
  -id: 18292
  -titleTs: "'automat':1 'backup':2 'data':11 'easier':10 'info':8 'inod':4 'partit':7 'recoveri':12 'tabl':5"
  -bodyTs: "'125gb':208 '16tb':203 '40mb':169 '500gb':161 '63mb':217 '7z':144,210 '8gb':164 'alreadi':189 'and/or':94 'anyway':198 'anywher':237 'appar':191 'around':18 'backup':170,225 'boot':92 'catastroph':26 'come':213 'command':87 'comment':229 'compress':137,166 'couldn':100 'coupl':134,173 'creat':64 'd':211 'data':34 'date':143 'derp':196 'drive':44,135,162,183,201 'dropbox':154 'duckl':47 'e2image':51,131,204 'episod':7 'etc':155 'everi':95 'fdisk':85,125 'file':66,69,129 'find':102 'generat':82 'get':147 'good':1,61 'happen':27 'hour':14 'idea':62 'imag':65,158 'improv':239 'inod':40 'interv':90 'know':232 'l':86 'layout':78 'learn':11 'let':230 'll':219 'lost':38 'man':56 'mega':152 'metadata':157 'minut':174 'morn':2 'onlin':108 'partit':77 'play':17 'point':48 'post':220 'prebuilt':104 'quick':46 'raid':182,200 'raid1':187 'realis':22 'realli':30 'recoveri':35 'regular':89 'resili':190 'rsync':150 'run':130 'save':75,123 'say':53 'script':226 'servic':114,222 'solut':105 'somehow':197 'someth':25 'spot':236 'struggl':31 'system':70,73 'systemd':113 'tabl':41 'take':171 'text':128 'time':93 'timer':116,223 'today':5 'togeth':140 'unfortun':175 'upload':148 'use':83 'via':149 'week':96 'work':13,179 'would':29 'wrote':111 'wxhexeditor':20"
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  +apId: "https://lemmy.nz/post/3898548"
  +editedAt: DateTimeImmutable @1702307273 {#1793
    date: 2023-12-11 16:07:53.0 +01:00
  }
  +createdAt: DateTimeImmutable @1701288584 {#2402
    date: 2023-11-29 21:09:44.0 +01:00
  }
}
 
"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 
App\Entity\Entry {#2400
  +user: Proxies\__CG__\App\Entity\User {#1978 …}
  +magazine: App\Entity\Magazine {#265
    +icon: Proxies\__CG__\App\Entity\Image {#246 …}
    +name: "linux@lemmy.ml"
    +title: "linux"
    +description: """
      From Wikipedia, the free encyclopedia\n
      \n
      Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
      \n
      Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
      \n
      ### Rules\n
      \n
      - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
      - No misinformation\n
      - No NSFW content\n
      - No hate speech, bigotry, etc\n
      \n
      ### Related Communities\n
      \n
      - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
      - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
      - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
      - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
      \n
      Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
      """
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    Good morning all, in today’s episode of “What I learned during work hours”…\n
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    """
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      Good morning all, in today’s episode of “What I learned during work hours”…\n
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      I was playing around with wxHexEditor and realised that if something catastrophic happened, I would really struggle with any data recovery if I lost the inode tables for any drive.\n
      \n
      A quick duckle pointed me to e2image, which says in the man:\n
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      \n
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      \n
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      """
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      Good morning all, in today’s episode of “What I learned during work hours”…\n
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      \n
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      Good morning all, in today’s episode of “What I learned during work hours”…\n
      \n
      I was playing around with wxHexEditor and realised that if something catastrophic happened, I would really struggle with any data recovery if I lost the inode tables for any drive.\n
      \n
      A quick duckle pointed me to e2image, which says in the man:\n
      \n
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      \n
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      """
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      Good morning all, in today’s episode of “What I learned during work hours”…\n
      \n
      I was playing around with wxHexEditor and realised that if something catastrophic happened, I would really struggle with any data recovery if I lost the inode tables for any drive.\n
      \n
      A quick duckle pointed me to e2image, which says in the man:\n
      \n
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      \n
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      \n
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      \n
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      \n
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      \n
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      \n
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      """
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    May I point out that all a RAID1 does is sync the blocks between two drives. It won’t protect against writing something dumb that would mess up the filesystem, it will just dutifully sync it.\n
    \n
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      Good morning all, in today’s episode of “What I learned during work hours”…\n
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      \n
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    May I point out that all a RAID1 does is sync the blocks between two drives. It won’t protect against writing something dumb that would mess up the filesystem, it will just dutifully sync it.\n
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        - No misinformation\n
        - No NSFW content\n
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        \n
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        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
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        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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      Good morning all, in today’s episode of “What I learned during work hours”…\n
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      \n
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      \n
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      \n
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      \n
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      \n
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      \n
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    May I point out that all a RAID1 does is sync the blocks between two drives. It won’t protect against writing something dumb that would mess up the filesystem, it will just dutifully sync it.\n
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    You *should* be able to back up ext data from a filesystem on a RAID array, unless I’m confused about what e2image actually does. Are you trying to use it on the underlying drive devices by any chance? You have to point it at the RAID device on top of them, something like /dev/md1 rather than /dev/sda1.\n
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        \n
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      Good morning all, in today’s episode of “What I learned during work hours”…\n
      \n
      I was playing around with wxHexEditor and realised that if something catastrophic happened, I would really struggle with any data recovery if I lost the inode tables for any drive.\n
      \n
      A quick duckle pointed me to e2image, which says in the man:\n
      \n
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      \n
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      \n
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      \n
      I’ll post the service, timer, and backup script in a comment, let me know if you can spot anywhere for improvements!
      """
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    > e2image\n
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    There’s a good reason for the 2 in the name.\n
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        - No misinformation\n
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        - No hate speech, bigotry, etc\n
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        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
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        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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      Good morning all, in today’s episode of “What I learned during work hours”…\n
      \n
      I was playing around with wxHexEditor and realised that if something catastrophic happened, I would really struggle with any data recovery if I lost the inode tables for any drive.\n
      \n
      A quick duckle pointed me to e2image, which says in the man:\n
      \n
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      \n
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      \n
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      \n
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      \n
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      \n
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      \n
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      """
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    > e2image\n
    \n
    There’s a good reason for the 2 in the name.\n
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        \n
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        \n
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        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
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      Good morning all, in today’s episode of “What I learned during work hours”…\n
      \n
      I was playing around with wxHexEditor and realised that if something catastrophic happened, I would really struggle with any data recovery if I lost the inode tables for any drive.\n
      \n
      A quick duckle pointed me to e2image, which says in the man:\n
      \n
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      \n
      I couldn’t find any prebuilt solutions for this online, so I wrote a systemd service and timer to do this for me. I save the fdisk to a text file, run e2image on a couple drives, and compress it all together in a dated 7z that can get uploaded via rsync or Mega or Dropbox etc.\n
      \n
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      \n
      Unfortunately this does *not* work with my raid drives, but they are RAID1 so already resilient.\n
      \n
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      \n
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      """
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    > e2image\n
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    There’s a good reason for the 2 in the name.\n
    \n
    Today we have ext4, and ZFS of course.
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        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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      Good morning all, in today’s episode of “What I learned during work hours”…\n
      \n
      I was playing around with wxHexEditor and realised that if something catastrophic happened, I would really struggle with any data recovery if I lost the inode tables for any drive.\n
      \n
      A quick duckle pointed me to e2image, which says in the man:\n
      \n
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      \n
      I couldn’t find any prebuilt solutions for this online, so I wrote a systemd service and timer to do this for me. I save the fdisk to a text file, run e2image on a couple drives, and compress it all together in a dated 7z that can get uploaded via rsync or Mega or Dropbox etc.\n
      \n
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      \n
      Unfortunately this does *not* work with my raid drives, but they are RAID1 so already resilient.\n
      \n
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      \n
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      \n
      I’ll post the service, timer, and backup script in a comment, let me know if you can spot anywhere for improvements!
      """
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        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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      Good morning all, in today’s episode of “What I learned during work hours”…\n
      \n
      I was playing around with wxHexEditor and realised that if something catastrophic happened, I would really struggle with any data recovery if I lost the inode tables for any drive.\n
      \n
      A quick duckle pointed me to e2image, which says in the man:\n
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      \n
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      \n
      Unfortunately this does *not* work with my raid drives, but they are RAID1 so already resilient.\n
      \n
      Apparently I was being a derp somehow. …Anyways,\n
      \n
      My RAID drives are 16TB, e2image of this is 125gb, and 7z’d it comes down to just 63mb.\n
      \n
      I’ll post the service, timer, and backup script in a comment, let me know if you can spot anywhere for improvements!
      """
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      Good morning all, in today’s episode of “What I learned during work hours”…\n
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      Good morning all, in today’s episode of “What I learned during work hours”…\n
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      \n
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    -bodyTs: "'125gb':208 '16tb':203 '40mb':169 '500gb':161 '63mb':217 '7z':144,210 '8gb':164 'alreadi':189 'and/or':94 'anyway':198 'anywher':237 'appar':191 'around':18 'backup':170,225 'boot':92 'catastroph':26 'come':213 'command':87 'comment':229 'compress':137,166 'couldn':100 'coupl':134,173 'creat':64 'd':211 'data':34 'date':143 'derp':196 'drive':44,135,162,183,201 'dropbox':154 'duckl':47 'e2image':51,131,204 'episod':7 'etc':155 'everi':95 'fdisk':85,125 'file':66,69,129 'find':102 'generat':82 'get':147 'good':1,61 'happen':27 'hour':14 'idea':62 'imag':65,158 'improv':239 'inod':40 'interv':90 'know':232 'l':86 'layout':78 'learn':11 'let':230 'll':219 'lost':38 'man':56 'mega':152 'metadata':157 'minut':174 'morn':2 'onlin':108 'partit':77 'play':17 'point':48 'post':220 'prebuilt':104 'quick':46 'raid':182,200 'raid1':187 'realis':22 'realli':30 'recoveri':35 'regular':89 'resili':190 'rsync':150 'run':130 'save':75,123 'say':53 'script':226 'servic':114,222 'solut':105 'somehow':197 'someth':25 'spot':236 'struggl':31 'system':70,73 'systemd':113 'tabl':41 'take':171 'text':128 'time':93 'timer':116,223 'today':5 'togeth':140 'unfortun':175 'upload':148 'use':83 'via':149 'week':96 'work':13,179 'would':29 'wrote':111 'wxhexeditor':20"
    +cross: false
    +upVotes: 0
    +downVotes: 0
    +ranking: 1701374984
    +visibility: "visible             "
    +apId: "https://lemmy.nz/post/3898548"
    +editedAt: DateTimeImmutable @1702307273 {#1793
      date: 2023-12-11 16:07:53.0 +01:00
    }
    +createdAt: DateTimeImmutable @1701288584 {#2402
      date: 2023-11-29 21:09:44.0 +01:00
    }
  }
  +magazine: App\Entity\Magazine {#265}
  +image: null
  +parent: null
  +root: null
  +body: """
    `The script takes the drives as arguments:`\n
    \n
    ```\n
    \n
    <span style="color:#323232;">$ pwd\n
    </span><span style="color:#323232;">/usr/lib/systemd/system\n
    </span><span style="color:#323232;">$ cat drive_backup.service \n
    </span><span style="color:#323232;">[Unit]\n
    </span><span style="color:#323232;">Description=backup fdisk + e2image\n
    </span><span style="color:#323232;">Wants=drive_backup.timer\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">[Service]\n
    </span><span style="color:#323232;">Type=oneshot\n
    </span><span style="color:#323232;">ExecStart=/usr/bin/backup_meta_data.sh /dev/sdc1 /dev/sdb1\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">[Install]\n
    </span><span style="color:#323232;">WantedBy=multi-user.target\n
    </span>\n
    ```\n
    \n
    `Set to run at 3:40am every day, but probably could be once weekly really.`\n
    \n
    ```\n
    \n
    <span style="color:#323232;">$ cat drive_backup.timer \n
    </span><span style="color:#323232;">[Unit]\n
    </span><span style="color:#323232;">Description=timer to run drive backup\n
    </span><span style="color:#323232;">Requires=drive_backup.service\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">[Timer]\n
    </span><span style="color:#323232;">Unit=drive_backup.service\n
    </span><span style="color:#323232;">OnCalendar=*-*-* 03:40:00\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">[Install]\n
    </span><span style="color:#323232;">WantedBy=timers.target\n
    </span>\n
    ```\n
    \n
    `Should be fairly self-explanatory. `\n
    \n
    ```\n
    \n
    <span style="color:#323232;">$ cat /usr/bin/backup_meta_data.sh\n
    </span><span style="color:#323232;">#!/bin/bash\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">working_dir=/home/st/drive_recovery/working\n
    </span><span style="color:#323232;">backup_dir=/home/st/drive_recovery\n
    </span><span style="color:#323232;">backup_date=$(date +%Y%m%d-%H%M)\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">mkdir -p $working_dir\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">sudo fdisk -x > $working_dir/$backup_date.fdisk\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">for var in "$@"\n
    </span><span style="color:#323232;">do\n
    </span><span style="color:#323232;">\tclean=$(echo $var | sed 's;/;-;g')\n
    </span><span style="color:#323232;">\tsudo e2image $var $working_dir/$backup_date.$clean\n
    </span><span style="color:#323232;">done\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">sudo 7z a $backup_dir/$backup_date.archive $working_dir/"$backup_date"*\n
    </span><span style="color:#323232;">sudo rm $working_dir/"$backup_date"*\n
    </span>\n
    ```
    """
  +lang: "en"
  +isAdult: false
  +favouriteCount: 2
  +score: 0
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    date: 2023-11-29 21:14:36.0 +01:00
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    "323232"
  ]
  +mentions: [
    "@luthis@lemmy.nz"
  ]
  +children: Doctrine\ORM\PersistentCollection {#4382 …}
  +nested: Doctrine\ORM\PersistentCollection {#4384 …}
  +votes: Doctrine\ORM\PersistentCollection {#4386 …}
  +reports: Doctrine\ORM\PersistentCollection {#4388 …}
  +favourites: Doctrine\ORM\PersistentCollection {#4390 …}
  +notifications: Doctrine\ORM\PersistentCollection {#4392 …}
  -id: 178058
  -bodyTs: "'/bin/bash':73 '/dev/sdb1':25 '/dev/sdc1':24 '/home/st/drive_recovery':79 '/home/st/drive_recovery/working':76 '/usr/bin/backup_meta_data.sh':23,72 '/usr/lib/systemd/system':9 '00':61 '03':59 '3':33 '40':60 '40am':34 '7z':118 'argument':7 'backup':14,52,77,80,113,120,125,131 'backup_date.archive':122 'backup_date.fdisk':97 'cat':10,44,71 'clean':102,115 'could':39 'd':85 'date':81,82,114,126,132 'day':36 'descript':13,47 'dir':75,78,91,96,112,121,124,130 'done':116 'drive':5,51 'drive_backup.service':11,54,57 'drive_backup.timer':18,45 'e2image':16,109 'echo':103 'everi':35 'execstart':22 'explanatori':70 'fair':67 'fdisk':15,93 'g':107 'h':86 'instal':26,62 'm':84,87 'mkdir':88 'multi-user.target':28 'oncalendar':58 'oneshot':21 'p':89 'probabl':38 'pwd':8 'realli':43 'requir':53 'rm':128 'run':31,50 'script':2 'sed':105 'self':69 'self-explanatori':68 'servic':19 'set':29 'sudo':92,108,117,127 'take':3 'timer':48,55 'timers.target':64 'type':20 'unit':12,46,56 'var':99,104,110 'want':17 'wantedbi':27,63 'week':42 'work':74,90,95,111,123,129 'x':94 'y':83"
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  +visibility: "visible             "
  +apId: "https://lemmy.nz/comment/4098853"
  +editedAt: DateTimeImmutable @1702210211 {#4376
    date: 2023-12-10 13:10:11.0 +01:00
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    date: 2023-11-29 21:14:36.0 +01:00
  }
}
 
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Show voter details
23 DENIED edit 
App\Entity\EntryComment {#4381
  +user: Proxies\__CG__\App\Entity\User {#1978 …}
  +entry: App\Entity\Entry {#2400
    +user: Proxies\__CG__\App\Entity\User {#1978 …}
    +magazine: App\Entity\Magazine {#265
      +icon: Proxies\__CG__\App\Entity\Image {#246 …}
      +name: "linux@lemmy.ml"
      +title: "linux"
      +description: """
        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
      +rules: null
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      +entryCommentCount: 28632
      +postCount: 6
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        date: 2024-10-22 09:52:22.0 +02:00
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      +markedForDeletionAt: null
      +tags: null
      +moderators: Doctrine\ORM\PersistentCollection {#237 …}
      +ownershipRequests: Doctrine\ORM\PersistentCollection {#233 …}
      +moderatorRequests: Doctrine\ORM\PersistentCollection {#222 …}
      +entries: Doctrine\ORM\PersistentCollection {#180 …}
      +posts: Doctrine\ORM\PersistentCollection {#138 …}
      +subscriptions: Doctrine\ORM\PersistentCollection {#200 …}
      +bans: Doctrine\ORM\PersistentCollection {#117 …}
      +reports: Doctrine\ORM\PersistentCollection {#103 …}
      +badges: Doctrine\ORM\PersistentCollection {#81 …}
      +logs: Doctrine\ORM\PersistentCollection {#71 …}
      +awards: Doctrine\ORM\PersistentCollection {#1346 …}
      +categories: Doctrine\ORM\PersistentCollection {#1823 …}
      -id: 73
      +apId: "linux@lemmy.ml"
      +apProfileId: "https://lemmy.ml/c/linux"
      +apPublicUrl: "https://lemmy.ml/c/linux"
      +apFollowersUrl: "https://lemmy.ml/c/linux/followers"
      +apInboxUrl: "https://lemmy.ml/inbox"
      +apDomain: "lemmy.ml"
      +apPreferredUsername: "linux"
      +apDiscoverable: true
      +apManuallyApprovesFollowers: null
      +privateKey: null
      +publicKey: null
      +apFetchedAt: DateTime @1729583596 {#269
        date: 2024-10-22 09:53:16.0 +02:00
      }
      +apDeletedAt: null
      +apTimeoutAt: null
      +visibility: "visible             "
      +createdAt: DateTimeImmutable @1698929468 {#271
        date: 2023-11-02 13:51:08.0 +01:00
      }
    }
    +image: null
    +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
    +slug: "Automatic-backups-of-inode-tables-and-partition-info-for-easier"
    +title: "Automatic backups of inode tables and partition info for easier data recovery"
    +url: null
    +body: """
      Good morning all, in today’s episode of “What I learned during work hours”…\n
      \n
      I was playing around with wxHexEditor and realised that if something catastrophic happened, I would really struggle with any data recovery if I lost the inode tables for any drive.\n
      \n
      A quick duckle pointed me to e2image, which says in the man:\n
      \n
      > It is a very good idea to create image files for all file systems on a system and save the partition layout (which can be generated using the fdisk -l command) at regular intervals — at boot time, and/or every week or so.\n
      \n
      I couldn’t find any prebuilt solutions for this online, so I wrote a systemd service and timer to do this for me. I save the fdisk to a text file, run e2image on a couple drives, and compress it all together in a dated 7z that can get uploaded via rsync or Mega or Dropbox etc.\n
      \n
      The metadata image from a 500gb drive is 8gb, but compresses down to 40mb. Backup takes a couple minutes.\n
      \n
      Unfortunately this does *not* work with my raid drives, but they are RAID1 so already resilient.\n
      \n
      Apparently I was being a derp somehow. …Anyways,\n
      \n
      My RAID drives are 16TB, e2image of this is 125gb, and 7z’d it comes down to just 63mb.\n
      \n
      I’ll post the service, timer, and backup script in a comment, let me know if you can spot anywhere for improvements!
      """
    +type: "article"
    +lang: "en"
    +isOc: false
    +hasEmbed: false
    +commentCount: 16
    +favouriteCount: 25
    +score: 0
    +isAdult: false
    +sticky: false
    +lastActive: DateTime @1701340910 {#2414
      date: 2023-11-30 11:41:50.0 +01:00
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    +ip: null
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    +comments: Doctrine\ORM\PersistentCollection {#1688 …}
    +votes: Doctrine\ORM\PersistentCollection {#1966 …}
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    +favourites: Doctrine\ORM\PersistentCollection {#1368 …}
    +notifications: Doctrine\ORM\PersistentCollection {#2426 …}
    +badges: Doctrine\ORM\PersistentCollection {#2439 …}
    +children: []
    -id: 18292
    -titleTs: "'automat':1 'backup':2 'data':11 'easier':10 'info':8 'inod':4 'partit':7 'recoveri':12 'tabl':5"
    -bodyTs: "'125gb':208 '16tb':203 '40mb':169 '500gb':161 '63mb':217 '7z':144,210 '8gb':164 'alreadi':189 'and/or':94 'anyway':198 'anywher':237 'appar':191 'around':18 'backup':170,225 'boot':92 'catastroph':26 'come':213 'command':87 'comment':229 'compress':137,166 'couldn':100 'coupl':134,173 'creat':64 'd':211 'data':34 'date':143 'derp':196 'drive':44,135,162,183,201 'dropbox':154 'duckl':47 'e2image':51,131,204 'episod':7 'etc':155 'everi':95 'fdisk':85,125 'file':66,69,129 'find':102 'generat':82 'get':147 'good':1,61 'happen':27 'hour':14 'idea':62 'imag':65,158 'improv':239 'inod':40 'interv':90 'know':232 'l':86 'layout':78 'learn':11 'let':230 'll':219 'lost':38 'man':56 'mega':152 'metadata':157 'minut':174 'morn':2 'onlin':108 'partit':77 'play':17 'point':48 'post':220 'prebuilt':104 'quick':46 'raid':182,200 'raid1':187 'realis':22 'realli':30 'recoveri':35 'regular':89 'resili':190 'rsync':150 'run':130 'save':75,123 'say':53 'script':226 'servic':114,222 'solut':105 'somehow':197 'someth':25 'spot':236 'struggl':31 'system':70,73 'systemd':113 'tabl':41 'take':171 'text':128 'time':93 'timer':116,223 'today':5 'togeth':140 'unfortun':175 'upload':148 'use':83 'via':149 'week':96 'work':13,179 'would':29 'wrote':111 'wxhexeditor':20"
    +cross: false
    +upVotes: 0
    +downVotes: 0
    +ranking: 1701374984
    +visibility: "visible             "
    +apId: "https://lemmy.nz/post/3898548"
    +editedAt: DateTimeImmutable @1702307273 {#1793
      date: 2023-12-11 16:07:53.0 +01:00
    }
    +createdAt: DateTimeImmutable @1701288584 {#2402
      date: 2023-11-29 21:09:44.0 +01:00
    }
  }
  +magazine: App\Entity\Magazine {#265}
  +image: null
  +parent: null
  +root: null
  +body: """
    `The script takes the drives as arguments:`\n
    \n
    ```\n
    \n
    <span style="color:#323232;">$ pwd\n
    </span><span style="color:#323232;">/usr/lib/systemd/system\n
    </span><span style="color:#323232;">$ cat drive_backup.service \n
    </span><span style="color:#323232;">[Unit]\n
    </span><span style="color:#323232;">Description=backup fdisk + e2image\n
    </span><span style="color:#323232;">Wants=drive_backup.timer\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">[Service]\n
    </span><span style="color:#323232;">Type=oneshot\n
    </span><span style="color:#323232;">ExecStart=/usr/bin/backup_meta_data.sh /dev/sdc1 /dev/sdb1\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">[Install]\n
    </span><span style="color:#323232;">WantedBy=multi-user.target\n
    </span>\n
    ```\n
    \n
    `Set to run at 3:40am every day, but probably could be once weekly really.`\n
    \n
    ```\n
    \n
    <span style="color:#323232;">$ cat drive_backup.timer \n
    </span><span style="color:#323232;">[Unit]\n
    </span><span style="color:#323232;">Description=timer to run drive backup\n
    </span><span style="color:#323232;">Requires=drive_backup.service\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">[Timer]\n
    </span><span style="color:#323232;">Unit=drive_backup.service\n
    </span><span style="color:#323232;">OnCalendar=*-*-* 03:40:00\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">[Install]\n
    </span><span style="color:#323232;">WantedBy=timers.target\n
    </span>\n
    ```\n
    \n
    `Should be fairly self-explanatory. `\n
    \n
    ```\n
    \n
    <span style="color:#323232;">$ cat /usr/bin/backup_meta_data.sh\n
    </span><span style="color:#323232;">#!/bin/bash\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">working_dir=/home/st/drive_recovery/working\n
    </span><span style="color:#323232;">backup_dir=/home/st/drive_recovery\n
    </span><span style="color:#323232;">backup_date=$(date +%Y%m%d-%H%M)\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">mkdir -p $working_dir\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">sudo fdisk -x > $working_dir/$backup_date.fdisk\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">for var in "$@"\n
    </span><span style="color:#323232;">do\n
    </span><span style="color:#323232;">\tclean=$(echo $var | sed 's;/;-;g')\n
    </span><span style="color:#323232;">\tsudo e2image $var $working_dir/$backup_date.$clean\n
    </span><span style="color:#323232;">done\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">sudo 7z a $backup_dir/$backup_date.archive $working_dir/"$backup_date"*\n
    </span><span style="color:#323232;">sudo rm $working_dir/"$backup_date"*\n
    </span>\n
    ```
    """
  +lang: "en"
  +isAdult: false
  +favouriteCount: 2
  +score: 0
  +lastActive: DateTime @1701288876 {#4375
    date: 2023-11-29 21:14:36.0 +01:00
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  +ip: null
  +tags: [
    "323232"
  ]
  +mentions: [
    "@luthis@lemmy.nz"
  ]
  +children: Doctrine\ORM\PersistentCollection {#4382 …}
  +nested: Doctrine\ORM\PersistentCollection {#4384 …}
  +votes: Doctrine\ORM\PersistentCollection {#4386 …}
  +reports: Doctrine\ORM\PersistentCollection {#4388 …}
  +favourites: Doctrine\ORM\PersistentCollection {#4390 …}
  +notifications: Doctrine\ORM\PersistentCollection {#4392 …}
  -id: 178058
  -bodyTs: "'/bin/bash':73 '/dev/sdb1':25 '/dev/sdc1':24 '/home/st/drive_recovery':79 '/home/st/drive_recovery/working':76 '/usr/bin/backup_meta_data.sh':23,72 '/usr/lib/systemd/system':9 '00':61 '03':59 '3':33 '40':60 '40am':34 '7z':118 'argument':7 'backup':14,52,77,80,113,120,125,131 'backup_date.archive':122 'backup_date.fdisk':97 'cat':10,44,71 'clean':102,115 'could':39 'd':85 'date':81,82,114,126,132 'day':36 'descript':13,47 'dir':75,78,91,96,112,121,124,130 'done':116 'drive':5,51 'drive_backup.service':11,54,57 'drive_backup.timer':18,45 'e2image':16,109 'echo':103 'everi':35 'execstart':22 'explanatori':70 'fair':67 'fdisk':15,93 'g':107 'h':86 'instal':26,62 'm':84,87 'mkdir':88 'multi-user.target':28 'oncalendar':58 'oneshot':21 'p':89 'probabl':38 'pwd':8 'realli':43 'requir':53 'rm':128 'run':31,50 'script':2 'sed':105 'self':69 'self-explanatori':68 'servic':19 'set':29 'sudo':92,108,117,127 'take':3 'timer':48,55 'timers.target':64 'type':20 'unit':12,46,56 'var':99,104,110 'want':17 'wantedbi':27,63 'week':42 'work':74,90,95,111,123,129 'x':94 'y':83"
  +ranking: 0
  +commentCount: 0
  +upVotes: 0
  +downVotes: 0
  +visibility: "visible             "
  +apId: "https://lemmy.nz/comment/4098853"
  +editedAt: DateTimeImmutable @1702210211 {#4376
    date: 2023-12-10 13:10:11.0 +01:00
  }
  +createdAt: DateTimeImmutable @1701288876 {#4377
    date: 2023-11-29 21:14:36.0 +01:00
  }
}
 
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 ACCESS ABSTAIN 
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24 DENIED moderate 
App\Entity\EntryComment {#4381
  +user: Proxies\__CG__\App\Entity\User {#1978 …}
  +entry: App\Entity\Entry {#2400
    +user: Proxies\__CG__\App\Entity\User {#1978 …}
    +magazine: App\Entity\Magazine {#265
      +icon: Proxies\__CG__\App\Entity\Image {#246 …}
      +name: "linux@lemmy.ml"
      +title: "linux"
      +description: """
        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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        date: 2023-11-02 13:51:08.0 +01:00
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    +image: null
    +domain: Proxies\__CG__\App\Entity\Domain {#1889 …}
    +slug: "Automatic-backups-of-inode-tables-and-partition-info-for-easier"
    +title: "Automatic backups of inode tables and partition info for easier data recovery"
    +url: null
    +body: """
      Good morning all, in today’s episode of “What I learned during work hours”…\n
      \n
      I was playing around with wxHexEditor and realised that if something catastrophic happened, I would really struggle with any data recovery if I lost the inode tables for any drive.\n
      \n
      A quick duckle pointed me to e2image, which says in the man:\n
      \n
      > It is a very good idea to create image files for all file systems on a system and save the partition layout (which can be generated using the fdisk -l command) at regular intervals — at boot time, and/or every week or so.\n
      \n
      I couldn’t find any prebuilt solutions for this online, so I wrote a systemd service and timer to do this for me. I save the fdisk to a text file, run e2image on a couple drives, and compress it all together in a dated 7z that can get uploaded via rsync or Mega or Dropbox etc.\n
      \n
      The metadata image from a 500gb drive is 8gb, but compresses down to 40mb. Backup takes a couple minutes.\n
      \n
      Unfortunately this does *not* work with my raid drives, but they are RAID1 so already resilient.\n
      \n
      Apparently I was being a derp somehow. …Anyways,\n
      \n
      My RAID drives are 16TB, e2image of this is 125gb, and 7z’d it comes down to just 63mb.\n
      \n
      I’ll post the service, timer, and backup script in a comment, let me know if you can spot anywhere for improvements!
      """
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    +downVotes: 0
    +ranking: 1701374984
    +visibility: "visible             "
    +apId: "https://lemmy.nz/post/3898548"
    +editedAt: DateTimeImmutable @1702307273 {#1793
      date: 2023-12-11 16:07:53.0 +01:00
    }
    +createdAt: DateTimeImmutable @1701288584 {#2402
      date: 2023-11-29 21:09:44.0 +01:00
    }
  }
  +magazine: App\Entity\Magazine {#265}
  +image: null
  +parent: null
  +root: null
  +body: """
    `The script takes the drives as arguments:`\n
    \n
    ```\n
    \n
    <span style="color:#323232;">$ pwd\n
    </span><span style="color:#323232;">/usr/lib/systemd/system\n
    </span><span style="color:#323232;">$ cat drive_backup.service \n
    </span><span style="color:#323232;">[Unit]\n
    </span><span style="color:#323232;">Description=backup fdisk + e2image\n
    </span><span style="color:#323232;">Wants=drive_backup.timer\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">[Service]\n
    </span><span style="color:#323232;">Type=oneshot\n
    </span><span style="color:#323232;">ExecStart=/usr/bin/backup_meta_data.sh /dev/sdc1 /dev/sdb1\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">[Install]\n
    </span><span style="color:#323232;">WantedBy=multi-user.target\n
    </span>\n
    ```\n
    \n
    `Set to run at 3:40am every day, but probably could be once weekly really.`\n
    \n
    ```\n
    \n
    <span style="color:#323232;">$ cat drive_backup.timer \n
    </span><span style="color:#323232;">[Unit]\n
    </span><span style="color:#323232;">Description=timer to run drive backup\n
    </span><span style="color:#323232;">Requires=drive_backup.service\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">[Timer]\n
    </span><span style="color:#323232;">Unit=drive_backup.service\n
    </span><span style="color:#323232;">OnCalendar=*-*-* 03:40:00\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">[Install]\n
    </span><span style="color:#323232;">WantedBy=timers.target\n
    </span>\n
    ```\n
    \n
    `Should be fairly self-explanatory. `\n
    \n
    ```\n
    \n
    <span style="color:#323232;">$ cat /usr/bin/backup_meta_data.sh\n
    </span><span style="color:#323232;">#!/bin/bash\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">working_dir=/home/st/drive_recovery/working\n
    </span><span style="color:#323232;">backup_dir=/home/st/drive_recovery\n
    </span><span style="color:#323232;">backup_date=$(date +%Y%m%d-%H%M)\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">mkdir -p $working_dir\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">sudo fdisk -x > $working_dir/$backup_date.fdisk\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">for var in "$@"\n
    </span><span style="color:#323232;">do\n
    </span><span style="color:#323232;">\tclean=$(echo $var | sed 's;/;-;g')\n
    </span><span style="color:#323232;">\tsudo e2image $var $working_dir/$backup_date.$clean\n
    </span><span style="color:#323232;">done\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">sudo 7z a $backup_dir/$backup_date.archive $working_dir/"$backup_date"*\n
    </span><span style="color:#323232;">sudo rm $working_dir/"$backup_date"*\n
    </span>\n
    ```
    """
  +lang: "en"
  +isAdult: false
  +favouriteCount: 2
  +score: 0
  +lastActive: DateTime @1701288876 {#4375
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  +tags: [
    "323232"
  ]
  +mentions: [
    "@luthis@lemmy.nz"
  ]
  +children: Doctrine\ORM\PersistentCollection {#4382 …}
  +nested: Doctrine\ORM\PersistentCollection {#4384 …}
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  +editedAt: DateTimeImmutable @1702210211 {#4376
    date: 2023-12-10 13:10:11.0 +01:00
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    date: 2023-11-29 21:14:36.0 +01:00
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}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
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"App\Security\Voter\MagazineVoter"
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 ACCESS ABSTAIN 
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 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
25 DENIED edit 
App\Entity\Magazine {#265
  +icon: Proxies\__CG__\App\Entity\Image {#246 …}
  +name: "linux@lemmy.ml"
  +title: "linux"
  +description: """
    From Wikipedia, the free encyclopedia\n
    \n
    Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
    \n
    Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
    \n
    ### Rules\n
    \n
    - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
    - No misinformation\n
    - No NSFW content\n
    - No hate speech, bigotry, etc\n
    \n
    ### Related Communities\n
    \n
    - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
    - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
    - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
    - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
    \n
    Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
    """
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"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS DENIED 
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 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"
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Show voter details