[Bug 1829409] Re: xfsdump doesn't allow levels beyond 0-9

[Kai-Heng Feng]

** Also affects: xfsdump (Ubuntu)
   Importance: Undecided
       Status: New

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Title:
  xfsdump doesn't allow levels beyond 0-9

Status in linux package in Ubuntu:
  Incomplete
Status in xfsdump package in Ubuntu:
  New

Bug description:
  Hi!

  I've found, quite surprised, that xfsdump doesn't allow dump level
  numbers outside of the range [0-9].  Given that even storing that
  number requires a full byte (8 bits), it boggles the mind why more
  numbers aren't supported.  The usefulness of supporting more numbers
  (24? even 255...) is for taking hourly delta snapshots of live
  filesystems using xfsdump as a backup measure.

  With a simple script one can write a backup that takes a full dump
  (level 0) of the filesystem for the first backup of a given date, and
  all other backups during that day are incrementals (levels are > 0 ...
  i.e. the hour of the day the backup is taken).  However, given that
  the tool only supports [0-9] as the backup level, this seems like an
  arbitrary limitation.

  Is there a real, technical limitation that this level is adhering to?

  Cheers!
  --- 
  ProblemType: Bug
  ApportVersion: 2.20.10-0ubuntu27
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  gdm        3277 F.... pulseaudio
                        diego      3916 F.... pulseaudio
   /dev/snd/pcmC0D0p:   diego      3916 F...m pulseaudio
   /dev/snd/controlC1:  gdm        3277 F.... pulseaudio
  DistroRelease: Ubuntu 19.04
  InstallationDate: Installed on 2019-04-20 (26 days ago)
  InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
  MachineType: ASUS All Series
  NonfreeKernelModules: nvidia_modeset nvidia
  Package: linux (not installed)
  ProcFB: 0 EFI VGA
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.0.0-13-generic root=UUID=1e9e8db1-15c8-4369-b27b-1a797cfe8561 ro quiet splash ipv6.disable=1 crashkernel=512M-:192M vt.handoff=1
  ProcVersionSignature: Ubuntu 5.0.0-13.14-generic 5.0.6
  PulseList:
   Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied
   No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-5.0.0-13-generic N/A
   linux-backports-modules-5.0.0-13-generic  N/A
   linux-firmware                            1.178.1
  RfKill:
   3: hci0: Bluetooth
   	Soft blocked: no
   	Hard blocked: no
  Tags:  disco
  Uname: Linux 5.0.0-13-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  _MarkForUpload: True
  dmi.bios.date: 09/15/2017
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 3801
  dmi.board.asset.tag: Default string
  dmi.board.name: RAMPAGE V EXTREME
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: Rev 1.xx
  dmi.chassis.asset.tag: Default string
  dmi.chassis.type: 3
  dmi.chassis.vendor: Default string
  dmi.chassis.version: Default string
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr3801:bd09/15/2017:svnASUS:pnAllSeries:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnRAMPAGEVEXTREME:rvrRev1.xx:cvnDefaultstring:ct3:cvrDefaultstring:
  dmi.product.family: ASUS MB
  dmi.product.name: All Series
  dmi.product.sku: All
  dmi.product.version: System Version
  dmi.sys.vendor: ASUS

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