[Bug 1880869] Re: Use persistent device name for vdevs

[Jean-Baptiste Lallement]

** Description changed:

  [Impact]
  
   * ZFS pools were created with device names such as /dev/sdX,
  /dev/vdX,... However, these names are not stable and may change on each
  reboot, leading to an unbootable system.
  
-  * "zpool create" now uses persistent device names with PARTUUID
+  * "zpool create" now uses persistent device names with PARTUUID
  instead.
  
  [Test Case]
  
-  * detailed instructions how to reproduce the bug
+  * After a fresh installation run the following command:
+ $ zpool status -P 
+ Verify that the device is something like /dev/disk/by-partuuid/<some id>
+ 
+ $ zpool status -PL
+ Verify that the device is something like /dev/[s,v,h]dX and corresponds to the device selected during installation.
+ 
  
  [Regression Potential]
  
   * Likely low risk of regression. Worst case system doesn't boot after a
  fresh installation which is better than today because the system may
  boot but subsequent boots may not.
  
  [Other Info]
  
-  * Already shipped in GRoovy
+  * Already shipped in Groovy
  
  [Original Bug report]
  
  ZFS pools are currently created with device names such as /dev/sdX, /dev/vdX,... However, this name is not stable and may change on each reboot.
  "zpool create" must use persistent device names like UUID or PARTUUID instead.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 20.10
  Package: ubiquity (not installed)
  ProcVersionSignature: Ubuntu 5.4.0-18.22-generic 5.4.24
  Uname: Linux 5.4.0-18-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu36
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Wed May 27 13:52:13 2020
  InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash -- keyboard-configuration/layoutcode=fr keyboard-configuration/variantcode=oss
  InstallationDate: Installed on 2014-07-15 (2143 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Alpha amd64 (20140520)
  SourcePackage: ubiquity
  UpgradeStatus: Upgraded to groovy on 2018-03-24 (794 days ago)

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https://bugs.launchpad.net/bugs/1880869

Title:
  Use persistent device name for vdevs

Status in ubiquity:
  Unknown
Status in ubiquity package in Ubuntu:
  Fix Released
Status in ubiquity source package in Focal:
  Triaged

Bug description:
  [Impact]

   * ZFS pools were created with device names such as /dev/sdX,
  /dev/vdX,... However, these names are not stable and may change on
  each reboot, leading to an unbootable system.

   * "zpool create" now uses persistent device names with PARTUUID
  instead.

  [Test Case]

   * After a fresh installation run the following command:
  $ zpool status -P 
  Verify that the device is something like /dev/disk/by-partuuid/<some id>

  $ zpool status -PL
  Verify that the device is something like /dev/[s,v,h]dX and corresponds to the device selected during installation.

  
  [Regression Potential]

   * Likely low risk of regression. Worst case system doesn't boot after
  a fresh installation which is better than today because the system may
  boot but subsequent boots may not.

  [Other Info]

   * Already shipped in Groovy

  [Original Bug report]

  ZFS pools are currently created with device names such as /dev/sdX, /dev/vdX,... However, this name is not stable and may change on each reboot.
  "zpool create" must use persistent device names like UUID or PARTUUID instead.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.10
  Package: ubiquity (not installed)
  ProcVersionSignature: Ubuntu 5.4.0-18.22-generic 5.4.24
  Uname: Linux 5.4.0-18-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu36
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Wed May 27 13:52:13 2020
  InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash -- keyboard-configuration/layoutcode=fr keyboard-configuration/variantcode=oss
  InstallationDate: Installed on 2014-07-15 (2143 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Alpha amd64 (20140520)
  SourcePackage: ubiquity
  UpgradeStatus: Upgraded to groovy on 2018-03-24 (794 days ago)

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