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[Roger Binns <ubuntu@xxxxxxxxxxxxxx>]

The mailing list eventually went nowhere, including someone helping me
out privately.  He seemed to think it was a udev issue, which was highly
amusing as the udev (and systemd) binaries were running from the very
devices they believed weren't ready yet.

Here is the final scorecard.  I have 3 systems, all using btrfs with
raid0 across two devices.  Both root and home are separate subvolumes on
that.

System 1 (workstation - above report): systemd brings the system up but
times out waiting to mount home.  Setting /home to nofail in fstab and
then running mount -a from a console works just fine.  This is the only
system where the two drives are identical - they are exactly the same
SSD models and firmware versions on the same controller.  (Note system
fails to boot if they are on different controllers which wasn't a
problem with earlier Ubuntu versions.)  Booting with upstart works fine
and is how I have now configured the system.

System 2 (laptop):  the two devices are wrapped in LUKS+dmcrypt.  They
are decrypted at boot and then there is a pause, and then finally
everything comes up.  Most of the time that pause is 3 minutes, but
sometimes is a few seconds.  Again no problems in earlier Ubuntu
releases.

System 3 (server): Like system 1, it is bare devices but in this case
they are about the same capacity but from different vendors.  Everything
works perfectly, and if anything boots a bit faster than earlier Ubuntu
releases.

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to systemd in Ubuntu.
https://bugs.launchpad.net/bugs/1447879

Title:
  fscking btrfs consisting of multiple partitions fails

Status in systemd package in Ubuntu:
  New

Bug description:
  I have two SSDs in raid0 (striped) configuration with my root and home
  as separate subvolumes.  This setup has worked fine for several Ubuntu
  releases, but fails with systemd on 15.04.  systemd does manage to
  mount root, but then looks like it is trying to fsck the "disk" for
  home which is nonsensical.  After 90 seconds it drops into a useless
  shell where I can't fix things.

  Relevant lines from /etc/fstab

  UUID=3ff68715-0daa-4e44-8de2-0997f36d8ab6 /               btrfs   defaults,device=/dev/disk/by-id/ata-Crucial_CT960M500SSD1_1347095B97B4-part1,device=/dev/disk/by-id/ata-Crucial_CT960M500SSD1_1338094EA3CA-part1,autodefrag,compress=lzo,subvol=@ 0       1
  UUID=3ff68715-0daa-4e44-8de2-0997f36d8ab6 /home           btrfs   defaults,device=/dev/disk/by-id/ata-Crucial_CT960M500SSD1_1347095B97B4-part1,device=/dev/disk/by-id/ata-Crucial_CT960M500SSD1_1338094EA3CA-part1,autodefrag,compress=lzo,subvol=@home 0       2

  
  Note how the lines are identical except for the subvol value.  I originally didn't have the device= bits either but had to add it for root because of how `btrfs device scan` is run.  With or without it present doesn't make any difference for home.

  There is no such problem booting with upstart

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: systemd 219-7ubuntu3
  ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
  Uname: Linux 3.19.0-15-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Thu Apr 23 19:45:38 2015
  MachineType: System manufacturer System Product Name
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-15-generic root=UUID=3ff68715-0daa-4e44-8de2-0997f36d8ab6 ro rootflags=subvol=@ nomdmonddf nomdmonisw init=/sbin/upstart
  SourcePackage: systemd
  SystemdDelta:
   [EXTENDED]   /lib/systemd/system/systemd-timesyncd.service → /lib/systemd/system/systemd-timesyncd.service.d/disable-with-time-daemon.conf
   
   1 overridden configuration files found.
  UpgradeStatus: Upgraded to vivid on 2015-04-23 (0 days ago)
  dmi.bios.date: 08/13/2013
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 2104
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: P8Z77-V PRO
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: Rev 1.xx
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2104:bd08/13/2013:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnP8Z77-VPRO:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer

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