touch-packages team mailing list archive

Thread
Date
[Bug 1490088] [NEW] 15.10: pvs/pvscan/pvdisplay not recognising PV metadata created by 14.04

To: touch-packages@xxxxxxxxxxxxxxxxxxx
From: TJ <ubuntu@xxxxxx>
Date: Sat, 29 Aug 2015 04:15:19 -0000
Reply-to: Bug 1490088 <1490088@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Public bug reported:

Working on a 14.04 amd64 host with a 15.10 chroot I found that several
PV tools cannot recognise PVs created on 14.04.

As a test on 14.04 I created 2 test loop device files and used pvcreate
on them (loop0 has zero metadata copies).

## In 14.04:

$ sudo losetup -vf /var/lib/schroot/metadata-test.bin
Loop device is /dev/loop0
$ sudo losetup -vf /var/lib/schroot/metadata-test-2.bin
Loop device is /dev/loop1
$ sudo losetup -a
/dev/loop0: [fc17]:2612 (/var/lib/schroot/metadata-test.bin)
/dev/loop1: [fc17]:2613 (/var/lib/schroot/metadata-test-2.bin)
$ file -s /dev/loop[0-1]
/dev/loop0: LVM2 PV (Linux Logical Volume Manager), UUID: t304eP-t7dr-z52W-7Agt-nEdB-Kv7G-3dNObh, size: 1073741824
/dev/loop1: LVM2 PV (Linux Logical Volume Manager), UUID: 6194QF-wn0J-69C4-WCVc-rFxw-XwXJ-3fMXXb, size: 524288000
$ blkid /dev/loop[0-1]
/dev/loop0: UUID="t304eP-t7dr-z52W-7Agt-nEdB-Kv7G-3dNObh" TYPE="LVM2_member"
/dev/loop1: UUID="6194QF-wn0J-69C4-WCVc-rFxw-XwXJ-3fMXXb" TYPE="LVM2_member"
$ sudo pvck /dev/loop[0-1]
  Found label on /dev/loop0, sector 0, type=LVM2 001
  Found label on /dev/loop1, sector 1, type=LVM2 001
  Found text metadata area: offset=4096, size=1044480

$ sudo pvs /dev/loop[0-1]
  PV         VG   Fmt  Attr PSize    PFree
  /dev/loop0 Test lvm2 a--  1020.00m 1020.00m
  /dev/loop1 Test lvm2 a--   496.00m  496.00m

## In 15.10

# file -s /dev/loop[0-1]
/dev/loop0: LVM2 PV (Linux Logical Volume Manager), UUID: t304eP-t7dr-z52W-7Agt-nEdB-Kv7G-3dNObh, size: 1073741824
/dev/loop1: LVM2 PV (Linux Logical Volume Manager), UUID: 6194QF-wn0J-69C4-WCVc-rFxw-XwXJ-3fMXXb, size: 524288000
# blkid /dev/loop[0-1]
/dev/loop0: UUID="t304eP-t7dr-z52W-7Agt-nEdB-Kv7G-3dNObh" TYPE="LVM2_member"
/dev/loop1: UUID="6194QF-wn0J-69C4-WCVc-rFxw-XwXJ-3fMXXb" TYPE="LVM2_member"
# pvck /dev/loop[0-1]
  Found label on /dev/loop0, sector 0, type=LVM2 001
  Found label on /dev/loop1, sector 1, type=LVM2 001
  Found text metadata area: offset=4096, size=1044480

# pvs /dev/loop[0-1]
  Failed to find physical volume "/dev/loop0".
  Failed to find physical volume "/dev/loop1".

## In the 15.10 chroot I created another loop device file and used
pvcreate on it.

# losetup -vf /var/lib/schroot/metadata-test-3.bin
# losetup -a
/dev/loop0: [64535]:2612 (/var/lib/schroot/metadata-test.bin)
/dev/loop1: [64535]:2613 (/var/lib/schroot/metadata-test-2.bin)
/dev/loop2: [64535]:1056349 (/var/lib/schroot/metadata-test-3.bin)
# file -s /dev/loop2
/dev/loop2: LVM2 PV (Linux Logical Volume Manager), UUID: 7auwAs-qqGs-MZ0c-ns74-jdlh-kGOS-s8kJjE, size: 629145600
# blkid /dev/loop2
/dev/loop2: UUID="7auwAs-qqGs-MZ0c-ns74-jdlh-kGOS-s8kJjE" TYPE="LVM2_member"
# pvck /dev/loop2
  Found label on /dev/loop2, sector 1, type=LVM2 001
  Found text metadata area: offset=4096, size=1044480
# pvs /dev/loop2
  PV         VG   Fmt  Attr PSize   PFree
  /dev/loop2      lvm2 ---  600.00m 600.00m

## In the 14.04 host

$ sudo losetup -a
/dev/loop0: [fc17]:2612 (/var/lib/schroot/metadata-test.bin)
/dev/loop1: [fc17]:2613 (/var/lib/schroot/metadata-test-2.bin)
/dev/loop2: [fc17]:1056349 (/var/lib/schroot/metadata-test-3.bin)
$ file -s /dev/loop2
/dev/loop2: LVM2 PV (Linux Logical Volume Manager), UUID: 7auwAs-qqGs-MZ0c-ns74-jdlh-kGOS-s8kJjE, size: 629145600
$ blkid /dev/loop2
/dev/loop2: UUID="7auwAs-qqGs-MZ0c-ns74-jdlh-kGOS-s8kJjE" TYPE="LVM2_member"
$ sudo pvck /dev/loop2
  Found label on /dev/loop2, sector 1, type=LVM2 001
  Found text metadata area: offset=4096, size=1044480
$ sudo pvs /dev/loop2
  PV         VG   Fmt  Attr PSize   PFree
  /dev/loop2      lvm2 a--  600.00m 600.00m


## 14.04
apt-cache policy lvm2
lvm2:
  Installed: 2.02.98-6ubuntu2
  Candidate: 2.02.98-6ubuntu2
  Version table:
 *** 2.02.98-6ubuntu2 0
        500 http://gb.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
        100 /var/lib/dpkg/status

## 15.10
# apt-cache policy lvm2
lvm2:
  Installed: 2.02.122-1ubuntu1
  Candidate: 2.02.122-1ubuntu1
  Version table:
 *** 2.02.122-1ubuntu1 0
        500 http://archive.ubuntu.com/ubuntu/ wily/main amd64 Packages
        100 /var/lib/dpkg/status

** Affects: lvm2 (Ubuntu)
     Importance: Undecided
         Status: New

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to lvm2 in Ubuntu.
https://bugs.launchpad.net/bugs/1490088

Title:
  15.10: pvs/pvscan/pvdisplay not recognising PV metadata created by
  14.04

Status in lvm2 package in Ubuntu:
  New

Bug description:
  Working on a 14.04 amd64 host with a 15.10 chroot I found that several
  PV tools cannot recognise PVs created on 14.04.

  As a test on 14.04 I created 2 test loop device files and used
  pvcreate on them (loop0 has zero metadata copies).

  ## In 14.04:

  $ sudo losetup -vf /var/lib/schroot/metadata-test.bin
  Loop device is /dev/loop0
  $ sudo losetup -vf /var/lib/schroot/metadata-test-2.bin
  Loop device is /dev/loop1
  $ sudo losetup -a
  /dev/loop0: [fc17]:2612 (/var/lib/schroot/metadata-test.bin)
  /dev/loop1: [fc17]:2613 (/var/lib/schroot/metadata-test-2.bin)
  $ file -s /dev/loop[0-1]
  /dev/loop0: LVM2 PV (Linux Logical Volume Manager), UUID: t304eP-t7dr-z52W-7Agt-nEdB-Kv7G-3dNObh, size: 1073741824
  /dev/loop1: LVM2 PV (Linux Logical Volume Manager), UUID: 6194QF-wn0J-69C4-WCVc-rFxw-XwXJ-3fMXXb, size: 524288000
  $ blkid /dev/loop[0-1]
  /dev/loop0: UUID="t304eP-t7dr-z52W-7Agt-nEdB-Kv7G-3dNObh" TYPE="LVM2_member"
  /dev/loop1: UUID="6194QF-wn0J-69C4-WCVc-rFxw-XwXJ-3fMXXb" TYPE="LVM2_member"
  $ sudo pvck /dev/loop[0-1]
    Found label on /dev/loop0, sector 0, type=LVM2 001
    Found label on /dev/loop1, sector 1, type=LVM2 001
    Found text metadata area: offset=4096, size=1044480

  $ sudo pvs /dev/loop[0-1]
    PV         VG   Fmt  Attr PSize    PFree
    /dev/loop0 Test lvm2 a--  1020.00m 1020.00m
    /dev/loop1 Test lvm2 a--   496.00m  496.00m

  ## In 15.10

  # file -s /dev/loop[0-1]
  /dev/loop0: LVM2 PV (Linux Logical Volume Manager), UUID: t304eP-t7dr-z52W-7Agt-nEdB-Kv7G-3dNObh, size: 1073741824
  /dev/loop1: LVM2 PV (Linux Logical Volume Manager), UUID: 6194QF-wn0J-69C4-WCVc-rFxw-XwXJ-3fMXXb, size: 524288000
  # blkid /dev/loop[0-1]
  /dev/loop0: UUID="t304eP-t7dr-z52W-7Agt-nEdB-Kv7G-3dNObh" TYPE="LVM2_member"
  /dev/loop1: UUID="6194QF-wn0J-69C4-WCVc-rFxw-XwXJ-3fMXXb" TYPE="LVM2_member"
  # pvck /dev/loop[0-1]
    Found label on /dev/loop0, sector 0, type=LVM2 001
    Found label on /dev/loop1, sector 1, type=LVM2 001
    Found text metadata area: offset=4096, size=1044480

  # pvs /dev/loop[0-1]
    Failed to find physical volume "/dev/loop0".
    Failed to find physical volume "/dev/loop1".

  ## In the 15.10 chroot I created another loop device file and used
  pvcreate on it.

  # losetup -vf /var/lib/schroot/metadata-test-3.bin
  # losetup -a
  /dev/loop0: [64535]:2612 (/var/lib/schroot/metadata-test.bin)
  /dev/loop1: [64535]:2613 (/var/lib/schroot/metadata-test-2.bin)
  /dev/loop2: [64535]:1056349 (/var/lib/schroot/metadata-test-3.bin)
  # file -s /dev/loop2
  /dev/loop2: LVM2 PV (Linux Logical Volume Manager), UUID: 7auwAs-qqGs-MZ0c-ns74-jdlh-kGOS-s8kJjE, size: 629145600
  # blkid /dev/loop2
  /dev/loop2: UUID="7auwAs-qqGs-MZ0c-ns74-jdlh-kGOS-s8kJjE" TYPE="LVM2_member"
  # pvck /dev/loop2
    Found label on /dev/loop2, sector 1, type=LVM2 001
    Found text metadata area: offset=4096, size=1044480
  # pvs /dev/loop2
    PV         VG   Fmt  Attr PSize   PFree
    /dev/loop2      lvm2 ---  600.00m 600.00m

  ## In the 14.04 host

  $ sudo losetup -a
  /dev/loop0: [fc17]:2612 (/var/lib/schroot/metadata-test.bin)
  /dev/loop1: [fc17]:2613 (/var/lib/schroot/metadata-test-2.bin)
  /dev/loop2: [fc17]:1056349 (/var/lib/schroot/metadata-test-3.bin)
  $ file -s /dev/loop2
  /dev/loop2: LVM2 PV (Linux Logical Volume Manager), UUID: 7auwAs-qqGs-MZ0c-ns74-jdlh-kGOS-s8kJjE, size: 629145600
  $ blkid /dev/loop2
  /dev/loop2: UUID="7auwAs-qqGs-MZ0c-ns74-jdlh-kGOS-s8kJjE" TYPE="LVM2_member"
  $ sudo pvck /dev/loop2
    Found label on /dev/loop2, sector 1, type=LVM2 001
    Found text metadata area: offset=4096, size=1044480
  $ sudo pvs /dev/loop2
    PV         VG   Fmt  Attr PSize   PFree
    /dev/loop2      lvm2 a--  600.00m 600.00m

  
  ## 14.04
  apt-cache policy lvm2
  lvm2:
    Installed: 2.02.98-6ubuntu2
    Candidate: 2.02.98-6ubuntu2
    Version table:
   *** 2.02.98-6ubuntu2 0
          500 http://gb.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
          100 /var/lib/dpkg/status

  ## 15.10
  # apt-cache policy lvm2
  lvm2:
    Installed: 2.02.122-1ubuntu1
    Candidate: 2.02.122-1ubuntu1
    Version table:
   *** 2.02.122-1ubuntu1 0
          500 http://archive.ubuntu.com/ubuntu/ wily/main amd64 Packages
          100 /var/lib/dpkg/status

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/lvm2/+bug/1490088/+subscriptions
Follow ups

[Bug 1490088] Re: 15.10: pvs/pvscan/pvdisplay not recognising PV metadata when lvmetad is running
From: TJ, 2015-08-29
[Bug 1490088] Re: 15.10: pvs/pvscan/pvdisplay not recognising PV metadata when lvmetad is running
From: TJ, 2015-08-29
[Bug 1490088] Re: 15.10: pvs/pvscan/pvdisplay not recognising PV metadata when lvmetad is running
From: TJ, 2015-08-29