Problem with file level restore from delta backup from LVM parition

olivierlambert

badrAZ or someone else of XO team will try to reproduce the issue. They are under heavy lot for a bunch of new exciting features, so it might take time to test.

badrAZ

Hi,

After testing a file restore on a LVM partition, i don't got the issue.

lukas othmar I need please the output of lvscan. Thank you

lukas

lvscan
  ACTIVE            '/dev/ftp/ftp' [100.00 GiB] inherit

Mounted as ext4

/dev/mapper/ftp-ftp on /home/ftp type ext4 (rw,relatime,data=ordered)

System is debian 8.11

othmar

badrAZ

lvscan
  ACTIVE            '/dev/ubuntu-vg/ubuntu-lv' [4,00 GiB] inherit
  ACTIVE            '/dev/mysqldata/mysqldata' [<120,00 GiB] inherit

pvscan
  PV /dev/xvda3   VG ubuntu-vg       lvm2 [<19,00 GiB / <15,00 GiB free]
  PV /dev/loop2   VG mysqldata       lvm2 [<120,00 GiB / 0    free]
  Total: 2 [138,99 GiB] / in use: 2 [138,99 GiB] / in no VG: 0 [0   ]

fdisk -l
Disk /dev/loop0: 89,1 MiB, 93417472 bytes, 182456 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk /dev/loop1: 88,5 MiB, 92778496 bytes, 181208 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk /dev/loop2: 120 GiB, 128849018880 bytes, 251658240 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk /dev/xvda: 20 GiB, 21474836480 bytes, 41943040 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 4EBCD4D4-BC5A-4F08-971C-AFB438AC5912

Device       Start      End  Sectors Size Type
/dev/xvda1    2048     4095     2048   1M BIOS boot
/dev/xvda2    4096  2101247  2097152   1G Linux filesystem
/dev/xvda3 2101248 41940991 39839744  19G Linux filesystem

Disk /dev/mapper/ubuntu--vg-ubuntu--lv: 4 GiB, 4294967296 bytes, 8388608 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk /dev/mapper/mysqldata-mysqldata: 120 GiB, 128844824576 bytes, 251650048 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

sudo lsblk --output NAME,FSTYPE,LABEL,UUID,MODE
NAME                      FSTYPE      LABEL UUID                                   MODE
loop0                     squashfs                                                 brw-rw----
loop1                     squashfs                                                 brw-rw----
loop2                     LVM2_member       lBivVu-YQOo-du2R-8DvU-3Igy-Kbk6-7MLtZU brw-rw----
└─mysqldata-mysqldata     xfs               c0875768-6bc8-49e5-85e9-fed64b469344   brw-rw----
sr0                                                                                brw-rw----
xvda                                                                               brw-rw----
├─xvda1                                                                            brw-rw----
├─xvda2                   ext4              e79dd49b-ed47-41b0-9b8a-720875dbdaf0   brw-rw----
└─xvda3                   LVM2_member       qNEetu-q1qF-AO2t-Eufa-OuoK-9Cy4-hjAstI brw-rw----
  └─ubuntu--vg-ubuntu--lv ext4              c1b5b0fa-42d1-494a-b2d0-4125c579a660   brw-rw----

2020-01-24 13_36_35-Backup.png
2020-01-24 13_37_23-Backup.png

badrAZ

I tested this functionality on ext4 and xfs and it works for me.

Unfortunately, i need to reproduce this issue in our lab to be able to investigate more.

olivierlambert

Same problem with XOA othmar ?

othmar

olivierlambert

I did not have a XOA i have the xo-server 5.54.0 community edition on ubunto server.

Danp

othmar Install XOA in trial mode and then retest to see if the issue is present with it.

othmar

Danp
yes it's the same on XOA in trial mode latest patched.

lukas

It's same here. Problem is in community version and in xoa trial.

olivierlambert

There's obviously something different between the VMs you use and ours for tests. Would you be able to provide a VM export so we can deploy it on our side, backup it and see why file restore doesn't work?

shadowdao

I am seeing the same issue with LVM restores. Exists between Trial and Community editions.

backupNg.listFiles
{
  "remote": "c6f2b11a-4065-4a8b-b75f-e16bf2aeb5f5",
  "disk": "xo-vm-backups/8a0d70df-9659-b307-43f4-fc37133d9d66/vdis/2dcbfc0b-5d0a-4f84-b7ec-e89b1747e0b4/47f611b1-7c83-4319-9fcf-aad09a025edc/20200319T145807Z.vhd",
  "path": "/",
  "partition": "ea853d6d-01"
}
{
  "command": "mount --options=loop,ro,offset=1048576 --source=/tmp/tmp-458p174rEvrE3fU/vhdi1 --target=/tmp/tmp-458llR4TibV7F12",
  "exitCode": 32,
  "stdout": "",
  "stderr": "mount: /tmp/tmp-458llR4TibV7F12: failed to setup loop device for /tmp/tmp-458p174rEvrE3fU/vhdi1.",
  "failed": true,
  "timedOut": false,
  "isCanceled": false,
  "killed": false,
  "message": "Command failed with exit code 32: mount --options=loop,ro,offset=1048576 --source=/tmp/tmp-458p174rEvrE3fU/vhdi1 --target=/tmp/tmp-458llR4TibV7F12",
  "name": "Error",
  "stack": "Error: Command failed with exit code 32: mount --options=loop,ro,offset=1048576 --source=/tmp/tmp-458p174rEvrE3fU/vhdi1 --target=/tmp/tmp-458llR4TibV7F12
    at makeError (/opt/xen-orchestra/node_modules/execa/lib/error.js:56:11)
    at handlePromise (/opt/xen-orchestra/node_modules/execa/index.js:114:26)
    at <anonymous>"
}

olivierlambert

Do you have a VG using multiple PVs?

shadowdao

That one does not. I assumed that was the case for another one that had the issue, and working to move the VMs to VHDs that are not on LVM.

# pvdisplay
  --- Physical volume ---
  PV Name               /dev/xvda2
  VG Name               centos
  PV Size               79.51 GiB / not usable 3.00 MiB
  Allocatable           yes
  PE Size               4.00 MiB
  Total PE              20354
  Free PE               16
  Allocated PE          20338
  PV UUID               zkCwDd-03ZP-LhLO-drIw-5fpY-Bf7f-J99g0U

olivierlambert

Same problem on XOA latest?

edit: ping julien-f and/or badrAZ

shadowdao

Both the built community edition and the XOA appliance seem to have this issue.

sccf

badrAZ julien-f

A little more info... I'm also having this problem, but it seems only non-Linux file systems have a problem on my side. Let me know if I can run/supply anything on this side that might be useful?

Debian, CentOS and Ubuntu files recoveries are all fine, but Windows Server, Windows 10 and pfSense drives are throwing the same error others have posted previously. Error seems to start a step earlier than what has been previously suggested though?

Server is XO Community on Debian, NFS remote (Synology NAS) all LVMs I think.

Selecting backup date is fine. Selecting drive from the backup gives this error:

Mar 25 06:05:32 BKP01 xo-server[431]: { Error: spawn fusermount ENOENT
Mar 25 06:05:32 BKP01 xo-server[431]:     at Process.ChildProcess._handle.onexit (internal/child_process.js:190:19)
Mar 25 06:05:32 BKP01 xo-server[431]:     at onErrorNT (internal/child_process.js:362:16)
Mar 25 06:05:32 BKP01 xo-server[431]:     at _combinedTickCallback (internal/process/next_tick.js:139:11)
Mar 25 06:05:32 BKP01 xo-server[431]:     at process._tickCallback (internal/process/next_tick.js:181:9)
Mar 25 06:05:32 BKP01 xo-server[431]:   errno: 'ENOENT',
Mar 25 06:05:32 BKP01 xo-server[431]:   code: 'ENOENT',
Mar 25 06:05:32 BKP01 xo-server[431]:   syscall: 'spawn fusermount',
Mar 25 06:05:32 BKP01 xo-server[431]:   path: 'fusermount',
Mar 25 06:05:32 BKP01 xo-server[431]:   spawnargs: [ '-uz', '/tmp/tmp-431GWsDT1lOqXyY' ],
Mar 25 06:05:32 BKP01 xo-server[431]:   originalMessage: 'spawn fusermount ENOENT',
Mar 25 06:05:32 BKP01 xo-server[431]:   command: 'fusermount -uz /tmp/tmp-431GWsDT1lOqXyY',
Mar 25 06:05:32 BKP01 xo-server[431]:   exitCode: undefined,
Mar 25 06:05:32 BKP01 xo-server[431]:   signal: undefined,
Mar 25 06:05:32 BKP01 xo-server[431]:   signalDescription: undefined,
Mar 25 06:05:32 BKP01 xo-server[431]:   stdout: '',
Mar 25 06:05:32 BKP01 xo-server[431]:   stderr: '',
Mar 25 06:05:32 BKP01 xo-server[431]:   failed: true,
Mar 25 06:05:32 BKP01 xo-server[431]:   timedOut: false,
Mar 25 06:05:32 BKP01 xo-server[431]:   isCanceled: false,
Mar 25 06:05:32 BKP01 xo-server[431]:   killed: false }

Partitions still load, but then this error occurs when selecting a partition:

Mar 25 06:07:51 BKP01 xo-server[431]: { Error: spawn fusermount ENOENT
Mar 25 06:07:51 BKP01 xo-server[431]:     at Process.ChildProcess._handle.onexit (internal/child_process.js:190:19)
Mar 25 06:07:51 BKP01 xo-server[431]:     at onErrorNT (internal/child_process.js:362:16)
Mar 25 06:07:51 BKP01 xo-server[431]:     at _combinedTickCallback (internal/process/next_tick.js:139:11)
Mar 25 06:07:51 BKP01 xo-server[431]:     at process._tickCallback (internal/process/next_tick.js:181:9)
Mar 25 06:07:51 BKP01 xo-server[431]:   errno: 'ENOENT',
Mar 25 06:07:51 BKP01 xo-server[431]:   code: 'ENOENT',
Mar 25 06:07:51 BKP01 xo-server[431]:   syscall: 'spawn fusermount',
Mar 25 06:07:51 BKP01 xo-server[431]:   path: 'fusermount',
Mar 25 06:07:51 BKP01 xo-server[431]:   spawnargs: [ '-uz', '/tmp/tmp-431yl3BiFVbSmWB' ],
Mar 25 06:07:51 BKP01 xo-server[431]:   originalMessage: 'spawn fusermount ENOENT',
Mar 25 06:07:51 BKP01 xo-server[431]:   command: 'fusermount -uz /tmp/tmp-431yl3BiFVbSmWB',
Mar 25 06:07:51 BKP01 xo-server[431]:   exitCode: undefined,
Mar 25 06:07:51 BKP01 xo-server[431]:   signal: undefined,
Mar 25 06:07:51 BKP01 xo-server[431]:   signalDescription: undefined,
Mar 25 06:07:51 BKP01 xo-server[431]:   stdout: '',
Mar 25 06:07:51 BKP01 xo-server[431]:   stderr: '',
Mar 25 06:07:51 BKP01 xo-server[431]:   failed: true,
Mar 25 06:07:51 BKP01 xo-server[431]:   timedOut: false,
Mar 25 06:07:51 BKP01 xo-server[431]:   isCanceled: false,
Mar 25 06:07:51 BKP01 xo-server[431]:   killed: false }
Mar 25 06:07:51 BKP01 xo-server[431]: 2020-03-24T20:07:51.178Z xo:api WARN admin@admin.net | backupNg.listFiles(...) [135ms] =!> Error: Command failed with exit code 32: mount --options=loop,ro,offset=608174080 --source=/tmp/tmp-431yl3BiFVbSmWB/vhdi15 --target=/tmp/tmp-431ieOQYw52Cr6a

olivierlambert

sccf can you confirm same issue on XOA?

sccf

OK, so XOA is working fine on my side except for the pfSense/FreeBSD VM, but to be honest I'm not sure I have ever tried a file level restore on it before and can't see any reason why I would ever need to in future.

I guess I'm looking for an environment issue then, perhaps a dependency? I've got 2 independent sites (one at home, one at our local church) that are configured the same and having the same problems. Will try setting up on Ubuntu and see if that resolves.

badrAZ

shadowdao sccf

Hi,

This issue isn't easy to reproduce in our lab. Can you please provide a VM export with steps to reproduce this issue please?

It will help us to diagnostic the issue.