[SOLVED] pbs restore proxmox kvm from cli

[EuroDomenii]

According to
https://pbs.proxmox.com/docs/administration-guide.html#restoring-data, first check

root@rise1rbx:~# proxmox-backup-client restore vm/100/2020-07-16T09:52:09Z index.json -
{
  "backup-id": "100",
  "backup-time": 1594893129,
  "backup-type": "vm",
  "files": [
    {
      "crypt-mode": "none",
      "csum": "d94abe3ccfce64fb7732782858e50401945f2627be3c3378371284c3a8dd9c88",
      "filename": "qemu-server.conf.blob",
      "size": 1100
    },
    {
      "crypt-mode": "none",
      "csum": "a594dd86580f2caef0d68edeb8c05b920cd58d0062ae7be808cdce1fd1ff7cd7",
      "filename": "drive-scsi0.img.fidx",
      "size": 211741048832
    }
  ],
  "unprotected": {}
}

But, instead of -, I should specify the /target/path/

The problem is that I’m not supposed to rebuild manually the storage for the KVM, instead the proxmox tool should take care of it instead of me, along with all other configuration of the virtual machine. ( especially if i plan to restore to lvm thin, /dev/vmdata/vm-102-disk-0 , not directory)

Looking at the restore log from GUI, I have

restore proxmox backup image: /usr/bin/pbs-restore --repository root@pam@localhost:store2 vm/100/2020-07-16T09:52:09Z drive-scsi0.img.fidx /dev/vmdata/vm-102-disk-0 --verbose --format raw --skip-zero

cat /etc/pve/storage.cfg
dir: local
        path /var/lib/vz
        content snippets,backup,vztmpl,iso,rootdir,images
        maxfiles 0
        shared 0

lvmthin: local-lvm
        thinpool vmstore
        vgname vmdata
        content images,rootdir

dir: sata
        path /var/eurodomenii/backup
        content rootdir,vztmpl,backup,images,iso
        maxfiles 0
        shared 0

pbs: pb
        datastore store2
        server localhost
        content backup
        fingerprint 67:21:7d:44:e0:a6:32:2a:d1:6a:f0:09:44:0a:a8:c5:b5:4b:27:05:db:17:3e:6f:7b:35:8c:b0:c2:39:d2:16
        maxfiles 0
        username root@pam

Instead, I was trying to use qmrestore utility

root@rise1rbx:/# qmrestore /ab/store2/vm/100/2020-07-16T09:52:09Z/drive-scsi0.img.fidx 103
ERROR: couldn't determine archive info from '/ab/store2/vm/100/2020-07-16T09:52:09Z/drive-scsi0.img.fidx'

root@rise1rbx:/ab/store2/vm/100/2020-07-16T09:52:09Z# qmrestore /ab/store2/vm/100/2020-07-16T09:52:09Z/index.json.blob 105
ERROR: couldn't determine archive info from '/ab/store2/vm/100/2020-07-16T09:52:09Z/index.json.blob'

root@rise1rbx:~# qmrestore pb:/vm/100/2020-07-16T09:52:09Z 103
unable to parse PBS volume name '/vm/100/2020-07-16T09:52:09Z'

Especially required for https://forum.proxmox.com/threads/proxmox-backup-server-continuous-restore-script.73072/ . Thx!

 

[fabian]

for 'qmrestore', you need to pass in a full volume ID as returned by 'pvesm list'

 

[EuroDomenii]

root@rise1rbx:~# pvesm list
400 not enough arguments
pvesm list <storage> [OPTIONS]
root@rise1rbx:~# pvesm list pb
Volid                                 Format  Type              Size VMID
pb:backup/ct/104/2020-07-16T14:40:58Z pbs-ct  backup       902334049 104
pb:backup/ct/104/2020-07-16T14:43:57Z pbs-ct  backup      1300845995 104
pb:backup/ct/104/2020-07-16T15:17:39Z pbs-ct  backup     30543534356 104
pb:backup/ct/104/2020-07-16T15:30:52Z pbs-ct  backup     34746569641 104
pb:backup/vm/100/2020-07-16T09:52:09Z pbs-vm  backup    211741050242 100
pb:backup/vm/100/2020-07-16T10:11:49Z pbs-vm  backup    211741050242 100
pb:backup/vm/100/2020-07-16T10:25:27Z pbs-vm  backup    211741050245 100
pb:backup/vm/100/2020-07-16T11:17:17Z pbs-vm  backup    748611962330 100
pb:backup/vm/100/2020-07-16T12:08:16Z pbs-vm  backup    748611962329 100
pb:backup/vm/100/2020-07-16T12:24:48Z pbs-vm  backup    748611962331 100
pb:backup/vm/102/2020-07-16T09:36:04Z pbs-vm  backup    211741050262 102
pb:backup/vm/102/2020-07-16T09:49:53Z pbs-vm  backup    211741050264 102

It works, thanks!

qmrestore pb:backup/vm/100/2020-07-16T09:52:09Z 103

 

[fabian]

in case you are interested: the 'pbs-restore' binary called by 'qmrestore' uses the same underlying library as proxmox-backup-client to talk with PBS, but it is built together with pve-qemu-kvm like the 'vma' binary, and has access to Qemu block drivers directly.

 

[hsv000]

Is it possible to recover only one disk? I have a virtual machine that has 2 disks, 20GB for system and 400GB for data. Is it possible to recover only the first one?

 

[Dunuin]

Using the GUI it will restore both disks. And in case you excluded the 400GB one from the backup, a restore would destroy the existing 400GB disk too so you would just end up with a 20GB system disk no 400GB disk anymore. I already created a feature request for that:
https://bugzilla.proxmox.com/show_bug.cgi?id=3783

Not sure if such would be possible using the proxmox-backup-client using the CLI. I think that might work.