[PVE-User] qmrestore to external iscsi storage fails

Sascha Zucca tafkaz at online.de
Fri May 6 19:22:11 CEST 2011


Hi list,
i'd most desperately would need your help on a very odd issue i have here.
I would like to qmrestore a backupfile to an ext. storage.
but no matter what i try, it'll always fail.

First of all:
I have a MSA2312i  with 12 x 300 GB SAS (full enclosure) configured as 
Raid10.
In the Management Utility of the MSA2312i it is configured as follows:

*Vdisks*

    *
      *vd01* (RAID10)
          o
            Volume *vd01_v001* (1005.9GB)
          o
            Volume *vd01_v002* (792.0GB)



Here's what i do next :

1. install multipath-tools as described in 
http://pve.proxmox.com/wiki/ISCSI_Multipath

2. Configure iscsi storage as described in 
http://pve.proxmox.com/wiki/Storage_Model#LVM_Groups_with_Network_Backing
MSA2312i    ISCSI    Yes    Yes    Yes    n/a    n/a    n/a
vd01_v001    LVM    Yes    Yes    Yes    600.00    936.91    64.04%
vg01_v002    LVM    Yes    Yes    Yes    0.00    737.70    0.00%

3. multipath -ll shows
/3600c0ff0001118d861fac34d01000000dm-3 HP      ,MSA2312i
[size=937G][features=0][hwhandler=0]
\_ round-robin 0 [prio=1][active]
  \_ 17:0:0:1 sdh 8:112 [active][ready]
\_ round-robin 0 [prio=1][enabled]
  \_ 14:0:0:1 sdb 8:16  [active][ready]
\_ round-robin 0 [prio=1][enabled]
  \_ 15:0:0:1 sdd 8:48  [active][ready]
\_ round-robin 0 [prio=1][enabled]
  \_ 16:0:0:1 sdf 8:80  [active][ready]
3600c0ff0001118d86bfac34d01000000dm-4 HP      ,MSA2312i
[size=738G][features=0][hwhandler=0]
\_ round-robin 0 [prio=1][active]
  \_ 17:0:0:2 sdi 8:128 [active][ready]
\_ round-robin 0 [prio=1][enabled]
  \_ 14:0:0:2 sdc 8:32  [active][ready]
\_ round-robin 0 [prio=1][enabled]
  \_ 15:0:0:2 sde 8:64  [active][ready]
\_ round-robin 0 [prio=1][enabled]
  \_ 16:0:0:2 sdg 8:96  [active][ready]/
looks good...

4. now i start the command
qmrestore --storage vd01_v001 vzdump-qemu-101-2011_05_05-20_05_02.tgz 101 &
the dump consists of two vds (200GB and 600GB)

5. the first vd is being restored to the external storage, i can see it 
in the PM-storage-gui and through lvdisplay

6. after a while i get the message that vd1 has been restored allright 
and restore of vd2 has started
i can then see both vds (PM-storage-gui and through lvdisplay)

7. after another while qmrestore stops, the onle message i can find ist 
this in syslog:
vzdump[8439]: ERROR: restore QemuServer backup 
'vzdump-qemu-101-2011_05_05-20_05_02.tgz' failed - interrupted by signal

8. the vd1 has vanished, only (an obviously broken) vd2 can be seen 
(PM-storage-gui and through lvdisplay)

9. no VM is shown in the virtual machine part of the PM-GUI

I tried barely everything to get it working...
In the test phase of this environment it worked absolutely flawlessly...
Now that we built everything in place no more...


Please also consider that qmrestore --storage local 
vzdump-qemu-101-2011_05_05-20_05_02.tgz 101 &
works like a charm!


What do i do that is so wrong???

Please help me...


Thank you very, very much!
Sascha


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