Uncompressed Backup Problem

[yarii]

I've got a problem with backuping a VM to remote NAS whitch is mounted with samba to /mnt/z1

This is the log:
INFO: starting new backup job: vzdump 101 --compress 0 --node far --mode snapshot --remove 0 --storage z1
INFO: Starting Backup of VM 101 (qemu)
INFO: status = running
INFO: update VM 101: -lock backup
INFO: VM Name: iqBL
INFO: include disk 'sata0' 'local:101/vm-101-disk-1.qcow2'
INFO: backup mode: snapshot
INFO: ionice priority: 7
INFO: creating archive '/mnt/z1/dump/vzdump-qemu-101-2016_11_28-10_43_25.vma'
INFO: started backup task '570f28c8-8aca-497d-964c-1d7b6bb0adcf'
INFO: status: 0% (3801088/85899345920), sparse 0% (1286144), duration 1, 3/2 MB/s
ERROR: vma_queue_write: write error - Invalid argument
INFO: aborting backup job
ERROR: Backup of VM 101 failed - vma_queue_write: write error - Invalid argument
INFO: Backup job finished with errors
TASK ERROR: job errors

The problem only exists if I choose compresion=none.
The backup process is done succesfully when I choose LZA compression.

I use the newest proxmox and do autoupdates every day on that host.

On local there is a mirror with ext4+lvm on it (standard instalation).
On remote there is a ext4, remote share is mounted by samba on /mnt/z1.
VM disks have qcow2 format.

How to diagnose that?
Does somebody challange with that or similar problem?

Regards
JK

 

[Trigve]

I've got the same problem too.

I'm using ZFS for VM storage and disks are .raw. This problem has been reported on devel list some time ago ago, but no resolution http://pve.proxmox.com/pipermail/pve-devel/2014-June/011861.html .

 

[yarii]

If local storage is checked as a backup storage the problem not exists.
If samba storage is checked as a backup storage the problem exists.

[9631705.054960] CIFS VFS: Error connecting to socket. Aborting operation.
[9631705.055143] CIFS VFS: cifs_mount failed w/return code = -113

All the time samba share is avaible and I can use mounted on /mnt/z1 remote cifs share.

 

[yarii]

a did a strace for that whole backup process:

http://pastebin.com/7ZEQGavb
http://pastebin.com/3h7ebE9e

Is somebody able to diagnose that?

 

[VDNKH]

I have the same PROBLEM, i can do backup with compression lzo and gzip, but i cant with none compression, the vma format...
The Storage is a CIFS mounted in a local directory on the proxmox server, i add this backup storage as a directory on the web gui.
I do something wrong???