[PVE-User] Backup to samba share stalling/locking up

[Bart Lageweg | Bizway]

Hi István,

Our limit is 6 hour, because good raid etc the impact is minimal.

Sample configuration

25 VM's on 2x Dell R515 - 4170HE H700+BBU SATA - DRBD (4x Gbit)

DRBD A - 864 GB used
Local disk - 339 GB used (backup) - QNAP NFS (offside location! 2 versions VM) - 678 GB - 5 hours

DRBD B - 758 GB used
Local disk - 334 GB used (backup) - QNAP NFS (offside location! 2 versions VM) - 668 GB - 6 hours

We also backup in the same time the OS with there own backup solution.

Because we are using DRBD, we can backup to the local disk without interrupt the VM or blocking I/O on DRDB storage.
In the past we got also a lot of locking errors QNAP/NFS/SAMBA etc. so first backup to local and then copy to the QNAP is working perfect for 2 years+

Thanks



-----Oorspronkelijk bericht-----
Van: Pongrácz István [mailto:pongracz.istvan at gmail.com] 
Verzonden: maandag 24 februari 2014 9:31
Aan: Bart Lageweg | Bizway; 'Lindsay Mathieson'; ProxMox Users
Onderwerp: Re: [PVE-User] Backup to samba share stalling/locking up

Hi Bart,

May I ask, how much time does it take to complete the backup and how much disk space does it use?

Thank you!
Best regards,
István


 
----------------eredeti üzenet-----------------
Feladó: "Bart Lageweg | Bizway" bart at bizway.nl
Címzett: "'Lindsay Mathieson'" 
, "ProxMox Users" 
Dátum: Mon, 24 Feb 2014 08:00:30 +0000
-------------------------------------------------
 
 
> Hi Lindasy,
> 
> We are using the rack QNAP on 2 locations with NFS, backup first to 
> local and copy to QNAP (40+ nodes).
> 
> /etc/vzdump.conf
> 
> Script: /usr/local/bin/backup-hook.pl
> 
> #!/usr/bin/perl -w
> # hook script for vzdump (--script option use strict;
> 
> print "HOOK: " . join (' ', @ARGV) . "\n";
> 
> # config
> my $phase = shift;
> my $mode = shift; # stop/suspend/snapshot my $vmid = shift; my $vmtype 
> = $ENV{VMTYPE}; # openvz/qemu my $dumpdir = $ENV{DUMPDIR}; my 
> $hostname = $ENV{HOSTNAME}; my $tarfile = $ENV{TARFILE}; my $logfile = 
> $ENV{LOGFILE}; my $backuplocatie = "/mnt/pve/sharenameNFS/dump";
> 
> my %dispatch = (
> "job-start" => \&nop,
> "job-end" => \&nop,
> "job-abort" => \&nop,
> "backup-start" => \&nop,
> "backup-end" => \&backup_end,
> "backup-abort" => \&nop,
> "log-end" => \&log_end,
> "pre-stop" => \&nop,
> "pre-restart" => \&nop,
> );
> 
> sub upload {
> system("mv -f $backuplocatie/vzdump-qemu-$hostname-$vmid.vma.lzo
> $backuplocatie/vzdump-qemu-oud-$hostname-$vmid.vma.lzo");
> system("cp $tarfile
> $backuplocatie/vzdump-qemu-$hostname-$vmid.vma.lzo") == 0 || die 
> "upload cp $tarfile 
> $backuplocatie/dump/vzdump-qemu-$hostname-$vmid.vma.tar.lzo
> backup-host failed";
> 
> print "HOOK: upload " . $tarfile . " to 
> $backuplocatie/vzdump-qemu-$hostname-$vmid.vma.lzo done\n"; }
> 
> sub nop {
> # nothing
> }
> 
> sub backup_end {
> upload($tarfile);
> }
> 
> sub log_end {
> # upload($logfile);
> }
> 
> 
> 
> 
> 
> -----Oorspronkelijk bericht-----
> Van: pve-user-bounces at pve.proxmox.com 
> [mailto:pve-user-bounces at pve.proxmox.com ] Namens Lindsay Mathieson
> Verzonden: maandag 24 februari 2014 7:42
> Aan: ProxMox Users
> Onderwerp: Re: [PVE-User] Backup to samba share stalling/locking up
> 
> On 24 February 2014 16:38, Lindsay Mathieson
 
> wrote:
>> I'm testing backing up a vm to a USB Drive attached to a Qnap NAS, 
>> shared out via samba.
>>
>> It consistently stalls at 17% and can't be stopped via the web gui.
>> The only thing that works is a reboot of the server and the vm has to 
>> be unlocked.
> 
> Seeing this in dmesg
> 
> CIFS VFS: No writable handles for inode
> 
>> --
>> Lindsay
> 
> 
> 
> --
> Lindsay
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