vm crash while backup

celtar

Renowned Member
Feb 10, 2016
17
3
68
56
Hi,

we have little Problems with only one vm while backup. Sometimes (different time, crash maybe once a week) the vm crash (see backup-Log). We do an online Backup

Proxmox Version: PVE Manager Version 5.1.46/ae8241d4
Dell Server 530, 2x Xeon E5/2640v3, 192GB RAM, Small PCIe SSD boot/proxmox, Dell RAID5 5TB, Asus 10GBit Network

we make a full backup of our vm with 4 HDs
INFO: include disk 'virtio0' 'local_pve1:214/vm-214-disk-1.qcow2' 501G
INFO: include disk 'virtio1' 'local_pve1:214/vm-214-disk-4.qcow2' 300G
INFO: include disk 'virtio2' 'local_pve1:214/vm-214-disk-5.qcow2' 500G
INFO: include disk 'virtio3' 'local_pve1:214/vm-214-disk-6.qcow2' 600G

Our vzdump.conf:
lockwait: 360
ionice: 0 ## testet with no ionice - the problem is still there
size: 8192
bwlimit: 921600 ## we have a 10GBit Backbone Switch (Cisco) # testet with no wblimit - Problem ist still there
tmpdir: /mnt/pve/server01_backupnfs ## (This is a NFS Share - Server unfortunately Windows 2008R2)

Backup-Log (The VM is not running any more - we have to start it manually after crash)
INFO: status: 86% (1754516488192/2040109465600), sparse 33% (692383707136), duration 31895, read/write 28/21 MB/s
INFO: status: 87% (1774924333056/2040109465600), sparse 34% (706959405056), duration 32412, read/write 39/11 MB/s
INFO: status: 88% (1795296722944/2040109465600), sparse 35% (719317831680), duration 32895, read/write 42/16 MB/s
ERROR: VM 214 not running
INFO: aborting backup job
ERROR: VM 214 not running
ERROR: Backup of VM 214 failed - VM 214 not running
INFO: Backup job finished with errors

Is there a something to optimize? We can not reproduce the failure. Sometimes the vm runs through the backup sometimes not. Is there a log file where we can see why the vm is not running any more?

Thanks for a hint :)
kind regards
celtar
 

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