Since dell raid cards are LSI Megaraid cards and other threads reported that an update of the kernel module for the raid card fixed the issue I installed the latest megaraid kernel module yesterday.
Last night was the first time my vzdump snaphots ran without crashing my server. I am on the following driver version now:
modinfo megaraid_sas
filename: /lib/modules/2.6.32-22-pve/kernel/drivers/scsi/megaraid/megaraid_sas.ko
description: LSI MegaRAID SAS Driver
author:
megaraidlinux@lsi.com
version: 06.600.18.00
license: GPL
srcversion: D7C72B1660AC8DB45B7443A
alias: pci:v00001000d0000005Fsv*sd*bc*sc*i*
alias: pci:v00001000d0000005Dsv*sd*bc*sc*i*
alias: pci:v00001000d0000005Bsv*sd*bc*sc*i*
alias: pci:v00001028d00000015sv*sd*bc*sc*i*
alias: pci:v00001000d00000413sv*sd*bc*sc*i*
alias: pci:v00001000d00000071sv*sd*bc*sc*i*
alias: pci:v00001000d00000073sv*sd*bc*sc*i*
alias: pci:v00001000d00000079sv*sd*bc*sc*i*
alias: pci:v00001000d00000078sv*sd*bc*sc*i*
alias: pci:v00001000d0000007Csv*sd*bc*sc*i*
alias: pci:v00001000d00000060sv*sd*bc*sc*i*
alias: pci:v00001000d00000411sv*sd*bc*sc*i*
depends:
vermagic: 2.6.32-22-pve SMP mod_unload modversions
parm: max_sectors:Maximum number of sectors per IO command (int)
parm: msix_disable
isable MSI-X interrupt handling. Default: 0 (int)
parm: msix_vectors:MSI-X max vector count. Default: Set by FW (int)
parm: throttlequeuedepth:Adapter queue depth when throttled due to I/O timeout. Default: 16 (int)
parm: resetwaittime:Wait time in seconds after I/O timeout before resetting adapter. Default: 180 (int)
I will monitor the situation for a week. If the problems are gone can someone from the proxmox team add the latest megaraid driver to the proxmox kernel???
Thanks
Sven