Root file system locked and backup not possible

[Halgeir]

I have lately experienced that my root filesystem on Proxmox 2.3 have been locked. I like to reboot the server but want to backup the vm's
before the reboot just in case anything goes wrong. This is not possible because vzdump needs write access to root drive. Is it possible to
solve this in some way?

)-|algeir

 

[m.ardito]

what you mean by "locked"? how many nodes total/running has you cluster?

Marco

 

[Halgeir]

what you mean by "locked"? how many nodes total/running has you cluster?

Marco

Just one node with several virtual machine running on local disks.
The linux system have suddenly lost write access to /dev/mapper/pve-root.
I have tried to remount it into rw state but I can't.

The drive /dev/mapped/pve-data and the lvm partitions are working as normal.

Would be nice if there was some way to run vzdump on the server before the reboot.

)-|algeir

 

[m.ardito]

ok, I just asked because something similar happens when a cluster looses quorum. in that case there's a solution (see pvecm man page)
when that occours, the cluster is "locked" and most operations won't work.
Marco

 

[Halgeir]

The reason was a failing raid 5 storage on a HP server. I solved this replacing the failing disc and reinstalling Proxmox VE on the node. Now it's runs fine.