[solved] deleted directories reappear shortly

[seron]

While troubleshooting failure to mount ZFS file systems I noticed that deleted mountpoint directory trees reappear within a few seconds, which I guess is the reason that zfs reports "cannot mount '/tank': directory is not empty".

Removing the mountpoints with "rm -fr" completes without errors, but within a few seconds the whole directory subtree reappears. Moving them makes the original appear all the same.

I've never seen this behaviour before. These mountpoints don't appear in the output from the mount command.

I tried to eliminate ZFS from this problem by running its init.d scrips with 'stop' and unloading its kernel modules, so that 'ps ax' doesn't list it.

What could be causing this?

Proxmox 3.1-24

 

[m.ardito]

Re: deleted directories reappear shortly

is it defined as cluster storage? afaik, pve will try to create missing mount points...

Marco

 

[seron]

Re: deleted directories reappear shortly

No cluster yet. Just one lab node. I noticed just now that if the storage is disabled in the GUI the directories won't persist any more. I guess that zfs needs to mount its file systems before pve has a chance to recreate the directory trees. I'm not sure how though.

 

[m.ardito]

Re: deleted directories reappear shortly

yes, i meant "defined as datacenter storage". I guess pve expects that to exist for an enabled storage

Marco

 

[seron]

Re: deleted directories reappear shortly

I found the answer in the ZFS section in the Wiki.