Error with CIFS storage - Communication Failure

bmit

Member
Apr 15, 2020
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0
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Hello, everyone,


I have the problem with a current (6.1-8) version - but also with previous versions - that my backup storage, which is connected via CIFS, loses the connection. Proxmox then reports "Communication Failure" and the storage is offline (see also PVE1.png).


When I connect to the PVEHost via SSH, the "StorageBox" is displayed as mounted via "df -a" (see PVE2.png). But access is not possible (see PVE3.png).


As soon as I remove the storage, delete the directory and then reconnect, the error is fixed, but occurs again after a few days.


Code:
pvesm remove backupSB
umount /mnt/pve/backupSB (on both servers in the cluster)
rm -r /mnt/pve/backupSB (on both servers in the cluster)
pvesm add cifs backupSB --server ****.your-storagebox.com --share backup --username **** --password ****
Change to "Backup Dump" in the GUI


I'm attaching a system report.




Thanks a lot

Christian

------------------------------------------------------------------------------------------------------------

Hallo zusammen,

ich habe bei einer aktuellen (6.1-8) Version - aber auch schon bei den vorherigen Versionen - das Problem, dass mir mein Backupspeicher, welcher über CIFS eingebunden ist, die Verbindung verliert. Proxmox meldet dann "Communication Failure" und der Speicher ist offline (siehe auch PVE1.png).

Wenn ich mich per SSH auf den PVEHost aufschalte, wird die "StorageBox" via "df -a" als gemountet angezeigt (siehe PVE2.png). Ein Zugriff ist aber nicht möglich (siehe PVE3.png).

Sobald ich den Speicher entferne, das Verzeichnis lösche und dann neu verbinde, ist der Fehler behoben, tritt aber nach einigen Tagen wieder auf.

Code:
pvesm remove backupSB
umount /mnt/pve/backupSB (auf beiden Servern im Cluster)
rm -r /mnt/pve/backupSB (auf beiden Servern im Cluster)
pvesm add cifs backupSB --server ****.your-storagebox.de --share backup --username **** --password ****
In der GUI ändern auf "Backup Dump"

Einen Systemreport hänge ich an.



Vielen Dank
Christian
 

Attachments

  • PVE1.JPG
    PVE1.JPG
    12 KB · Views: 6
  • PVE2.JPG
    PVE2.JPG
    26.9 KB · Views: 6
  • PVE3.JPG
    PVE3.JPG
    27.7 KB · Views: 6
  • server02-report-Wed-15-April-2020-19-14.txt
    124.7 KB · Views: 3
Hi,

I guess a process is waiting for IO on this mount point.
The problem with processes that are waiting for IO is that they are not interruptable.
This will prevent the unmounting at the moment.
After a while, the process gave up and you can unmount the share.
Proxmox VE does not actively umount shares.
 

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