[DRBD-user] DRBD9/PVE4: udev Link Creation timed out

Dominic Pratt dmp at zmt.info
Tue Jun 20 15:47:08 CEST 2017

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


Hi there,

we're running DRBD9/PVE4, created two disks on DRBD yesterday and there were no errors at all.

Trying to start that VM up, we recognized, that there was no link to /dev/drbd/by-res/. The result is, that the VM cannot start up at all. The link is only missing on one of the cluster nodes, on the other two the link has been created.

Checking the syslog, we recognized these lines:

Jun 20 08:41:00 px1 systemd-udevd[11667]: timeout '/usr/sbin/drbdadm sh-udev minor-131'
Jun 20 08:41:00 px1 systemd-udevd[11667]: timeout '/lib/udev/vdev_id -d drbd131'
Jun 20 08:41:02 px1 systemd-udevd[11663]: timeout '/usr/sbin/drbdadm sh-udev minor-130'
Jun 20 08:41:02 px1 systemd-udevd[11663]: timeout '/lib/udev/vdev_id -d drbd130'

It seems, that udev timed out and drbd does not check it's exit status? This happened even though we had the "sleep 10" in our drbd-code as stated in our mails on here before.

drbdsetup shows both disks correctly:

vm-120-disk-1 role:Primary
  disk:UpToDate
  px3 role:Secondary
    peer-disk:UpToDate

vm-120-disk-2 role:Primary
  disk:UpToDate
  px3 role:Secondary
    peer-disk:UpToDate

We created those links by running "udevadm trigger" and they were created right on the spot.

Mit freundlichen Grüßen

Dominic Pratt
Produkt- und Softwareentwicklung

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