Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Mon, Sep 19, 2016 at 10:59:50AM +0200, drbd-user-request at lists.linbit.com wrote: > Date: Mon, 19 Sep 2016 09:37:18 +0200 > From: Marco Marino <marino.mrc at gmail.com> > Subject: [DRBD-user] Drbd/pacemaker active/passive san failover > > Hi, I'm trying to build an active/passive cluster with drbd and pacemaker > for a san. I'm using 2 nodes with one raid controller (megaraid) on each > one. Each node has an ssd disk that works as cache for read (and write?) > realizing the CacheCade proprietary tecnology. Hi, just speculating on your controller config - if the CacheCade is used also for your OS volume, the I/O errors (and/or OS setting its volumes to R/O) may have kept DRBD and pacemaker from reacting, as they may need to write to the local disk. > local-io-error "/usr/lib/drbd/notify-io-error.sh; > /usr/lib/drbd/notify-emergency-shutdown.sh; echo o > > /proc/sysrq-trigger ; halt -f"; possibly the Script notify-io-error.sh was just blocked as it could not write to the local disk (it wants to send an email). Perhaps you can restrict CacheCade to the virtual disk you run your drbd volumes on? Matthias