On Wed, Jun 27, 2018 at 12:37:20PM +0200, Julien Escario wrote: > Hello, > We're experiencing a really strange situation. > We often play with : > drbdmanage peer-device-options --resource <ressource> --c-max-rate <rate> > > especially when a node crash and need a (full) resync. > > When doing this, sometimes (after 10 or 20 such commands), we end up with > drbdmanage completely stuck and a drbdsetup that seems to block on an IO with > returning. > For example : > drbdsetup disk-options 144 --set-defaults --read-balancing=prefer-local > --al-extents=6481 --al-updates=no --md-flushes=no > > drbdadm status display ressource up to this one then hangs on drbdsetup call. > > drbdtop is still usable. > > Right now, we didn't manage to find a solution without rebooting the node > (sadly). > > Do you experience such situation ? > What can cause this ?
What version of DRBD9 is that (cat /proc/drbd)? drbdsetup hangs for a reason, kernel related, not an actual bug in drbdsetup. "dmesg" at that time would be interesting. Yes, I saw that, but not recently, only with by now pretty old versions of DRBD9. > Is there a way to unblock this process without rebooting ? Depends, but as a rule of thumb: when that happens the kernel is already in a state where you want to/have to reboot. Regards, rck _______________________________________________ drbd-user mailing list [email protected] http://lists.linbit.com/mailman/listinfo/drbd-user
