Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Wed, Jun 3, 2009 at 4:09 PM, Tony Lownds <tony at pagedna.com> wrote: > > On Jun 3, 2009, at 6:52 AM, Heiko wrote: > > > > On Wed, Jun 3, 2009 at 3:43 PM, Heiko <rupertt at gmail.com> wrote: > >> >> >> On Wed, Jun 3, 2009 at 3:34 PM, Tony Lownds <tony at pagedna.com> wrote: >> >>> >>> On Jun 2, 2009, at 10:59 PM, Heiko wrote: >>> >>> Hello, >>>> >>>> i am investigating why our server pairs reboot themselves from time to >>>> time. >>>> This is very annoing because these machines are in production and i >>>> always >>>> have to fix mysql replications or drbd splitbrains after these reboots. >>>> >>>> We have 3 pairs that use a drbd/xen/heartbeat setup and 2 of these pairs >>>> crash, >>>> sometimes every 2 week sometimes only twice a year. >>>> >>>> I first thought it could be heartbeat, but I stopped the service on 1 >>>> pair and we also had a crash. >>>> Are there other people who had these kind of crashes? >>>> >>> >>> Yes, sounds familiar... switching to protocol "A" is a workaround that >>> helped for me. >>> >>> http://article.gmane.org/gmane.comp.linux.drbd/17684 >>> >> Hello Tony, >> >> you are giving me hope, but I dont understand that post you linked. >> I now have set to Protocoll to A. >> Can I just run drbdadm adjust "resource" without getting any trouble/data >> los? >> > > I think you'll have to try it and see. I personally brought down xen, then > restarted drbd > on both sides, then brought back xen during a downtime window. That worked > well for me. > > You can see the current protocol in /proc/drbd near the end of the first > line for each resource. > > # cat /proc/drbd | grep -w A > 0: cs:Connected st:Secondary/Primary ds:UpToDate/UpToDate A r--- > 1: cs:Connected st:Secondary/Primary ds:UpToDate/UpToDate A r--- > 2: cs:Connected st:Secondary/Primary ds:UpToDate/UpToDate A r--- > 3: cs:Connected st:Secondary/Primary ds:UpToDate/UpToDate A r--- > Hi Tony, it looks the same on my setup now. I had one crash during these changes, and so I could first adjust the drbd and than start xen. On another pair i did an adjust while the VM is running, nothing bad happend. I hope we dont have anymore crashes... greetings > > -Tony > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.linbit.com/pipermail/drbd-user/attachments/20090603/83b40935/attachment.htm>