Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Am Dienstag, 4. Januar 2005 15:55 schrieb Dave Dykstra: > The FAQ says that DRBD does not allow mounting the secondary, but I found > a way to do it. If I start up DRBD on two nodes, make one primary but > not mount it there, then attempt to mount the secondary side it gets > mounted read-only. Then I can mount the primary read-write. This may > be considered a feature by some but I consider it a bug. I accidentally > got into this situation by a misunderstanding of the parameter to the > heartbeat 'drbddisk' script when I configured heartbeat for the first > time and passed 'drbd0' to the script as an example showed rather than the > name I had chosen for my resource. As a result, the primary & secondary > sides didn't get swapped, but heartbeat unmounted the primary side and > mounted the secondary. > Unfortunately it is not possible to prohibit mounting it on the secondary under Linux-2.4.x If you would retry on a Linux-2.6.x kernel, you will notice that it fails on 2.6 . > Secondary bug report: it took me a long time to figure out because I > saw no error messages anywhere from drbddisk; the only effect was that > the filesystem was mounted read-only. It turns out that there were no > error messages because the error codes from "$DRBDADM primary $RES" and > "$DRBDADM secondary $RES" in /etc/ha.d/resource.d/drbddisk are ignored. > If I put a "set -e" before each of those two commands, heartbeat notices > the error code and refuses to do the switch when I request a voluntary > hb_standby failover. I report this to the drbd mailing list because at > least on Debian the drbddisk script is part of one of the drbd packages, > not the heartbeat package. Right... this is probabely a bug... > Here's more details in case it matters. The two machines are newly > purchased running a recent Debian testing with packages > drbd0.7-module-source & drbd0.7-utils version 0.7.5-2 and a custom kernel > based on 2.4.26. [...] I will look into this... -Philipp -- : Dipl-Ing Philipp Reisner Tel +43-1-8178292-50 : : LINBIT Information Technologies GmbH Fax +43-1-8178292-82 : : Schönbrunnerstr 244, 1120 Vienna, Austria http://www.linbit.com :