Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hi, Compared to 8.3.12 this release has only bug fixes, no new features. It is worth noting that all previous DRBD-releases did not enforce correct ordering of (some) write operations on a resync-target node. This can be triggered with the 'cfq' (and possible other) linux disk schedulers. -- It is known that when you stay with an DRBD release before 8.3.13 and switch the scheduler to 'noop', then it is no longer to reproduce the issue. It is a rare condition, which is hard to trigger, it may causes corruption in the sense that it looks like if a single block write was not executed on the secondary. (actually it was overwritten with the previous version of the data, this second write originates from the resync process.) Upgrading to this release is for sure a good idea. 8.3.13 (api:88/proto:86-96) -------- * Fixed a write ordering problem on SyncTarget nodes for a write to a block that gets resynced at the same time. The bug can only be triggered with a device that has a firmware that actually reorders writes to the same block * Fixed a race between disconnect and receive_state, that could cause a IO lockup * Fixed resend/resubmit for requests with disk or network timeout * Make sure that hard state changed do not disturb the connection establishing process (I.e. detach due to an IO error). When the bug was triggered it caused a retry in the connect process * Postpone soft state changes to no disturb the connection establishing process (I.e. becoming primary). When the bug was triggered it could cause both nodes going into SyncSource state * Fixed a refcount leak that could cause failures when trying to unload a protocol family modules, that was used by DRBD * Dedicated page pool for meta data IOs * Deny normal detach (as opposed to --forced) if the user tries to detach from the last UpToDate disk in the resource * Fixed a possible protocol error that could be caused by "unusual" BIOs. * Enforce the disk-timeout option also on meta-data IO operations * Implemented stable bitmap pages when we do a full write out of the bitmap http://oss.linbit.com/drbd/8.3/drbd-8.3.13.tar.gz http://git.drbd.org/gitweb.cgi?p=drbd-8.3.git;a=tag;h=refs/tags/drbd-8.3.13 http://www.linbit.com/support/drbd-8.3.13/ Best regards, Philipp -- : Dipl-Ing Philipp Reisner : LINBIT | Your Way to High Availability : Tel: +43-1-8178292-50, Fax: +43-1-8178292-82 : http://www.linbit.com DRBD(R) and LINBIT(R) are registered trademarks of LINBIT, Austria.