Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hi, Does this address possible performances issues with stacked drbd ? Regards, Lee ----- Mail original ----- De: "Digimer" <lists at alteeve.ca> À: "Philipp Reisner" <philipp.reisner at linbit.com>, drbd-announce at lists.linbit.com Cc: "drbd-user" <drbd-user at lists.linbit.com> Envoyé: Jeudi 17 Décembre 2015 16:24:03 Objet: Re: [DRBD-user] drbd-8.4.7 & drbd-utils-8.9.5 Woohoo!! Thanks to all! On 17/12/15 04:09 AM, Philipp Reisner wrote: > Hi, > > with this release we fixed some performance regressions in 8.4 that > trigger only when DRBD is used as block storage target. (I.e. they > do not triggered when you have a file system on top of it). > > When it comes to new features a lot was done that DRBD works better > with thinly provisioned storage and SSDs (WRITE_SAME & resync). > Look for 'rs-discard-granularity' and 'discard-zeroes-if-aligned' > on the man-pages. > > drbd > 8.4.7-1 (api:genl1/proto:86-101) > ------- > * introduce WRITE_SAME support > * introduce discard-capable (or thinly allocated) device friendly resync > * improve latency on certain kernel versions and usage patterns > * improve latency of disk flushes with multiple volumes > * fix recovery handling of certain multiple error scenarios, > including possible deadlocks after certain multiple failure sequences > * introduce unfence-peer handler, > to close possible races if the replication link is flaky > * avoid potential spurious full resync by > * improve discard support, reliably zero-out/discard even with discard_zeroes_data=0 > * update wrapper defines for linux 4.3 > * fix latency regression introduced with 8.4.5 > protocol A was sometimes synchronous, C sometimes double-latency > * avoid potential deadlock during handshake > * avoid potential deadlock in disconnect during resync > with fencing resource-and-stonith > * allow IO during some bitmap bulk IO operations > * fix "endless" transfer log walk in protocol A > > http://oss.linbit.com/drbd/8.4/drbd-8.4.7-1.tar.gz > http://git.drbd.org/drbd-8.4.git/tag/refs/tags/drbd-8.4.7 > > > drbd-utils > 8.9.5 > -------- > * add support for new disk option 'rs-discard-granularity' (module v8.4.7) > * add support for new disk option 'discard-zeroes-if-aligned' (module v8.4.7) > * add support for v9 "path" commands > * doc improvements/corrections > * improvements to drbd ocf resource agent > and pacemaker "constraint based fencing" (crm-fence-peer.sh) > * drbd-overview improvements > > http://oss.linbit.com/drbd/drbd-utils-8.9.5.tar.gz > http://git.drbd.org/drbd-utils.git/tag/refs/tags/v8.9.5 > > > cheers, > Phil > _______________________________________________ > drbd-user mailing list > drbd-user at lists.linbit.com > http://lists.linbit.com/mailman/listinfo/drbd-user > -- Digimer Papers and Projects: https://alteeve.ca/w/ What if the cure for cancer is trapped in the mind of a person without access to education? _______________________________________________ drbd-user mailing list drbd-user at lists.linbit.com http://lists.linbit.com/mailman/listinfo/drbd-user