summaryrefslogtreecommitdiffstats
path: root/Documentation/device-mapper
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2015-11-04 21:12:47 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-11-04 21:12:47 -0800
commitac322de6bf5416cb145b58599297b8be73cd86ac (patch)
tree1a1be9f8b9241159fb4cde14a548eba9a4155b28 /Documentation/device-mapper
parentccf21b69a83afaee4d5499e0d03eacf23946e08c (diff)
parent339421def582abb14c2217aa8c8f28bb2e299174 (diff)
downloadlinux-ac322de6bf5416cb145b58599297b8be73cd86ac.tar.bz2
Merge tag 'md/4.4' of git://neil.brown.name/md
Pull md updates from Neil Brown: "Two major components to this update. 1) The clustered-raid1 support from SUSE is nearly complete. There are a few outstanding issues being worked on. Maybe half a dozen patches will bring this to a usable state. 2) The first stage of journalled-raid5 support from Facebook makes an appearance. With a journal device configured (typically NVRAM or SSD), the "RAID5 write hole" should be closed - a crash during degraded operations cannot result in data corruption. The next stage will be to use the journal as a write-behind cache so that latency can be reduced and in some cases throughput increased by performing more full-stripe writes. * tag 'md/4.4' of git://neil.brown.name/md: (66 commits) MD: when RAID journal is missing/faulty, block RESTART_ARRAY_RW MD: set journal disk ->raid_disk MD: kick out journal disk if it's not fresh raid5-cache: start raid5 readonly if journal is missing MD: add new bit to indicate raid array with journal raid5-cache: IO error handling raid5: journal disk can't be removed raid5-cache: add trim support for log MD: fix info output for journal disk raid5-cache: use bio chaining raid5-cache: small log->seq cleanup raid5-cache: new helper: r5_reserve_log_entry raid5-cache: inline r5l_alloc_io_unit into r5l_new_meta raid5-cache: take rdev->data_offset into account early on raid5-cache: refactor bio allocation raid5-cache: clean up r5l_get_meta raid5-cache: simplify state machine when caches flushes are not needed raid5-cache: factor out a helper to run all stripes for an I/O unit raid5-cache: rename flushed_ios to finished_ios raid5-cache: free I/O units earlier ...
Diffstat (limited to 'Documentation/device-mapper')
0 files changed, 0 insertions, 0 deletions