Heinz Mauelshagen 6e53636fe8 dm raid: add raid4/5/6 journal write-back support via journal_mode option ... Commit 63c32ed4af ("dm raid: add raid4/5/6 journaling support") added journal support to close the raid4/5/6 "write hole" -- in terms of writethrough caching. Introduce a "journal_mode" feature and use the new r5c_journal_mode_set() API to add support for switching the journal device's cache mode between write-through (the current default) and write-back. NOTE: If the journal device is not layered on resilent storage and it fails, write-through mode will cause the "write hole" to reoccur. But if the journal fails while in write-back mode it will cause data loss for any dirty cache entries unless resilent storage is used for the journal. Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>		2017-03-27 12:08:07 -04:00
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cache-policies.txt
cache.txt	dm cache metadata: add "metadata2" feature	2017-02-16 13:12:47 -05:00
delay.txt	Documentation/device-mapper: s/getsize/getsz/	2016-12-14 10:54:27 +01:00
dm-crypt.txt	dm crypt: optionally support larger encryption sector size	2017-03-24 15:54:21 -04:00
dm-flakey.txt
dm-integrity.txt	dm integrity: add recovery mode	2017-03-24 15:54:23 -04:00
dm-io.txt
dm-log.txt
dm-queue-length.txt
dm-raid.txt	dm raid: add raid4/5/6 journal write-back support via journal_mode option	2017-03-27 12:08:07 -04:00
dm-service-time.txt
dm-uevent.txt
era.txt
kcopyd.txt
linear.txt	Documentation/device-mapper: s/getsize/getsz/	2016-12-14 10:54:27 +01:00
log-writes.txt
persistent-data.txt
snapshot.txt
statistics.txt
striped.txt	Documentation/device-mapper: s/getsize/getsz/	2016-12-14 10:54:27 +01:00
switch.txt	Documentation/device-mapper: s/getsize/getsz/	2016-12-14 10:54:27 +01:00
thin-provisioning.txt
verity.txt
zero.txt