With this patchset, we start to check if the upcoming requests for ploop have REQ_FUA flag. If the flag is present, the behaviour is the same as before: - IO waits for BAT update - BAT updates submit immediately - every BAT update triggers flush If the flag is absent: - IO does not wait for BAT update - all BAT updates are periodically submitted in a batch - BAT update does not trigger flush
New parameter with metadata submit delay can be specified when setting up ploop table Andrey Zhadchenko (3): dm-ploop: do not flush BAT writes if request was not FUA dm-ploop: do not wait for BAT update for non-FUA requests dm-ploop: add delay for metadata writeback drivers/md/dm-ploop-bat.c | 1 + drivers/md/dm-ploop-map.c | 52 +++++++++++++++++++++++++++++++----- drivers/md/dm-ploop-target.c | 11 ++++++++ drivers/md/dm-ploop.h | 8 ++++++ 4 files changed, 65 insertions(+), 7 deletions(-) -- 2.39.3 _______________________________________________ Devel mailing list Devel@openvz.org https://lists.openvz.org/mailman/listinfo/devel
