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authorVenky Shankar <vshankar@redhat.com>2015-05-21 19:55:02 +0530
committerVenky Shankar <vshankar@redhat.com>2015-05-30 21:14:10 -0700
commit85173e43faba9bbedd287a4103c129e289829e1f (patch)
treed1e5b7bc971eb97e88b53ad75ea56b628da12a09 /run-tests.sh
parent5f6876918e9c353bf0ebcd35707fb5cd8876c956 (diff)
features/bitrot: reimplement scrubbing frequency
This patch reimplments existing scrub-frequency mechanism used to schedule scrubber runs. Existing mechanism uses periodic sleeps (waking up periodically on minimum granularity) and performing a number of tracking checks based on counters and sleep times. This patch does away with all the nifty counters and uses timer-wheel to schedule scrub runs. Scheduling changes are peformed by merely calculating the new expiry time and calling mod_timer() [mod_timer_pending() in some cases] making the code more debuggable and easier to follow. This also introduces "hourly" scrubbing tunable as an aid for testing scrubbing during development/testing cycle. One could also implement on-demand scrubbing with ease: by invoking mod_timer() with an expiry of one (1) second, thereby scheduling a scrub run the very next second. Change-Id: I6c7c5f0c6c9f886bf574d88c04cde14b76e60a8b BUG: 1224647 Signed-off-by: Venky Shankar <vshankar@redhat.com> Reviewed-on: http://review.gluster.org/10902 Tested-by: Gluster Build System <jenkins@build.gluster.com> Tested-by: NetBSD Build System <jenkins@build.gluster.org>
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