git: Disable HAMMER live dedup, mark as experimental
thomas.nikolajsen at mail.dk
Thu Feb 2 14:33:36 PST 2012
>Author: FranÃ§ois Tigeot <ftigeot at wolfpond.org>
>Date: Wed Jan 18 10:36:56 2012 +0100
> Disable HAMMER live dedup, mark as experimental
> * Comment out mentions to it in the hammer(8) manpage
> * Live-dedup is a relatively new feature that has not undergone
> extensive testing.
> * It may have some issues with HAMMER bigblocks, we do not want
> users to run it on production machines yet.
>-SYSCTL_INT(_vfs_hammer, OID_AUTO, live_dedup, CTLFLAG_RW,
>- &hammer_live_dedup, 0, "Enable live dedup");
>+SYSCTL_INT(_vfs_hammer, OID_AUTO, live_dedup, CTLFLAG_RD,
>+ &hammer_live_dedup, 0, "Enable live dedup (experimental)");
Any special reason to turn vfs.hammer.live_dedup sysctl to R/O?
(I haven't noticed a tunable to turn it on; only way is to change code)
Do we have any known problem with live_dedup?
(I haven't noticed a bug on this in our bug handling system)
Live_dedup was off by default;
which seemed fine for an experimental feature.
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