On Fri, 2015-11-27 at 17:16 +0800, Anand Jain wrote: > I understand as a user, a full md/lvm set of features are important > to begin operations using btrfs and we don't have it yet. I have to > blame it on the priority list. What's would be especially nice from the admin side, would be something like /proc/mdstat, which centrally gives information about the health of your RAID.
It can/should of course be more than just "OK" / "not OK"... information about which devices are in which state, whether a rebuild/reconstruction/scrub is going on, etc. pp. Maybe even details of properties like chunk sizes (as far as these apply to btrfs). Having a dedicated monitoring process... well nice to have, but something like mdstat is, always there, doesn't need special userland tools and can easily used by 3rd party stuff like Icinga/Nagios check_raid. I think the keywords here are human readable + parseable... so maybe even two files. Cheers, Chris.
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