On Fri, Aug 31, 2012 at 11:58 PM, Andrew Thompson <andrewkt@xxxxxxxxxxx> wrote: > Looking at old archives, I found this thread which shows that to mount a > pool as cephfs, it needs to be added to mds: > > http://permalink.gmane.org/gmane.comp.file-systems.ceph.devel/5685 > > I started a `rados cppool data tempstore` a couple hours ago. When it > finishes, will I need to remove the current pool from mds somehow(other than > just deleting the pool)? > > Is `ceph mds add_data_pool <poolname>` still required? (It's not listed in > `ceph --help`.) If the pool you are trying to grow pg_num for really is a CephFS data pool, I fear a "rados cppool" is nowhere near enough to perform a migration. My understanding is that each of the inodes stored in cephfs/on ceph-mds'es knows what pool the file data resides in; you shoveling the objects into another pool with "rados cppool" doesn't change these pointers, removing the old pool will just break the filesystem. Before we go too far down this road: is your problem pool *really* being use as a cephfs data pool? Based on how it's not named "data" and you're just now asking about "ceph mds add_data_pool", it seems that's not likely.. -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
