Oh, hah, your initial email had a very delayed message delivery...probably got stuck in the moderation queue. :) On Thu, Feb 12, 2015 at 8:26 AM, <warren.jeffs@xxxxxxxxxx> wrote: > I am running 0.87, In the end I just wiped the cluster and started again - it was quicker. > > Warren > > -----Original Message----- > From: Gregory Farnum [mailto:greg@xxxxxxxxxxx] > Sent: 12 February 2015 16:25 > To: Jeffs, Warren (STFC,RAL,ISIS) > Cc: ceph-users@xxxxxxxxxxxxxx > Subject: Re: CephFS removal. > > What version of Ceph are you running? It's varied by a bit. > > But I think you want to just turn off the MDS and run the "fail" > command — deactivate is actually the command for removing a logical MDS from the cluster, and you can't do that for a lone MDS because there's nobody to pass off the data to. I'll make a ticket to clarify this. When you've done that you should be able to delete it. > -Greg > > On Mon, Feb 2, 2015 at 1:40 AM, <warren.jeffs@xxxxxxxxxx> wrote: >> Hi All, >> >> >> >> Having a few problems removing cephfs file systems. >> >> >> >> I want to remove my current pools (was used for test data) – wiping >> all current data, and start a fresh file system on my current cluster. >> >> >> >> I have looked over the documentation but I can’t find anything on >> this. I have an object store pool, Which I don’t want to remove – but >> I’d like to remove the cephfs file system pools and remake them. >> >> >> >> >> >> My cephfs is called ‘data’. >> >> >> >> Running ceph fs delete data returns: Error EINVAL: all MDS daemons >> must be inactive before removing filesystem >> >> >> >> To make an MDS inactive I believe the command is: ceph mds deactivate >> 0 >> >> >> >> Which returns: telling mds.0 135.248.53.134:6809/16692 to deactivate >> >> >> >> Checking the status of the mds using: ceph mds stat returns: e105: >> 1/1/0 up {0=node2=up:stopping} >> >> >> >> This has been sitting at this status for the whole weekend with no >> change. I don’t have any clients connected currently. >> >> >> >> When trying to manually just remove the pools, it’s not allowed as >> there is a cephfs file system on them. >> >> >> >> I’m happy that all of the failsafe’s to stop someone removing a pool >> are all working correctly. >> >> >> >> If this is currently undoable. Is there a way to quickly wipe a cephfs >> filesystem – using RM from a kernel client is really slow. >> >> >> >> Many thanks >> >> >> >> Warren Jeffs >> >> >> _______________________________________________ >> ceph-users mailing list >> ceph-users@xxxxxxxxxxxxxx >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >> _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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