Le Wed, 15 Nov 2017 19:46:48 +0000, Shawn Edwards <lesser.evil@xxxxxxxxx> a écrit : > On Wed, Nov 15, 2017, 11:07 David Turner <drakonstein@xxxxxxxxx> > wrote: > > > I'm not going to lie. This makes me dislike Bluestore quite a > > bit. Using multiple OSDs to an SSD journal allowed for you to > > monitor the write durability of the SSD and replace it without > > having to out and re-add all of the OSDs on the device. Having to > > now out and backfill back onto the HDDs is awful and would have > > made a time when I realized that 20 journal SSDs all ran low on > > writes at the same time nearly impossible to recover from. > > > > Flushing journals, replacing SSDs, and bringing it all back online > > was a slick process. Formatting the HDDs and backfilling back onto > > the same disks sounds like a big regression. A process to migrate > > the WAL and DB onto the HDD and then back off to a new device would > > be very helpful. > > > > On Wed, Nov 15, 2017 at 10:51 AM Mario Giammarco > > <mgiammarco@xxxxxxxxx> wrote: > > > >> It seems it is not possible. I recreated the OSD > >> > >> 2017-11-12 17:44 GMT+01:00 Shawn Edwards <lesser.evil@xxxxxxxxx>: > >> > >>> I've created some Bluestore OSD with all data (wal, db, and data) > >>> all on the same rotating disk. I would like to now move the wal > >>> and db onto an nvme disk. Is that possible without re-creating > >>> the OSD? > >>> > >>> _______________________________________________ > >>> 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 > > > > > This. Exactly this. Not being able to move the .db and .wal data on > and off the main storage disk on Bluestore is a regression. > Hello, What stops you from dd'ing the DB/WAL's partitions on another disk and updating the symlinks in the OSD's mount point under /var/lib/ceph/osd? _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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