Mehmet: it doesn't look like wal is mentioned in the osd metadata. I see bluefs slow, bluestore bdev, and bluefs db mentioned only.
On Sun, Oct 28, 2018 at 1:48 PM <[email protected]> wrote: > IIRC there is a Command like > > Ceph osd Metadata > > Where you should be able to find Information like this > > Hab > - Mehmet > > Am 21. Oktober 2018 19:39:58 MESZ schrieb Robert Stanford < > [email protected]>: >> >> >> I did exactly this when creating my osds, and found that my total >> utilization is about the same as the sum of the utilization of the pools, >> plus (wal size * number osds). So it looks like my wals are actually >> sharing OSDs. But I'd like to be 100% sure... so I am seeking a way to >> find out >> >> On Sun, Oct 21, 2018 at 11:13 AM Serkan Çoban <[email protected]> >> wrote: >> >>> wal and db device will be same if you use just db path during osd >>> creation. i do not know how to verify this with ceph commands. >>> On Sun, Oct 21, 2018 at 4:17 PM Robert Stanford <[email protected]> >>> wrote: >>> > >>> > >>> > Thanks Serkan. I am using --path instead of --dev (dev won't work >>> because I'm using VGs/LVs). The output shows block and block.db, but >>> nothing about wal.db. How can I learn where my wal lives? >>> > >>> > >>> > >>> > >>> > On Sun, Oct 21, 2018 at 12:43 AM Serkan Çoban <[email protected]> >>> wrote: >>> >> >>> >> ceph-bluestore-tool can show you the disk labels. >>> >> ceph-bluestore-tool show-label --dev /dev/sda1 >>> >> On Sun, Oct 21, 2018 at 1:29 AM Robert Stanford < >>> [email protected]> wrote: >>> >> > >>> >> > >>> >> > An email from this list stated that the wal would be created in >>> the same place as the db, if the db were specified when running ceph-volume >>> lvm create, and the db were specified on that command line. I followed >>> those instructions and like the other person writing to this list today, I >>> was surprised to find that my cluster usage was higher than the total of >>> pools (higher by an amount the same as all my wal sizes on each node >>> combined). This leads me to think my wal actually is on the data disk and >>> not the ssd I specified the db should go to. >>> >> > >>> >> > How can I verify which disk the wal is on, from the command line? >>> I've searched the net and not come up with anything. >>> >> > >>> >> > Thanks and regards >>> >> > R >>> >> > >>> >> > _______________________________________________ >>> >> > ceph-users mailing list >>> >> > [email protected] >>> >> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >>> >> _______________________________________________ > ceph-users mailing list > [email protected] > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >
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