You can always just go to /var/lib/ceph/osd/ceph-{osd-num}/ and look at
where the symlinks for block and block.wal point to.On Mon, Oct 22, 2018 at 12:29 PM Robert Stanford <rstanford8...@gmail.com> wrote: > > That's what they say, however I did exactly this and my cluster > utilization is higher than the total pool utilization by about the number > of OSDs * wal size. I want to verify that the wal is on the SSDs too but > I've asked here and no one seems to know a way to verify this. Do you? > > Thank you, R > > On Mon, Oct 22, 2018 at 5:22 AM Maged Mokhtar <mmokh...@petasan.org> > wrote: > >> >> If you specify a db on ssd and data on hdd and not explicitly specify a >> device for wal, wal will be placed on same ssd partition with db. >> Placing only wal on ssd or creating separate devices for wal and db are >> less common setups. >> >> /Maged >> >> On 22/10/18 09:03, Fyodor Ustinov wrote: >> > Hi! >> > >> > For sharing SSD between WAL and DB what should be placed on SSD? WAL or >> DB? >> > >> > ----- Original Message ----- >> > From: "Maged Mokhtar" <mmokh...@petasan.org> >> > To: "ceph-users" <ceph-users@lists.ceph.com> >> > Sent: Saturday, 20 October, 2018 20:05:44 >> > Subject: Re: [ceph-users] Drive for Wal and Db >> > >> > On 20/10/18 18:57, Robert Stanford wrote: >> > >> > >> > >> > >> > Our OSDs are BlueStore and are on regular hard drives. Each OSD has a >> partition on an SSD for its DB. Wal is on the regular hard drives. Should I >> move the wal to share the SSD with the DB? >> > >> > Regards >> > R >> > >> > >> > _______________________________________________ >> > ceph-users mailing list [ mailto:ceph-users@lists.ceph.com | >> ceph-users@lists.ceph.com ] [ >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com | >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com ] >> > >> > you should put wal on the faster device, wal and db could share the >> same ssd partition, >> > >> > Maged >> > >> > _______________________________________________ >> > ceph-users mailing list >> > ceph-users@lists.ceph.com >> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >> > _______________________________________________ >> > ceph-users mailing list >> > ceph-users@lists.ceph.com >> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >> >> _______________________________________________ >> ceph-users mailing list >> ceph-users@lists.ceph.com >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >> > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >
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