On Fri, 9 May 2014, Indra Pramana wrote: > Hi Gandalf and Sage, > > Just would like to confirm if my steps below to replace a journal disk are > correct? Presuming the journal disk to be replaced is /dev/sdg and the two > affected OSDs using the disk as journals are osd.30 and osd.31: > > - ceph osd set noout > > - stop affected OSDs > > sudo stop ceph-osd id=30 > sudo stop ceph-osd id=31 > > - flush the journal for the affected OSDs > > ceph-osd -i 30 --flush-journal > ceph-osd -i 31 --flush-journal > > - dump journal partition scheme > > sgdisk --backup=/tmp/journal_table /dev/sdg > > - remove and replace the journal SSD (sdg) > > - verify new journal SSD is detected as /dev/sdg > > parted -l > > - restore the journal partition scheme > > sgdisk --restore-backup=/tmp/journal_table /dev/sdg > > - run mkjournal on the two affected osds > > ceph-osd -i 30 --mkjournal > ceph-osd -i 31 --mkjournal > > - start the OSDs > > sudo start ceph-osd id=30 > sudo start ceph-osd id=31 > > - ceph osd unset noout > > Looking forward to your reply, thank you. This looks correct to me! sage > > Cheers. > > > > On Fri, May 9, 2014 at 1:08 AM, Indra Pramana <indra at sg.or.id> wrote: > Hi Gandalf and Sage, > Many thanks! Will try this and share the outcome. > > Cheers. > > > On Fri, May 9, 2014 at 12:55 AM, Gandalf Corvotempesta > <gandalf.corvotempesta at gmail.com> wrote: > 2014-05-08 18:43 GMT+02:00 Indra Pramana <indra at sg.or.id>: > > Since we don't use ceph.conf to indicate the data and > journal paths, how can > > I recreate the journal partitions? > > 1. Dump the partition scheme: > sgdisk --backup=/tmp/journal_table /dev/sdd > > 2. Replace the journal disk device > > 3. Restore the old partition scheme: > sgdisk --restore-backup=/tmp/journal_table /dev/sdd > > 4. Run mkjournal for each affected OSDs: > > ceph-osd -i 1 --mkjournal > ceph-osd -i 4 --mkjournal > ceph-osd -i 6 --mkjournal > > (1, 4 and 6 are OSD id) > > > > >
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