Hi, neither do you need a filesystem on the partition, nor does it have to be mounted. You can link the journal against the raw partition.
Best regards, Kurt Snider, Tim schrieb: > Sage - > The journal device needs a file system created does that device need to be > mounted? > Tim > > -----Original Message----- > From: Sage Weil [mailto:[email protected]] > Sent: Thursday, October 17, 2013 11:02 AM > To: Snider, Tim > Cc: [email protected] > Subject: RE: [ceph-users] changing from default journals to external journals > > On Thu, 17 Oct 2013, Snider, Tim wrote: >> /var/lib/ceph/osd/ceph-NNN/journal is a "real" file on my system: >> ls -l /var/lib/ceph/osd/ceph-0/journal >> -rw-r--r-- 1 root root 1073741824 Oct 17 06:47 >> /var/lib/ceph/osd/ceph-0/journal >> >> Any problems with my proposed added steps (3 - 5)? >> >> 1. stop a ceph-osd daemon >> 2. ceph-osd --flush-journal -i NNN >> 3. (+) cp /var/lib/ceph/osd/ceph-NNN/journal >> /var/lib/ceph/osd/ceph-NNN/journal.saved >> 4. (+) create a new empty journal file: >> touch /mount/sdzNNN/journal >> 5. (+) Create the symbolic link for Ceph: >> ln -s /mount/sdzNNN/journal >> var/lib/ceph/osd/ceph-NNN/journal > > 3. mv journal journal.old > 4. ln -s /dev/whatever journal > > (you're better off using a raw partition or other block device than a > file.) or, > > 4. touch /new/path > 5. ln -s /other/path journal > >> 6. ceph-osd --mkjournal -i NNN >> 7. start ceph-osd >> >> Tim >> -----Original Message----- >> From: Sage Weil [mailto:[email protected]] >> Sent: Wednesday, October 16, 2013 5:02 PM >> To: Snider, Tim >> Cc: [email protected] >> Subject: Re: [ceph-users] changing from default journals to external >> journals >> >> On Wed, 16 Oct 2013, Snider, Tim wrote: >>> I configured my cluster using the default journal location for my >>> osds. Can I migrate the default journals to explicit separate >>> devices without a complete cluster teardown and reinstallation? How? >> - stop a ceph-osd daemon, then >> - ceph-osd --flush-journal -i NNN >> - set/adjust the journal symlink at /var/lib/ceph/osd/ceph-NNN/journal to >> point wherever you want >> - ceph-osd --mkjournal -i NNN >> - start ceph-osd >> >> This won't set up the udev magic on the journal device, but that doesn't >> really matter if you're not hotplugging devices. >> >> sage >> >> > _______________________________________________ > ceph-users mailing list > [email protected] > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
smime.p7s
Description: S/MIME Cryptographic Signature
_______________________________________________ ceph-users mailing list [email protected] http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
