Feature #9580: ceph-disk, ceph-osd: make journal [partition] creation conditional based on osd_objectstore - Ceph - Ceph

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Feature #9580

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ceph-disk, ceph-osd: make journal [partition] creation conditional based on osd_objectstore

Added by Sage Weil over 9 years ago. Updated about 9 years ago.

Status:

Resolved

Priority:

Normal

Assignee:

Haomai Wang

Category:

Target version:

v0.95

% Done:

Source:

Development

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Backport:

Reviewed:

Affected Versions:

Pull request ID:

Description

or example, with keyvaluestore-dev ceph-disk makes a journal parititon and general screws things up. see http://article.gmane.org/gmane.comp.file-systems.ceph.user/13507

1. teach ceph-diska bout each backends and whether it needs a journal
2. add a new option about whether the journal is created (blah)
3. add a ceph-osd option to query whther the backend needs a journal, which calls into ObjectStore to ask.

3 makes the most sense IMO.

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Updated by Mark Kirkwood over 9 years ago

While we are thinking about this, note that some of the keyvalue backends have facility to have their "wal" aka journal file(s) located somewhere else (only Rocksdb AFAIK). Would be good if we get this covered here too!

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Updated by Sage Weil over 9 years ago

Mark Kirkwood wrote:

While we are thinking about this, note that some of the keyvalue backends have facility to have their "wal" aka journal file(s) located somewhere else (only Rocksdb AFAIK). Would be good if we get this covered here too!

Hmm, I assume they are files, though? I don't think it would map directly onto the current 'journal device' symlink (to a preallocated file or raw partition).

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