Feature #3078
support journal in 2nd partition on same disk as osd
0%
Associated revisions
ceph-disk-prepare, debian/control: Support external journals.
Previously, ceph-disk-* would only let you use a journal that was a
file inside the OSD data directory. With this, you can do:
ceph-disk-prepare /dev/sdb /dev/sdb
to put the journal as a second partition on the same disk as the OSD
data (might save some file system overhead), or, more interestingly:
ceph-disk-prepare /dev/sdb /dev/sdc
which makes it create a new partition on /dev/sdc to use as the
journal. Size of the partition is decided by $osd_journal_size.
/dev/sdc must be a GPT-format disk. Multiple OSDs may share the same
journal disk (using separate partitions); this way, a single fast SSD
can serve as journal for multiple spinning disks.
The second use case currently requires parted, so a Recommends: for
parted has been added to Debian packaging.
Closes: #3078
Closes: #3079
Signed-off-by: Tommi Virtanen <tv@inktank.com>
ceph-disk-prepare, debian/control: Support external journals.
Previously, ceph-disk-* would only let you use a journal that was a
file inside the OSD data directory. With this, you can do:
ceph-disk-prepare /dev/sdb /dev/sdb
to put the journal as a second partition on the same disk as the OSD
data (might save some file system overhead), or, more interestingly:
ceph-disk-prepare /dev/sdb /dev/sdc
which makes it create a new partition on /dev/sdc to use as the
journal. Size of the partition is decided by $osd_journal_size.
/dev/sdc must be a GPT-format disk. Multiple OSDs may share the same
journal disk (using separate partitions); this way, a single fast SSD
can serve as journal for multiple spinning disks.
The second use case currently requires parted, so a Recommends: for
parted has been added to Debian packaging.
Closes: #3078
Closes: #3079
Signed-off-by: Tommi Virtanen <tv@inktank.com>
History
#1 Updated by Anonymous over 11 years ago
- Status changed from New to Resolved
In master as commit 662c69e525fe8c88c65e8d5c597e29634ea3d521, pushed to branch for-stable-ext-journal as commit 68fe1c7ddb262e0f3ed41a0638ada361037e441a.