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doc/ceph-bluestore-tool: add help for migrate and new DB/WAL commands.

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Signed-off-by: Igor Fedotov <ifedotov@suse.com>
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Igor Fedotov 2018-10-24 17:10:51 +03:00
parent 86106ecb00
commit f5c12ee63f
1 changed files with 31 additions and 0 deletions
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doc/man/8/ceph-bluestore-tool.rst
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@ -19,6 +19,9 @@ Synopsis
| **ceph-bluestore-tool** show-label --dev *device* ...
| **ceph-bluestore-tool** prime-osd-dir --dev *device* --path *osd path*
| **ceph-bluestore-tool** bluefs-export --path *osd path* --out-dir *dir*
| **ceph-bluestore-tool** bluefs-bdev-new-wal --path *osd path* --dev-target *new-device*
| **ceph-bluestore-tool** bluefs-bdev-new-db --path *osd path* --dev-target *new-device*
| **ceph-bluestore-tool** bluefs-bdev-migrate --path *osd path* --dev-target *new-device* --devs-source *device1* [--devs-source *device2*]
Description
@ -54,6 +57,26 @@ Commands
Instruct BlueFS to check the size of its block devices and, if they have expanded, make use of the additional space.
:command:`bluefs-bdev-new-wal` --path *osd path* --dev-target *new-device*
Adds WAL device to BlueFS, fails if WAL device already exists.
:command:`bluefs-bdev-new-db` --path *osd path* --dev-target *new-device*
Adds DB device to BlueFS, fails if DB device already exists.
:command:`bluefs-bdev-migrate` --dev-target *new-device* --devs-source *device1* [--devs-source *device2*]
Moves BlueFS data from source device(s) to the target one, source devices
(except the main one) are removed on success. Target device can be both
already attached or new device. In the latter case it's added to OSD
replacing one of the source devices. Following replacement rules apply
(in the order of precedence, stop on the first match):
- if source list has DB volume - target device replaces it.
- if source list has WAL volume - target device replace it.
- if source list has slow volume only - operation isn't permitted, requires explicit allocation via new-db/new-wal command.
:command:`show-label` --dev *device* [...]
Show device label(s).
@ -65,6 +88,14 @@ Options
Add *device* to the list of devices to consider
.. option:: --devs-source *device*
Add *device* to the list of devices to consider as sources for migrate operation
.. option:: --dev-target *device*
Specify target *device* migrate operation or device to add for adding new DB/WAL.
.. option:: --path *osd path*
Specify an osd path. In most cases, the device list is inferred from the symlinks present in *osd path*. This is usually simpler than explicitly specifying the device(s) with --dev.