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| author | Mike Christie <mchristi@redhat.com> | 2016-08-18 18:38:45 +0200 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2016-08-24 23:49:17 +0200 |
| commit | 0276dca6c1ecb9a665645ff573e70685a57759af (patch) | |
| tree | 36498244b9e8de7e3d51cc494d32d4979ae94191 /Documentation | |
| parent | 0d6d1e9c2e970c26e8a1ec4932ffffacec90e0b4 (diff) | |
| download | linux-0276dca6c1ecb9a665645ff573e70685a57759af.tar.gz linux-0276dca6c1ecb9a665645ff573e70685a57759af.tar.bz2 linux-0276dca6c1ecb9a665645ff573e70685a57759af.zip | |
rbd: add force close option
This adds a force close option, so we can force the unmapping
of a rbd device that is open. If a path/device is blacklisted, apps
like multipathd can map a new device and then unmap the old one.
The unmapping cleanup would then be handled by the generic hotunplug
code paths in multipahd like is done for iSCSI, FC/FCOE, SAS, etc.
Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-rbd | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-rbd b/Documentation/ABI/testing/sysfs-bus-rbd index 6dccbf82fcf4..f208ac58d613 100644 --- a/Documentation/ABI/testing/sysfs-bus-rbd +++ b/Documentation/ABI/testing/sysfs-bus-rbd @@ -6,7 +6,7 @@ Description: Being used for adding and removing rbd block devices. -Usage: <mon ip addr> <options> <pool name> <rbd image name> [snap name] +Usage: <mon ip addr> <options> <pool name> <rbd image name> [<snap name>] $ echo "192.168.0.1 name=admin rbd foo" > /sys/bus/rbd/add @@ -14,9 +14,13 @@ The snapshot name can be "-" or omitted to map the image read/write. A <dev-id> will be assigned for any registered block device. If snapshot is used, it will be mapped read-only. -Removal of a device: +Usage: <dev-id> [force] - $ echo <dev-id> > /sys/bus/rbd/remove + $ echo 2 > /sys/bus/rbd/remove + +Optional "force" argument which when passed will wait for running requests and +then unmap the image. Requests sent to the driver after initiating the removal +will be failed. (August 2016, since 4.9.) What: /sys/bus/rbd/add_single_major Date: December 2013 |