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authorMike Christie <mchristi@redhat.com>2016-08-18 18:38:45 +0200
committerIlya Dryomov <idryomov@gmail.com>2016-08-24 23:49:17 +0200
commit0276dca6c1ecb9a665645ff573e70685a57759af (patch)
tree36498244b9e8de7e3d51cc494d32d4979ae94191 /Documentation/ABI
parent0d6d1e9c2e970c26e8a1ec4932ffffacec90e0b4 (diff)
downloadlinux-0276dca6c1ecb9a665645ff573e70685a57759af.tar.bz2
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/ABI')
-rw-r--r--Documentation/ABI/testing/sysfs-bus-rbd10
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