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linux-yocto/Documentation/ABI/testing/sysfs-block-dm
Milan Broz 1d330ec6f9 dm: document sysfs entries 
Describe attributes provided by device-mapper in /sys/block.

Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-03-28 18:41:23 +01:00

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What: /sys/block/dm-/dm/name Date: January 2009 KernelVersion: 2.6.29 Contact: dm-devel@redhat.com Description: Device-mapper device name. Read-only string containing mapped device name. Users: util-linux, device-mapper udev rules

What: /sys/block/dm-/dm/uuid Date: January 2009 KernelVersion: 2.6.29 Contact: dm-devel@redhat.com Description: Device-mapper device UUID. Read-only string containing DM-UUID or empty string if DM-UUID is not set. Users: util-linux, device-mapper udev rules

What: /sys/block/dm-/dm/suspended Date: June 2009 KernelVersion: 2.6.31 Contact: dm-devel@redhat.com Description: Device-mapper device suspend state. Contains the value 1 while the device is suspended. Otherwise it contains 0. Read-only attribute. Users: util-linux, device-mapper udev rules