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author | Peter Rajnoha <prajnoha@redhat.com> | 2012-01-11 12:34:44 +0000 |
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committer | Peter Rajnoha <prajnoha@redhat.com> | 2012-01-11 12:34:44 +0000 |
commit | 17c3e42b21f816a2c6d88b9c0c11e40bae28af5d (patch) | |
tree | 3805a6b3066b0f25b419b1e88d8bb1e601abc5d7 /tools/dmsetup.c | |
parent | 2e5ff5d11c362468060df519598f6790f0491ffd (diff) | |
download | lvm2-17c3e42b21f816a2c6d88b9c0c11e40bae28af5d.tar.gz lvm2-17c3e42b21f816a2c6d88b9c0c11e40bae28af5d.tar.xz lvm2-17c3e42b21f816a2c6d88b9c0c11e40bae28af5d.zip |
Add dm_device_get_name to get map name or block device name for given devno.
This is accomplished by reading associated sysfs information. For a dm device,
this is /sys/dev/block/major:minor/dm/name (supported in kernel version >= 2.6.29,
for older kernels, the behaviour is the same as for non-dm devices).
For a non-dm device, this is a readlink on /sys/dev/block/major:minor, e.g.
/sys/dev/block/253:0 --> ../../devices/virtual/block/dm-0.
The last component of the path is a proper kernel name (block device name).
One can request to read only kernel names by setting the 'prefer_kernel_name'
argument if needed.
Diffstat (limited to 'tools/dmsetup.c')
0 files changed, 0 insertions, 0 deletions