diff options
author | Milos Vyletel <milos.vyletel@sde.cz> | 2013-03-12 05:04:40 (GMT) |
---|---|---|
committer | Rusty Russell <rusty@rustcorp.com.au> | 2013-03-12 05:14:55 (GMT) |
commit | 9d9598b81c5c05495009e81ac0508ec8d1558015 (patch) | |
tree | bd4b367e3332908f0a1111e743efce3006e9ed43 /Documentation/virtual | |
parent | ba06d1e1d3350a38476ea6b7655ba7c047baad67 (diff) | |
download | linux-9d9598b81c5c05495009e81ac0508ec8d1558015.tar.xz |
virtio-blk: emit udev event when device is resized
When virtio-blk device is resized from host (using block_resize from QEMU) emit
KOBJ_CHANGE uevent to notify guest about such change. This allows user to have
custom udev rules which would take whatever action if such event occurs. As a
proof of concept I've created simple udev rule that automatically resize
filesystem on virtio-blk device.
ACTION=="change", KERNEL=="vd*", \
ENV{RESIZE}=="1", \
ENV{ID_FS_TYPE}=="ext[3-4]", \
RUN+="/sbin/resize2fs /dev/%k"
ACTION=="change", KERNEL=="vd*", \
ENV{RESIZE}=="1", \
ENV{ID_FS_TYPE}=="LVM2_member", \
RUN+="/sbin/pvresize /dev/%k"
Signed-off-by: Milos Vyletel <milos.vyletel@sde.cz>
Tested-by: Asias He <asias@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (minor simplification)
Diffstat (limited to 'Documentation/virtual')
0 files changed, 0 insertions, 0 deletions