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| author | Doug Ledford <dledford@redhat.com> | 2010-07-20 12:18:12 -0400 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2010-07-22 10:16:31 -0400 |
| commit | 2913d9df16123e2453eacd24c3b3e1029887c21c (patch) | |
| tree | cafc84aa3172c0fb540b9b46b83647752895197d | |
| parent | cfad27a93765529d72c49b9a39f736b194d31866 (diff) | |
| download | mdadm-2913d9df16123e2453eacd24c3b3e1029887c21c.tar.gz mdadm-2913d9df16123e2453eacd24c3b3e1029887c21c.tar.xz mdadm-2913d9df16123e2453eacd24c3b3e1029887c21c.zip | |
udev rules: add watch option
The watch option to udev tells udev to watch our mdadm device file for
close events and on a close it rechecks the device. This means that if,
for example, we use mdadm to --grow the array from a 4 disk to 5 disk
array, when mdadm closes the array, udev will re-read the superblock and
update its internal database with the new information. This can also be
used to cause udev to create new device special files if, for example, a
partitioning program is used to modify the partition table on the actual
md device and that program does not call the syscall to reread the
partition table.
Signed-off-by: Doug Ledford <dledford@redhat.com>
| -rw-r--r-- | udev-md-raid.rules | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/udev-md-raid.rules b/udev-md-raid.rules index da52058..f9607f3 100644 --- a/udev-md-raid.rules +++ b/udev-md-raid.rules @@ -32,6 +32,7 @@ ENV{DEVTYPE}=="partition", ENV{MD_DEVNAME}=="*[0-9]", SYMLINK+="md/$env{MD_DEVNA IMPORT{program}="/sbin/blkid -o udev -p $tempnode" OPTIONS+="link_priority=100" +OPTIONS+="watch" ENV{ID_FS_USAGE}=="filesystem|other|crypto", ENV{ID_FS_UUID_ENC}=="?*", SYMLINK+="disk/by-uuid/$env{ID_FS_UUID_ENC}" ENV{ID_FS_USAGE}=="filesystem|other", ENV{ID_FS_LABEL_ENC}=="?*", SYMLINK+="disk/by-label/$env{ID_FS_LABEL_ENC}" |