diff options
| author | Neil Brown <neilb@cse.unsw.edu.au> | 2004-06-04 20:56:39 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2004-06-04 20:56:39 -0700 |
| commit | f23b262d654bdf04a8d18b7f1d909930cc5695d6 (patch) | |
| tree | e34d8eb3ae9b50b1b6431b1b96f483539757b964 /include/linux/raid | |
| parent | c144ee55581b60759c7a04633b2f34b0779c3dbe (diff) | |
[PATCH] md: allow md arrays to be resized if devices are large enough.
It is possible to have raid1/4/5/6 arrays that do not use all the space on the
drive. This can be done explicitly, or can happen info you, one by one,
replace all the drives with larger devices.
This patch extends the "SET_ARRAY_INFO" ioctl (which previously invalid on
active arrays) allow some attributes of the array to be changed and implements
changing of the "size" attribute.
"size" is the amount of each device that is actually used. If "size" is
increased, the new space will immediately be "resynced".
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/raid')
| -rw-r--r-- | include/linux/raid/md_k.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h index b2ac5492ed23..1af736b37d0b 100644 --- a/include/linux/raid/md_k.h +++ b/include/linux/raid/md_k.h @@ -279,6 +279,7 @@ struct mdk_personality_s int (*hot_remove_disk) (mddev_t *mddev, int number); int (*spare_active) (mddev_t *mddev); int (*sync_request)(mddev_t *mddev, sector_t sector_nr, int go_faster); + int (*resize) (mddev_t *mddev, sector_t sectors); }; |