diff options
author | NeilBrown <neilb@suse.de> | 2006-03-27 01:18:09 -0800 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-27 08:45:01 -0800 |
commit | ccfcc3c10b2a5cb8fd3c918199a4ff904fc6fb3e (patch) | |
tree | 0c86fe6ba0f0bafd76f86f81b7425d6d497664aa /drivers/base | |
parent | 7ecaa1e6a1ad69862e9980b6c777e11f26c4782d (diff) |
[PATCH] md: Core of raid5 resize process
This patch provides the core of the resize/expand process.
sync_request notices if a 'reshape' is happening and acts accordingly.
It allocated new stripe_heads for the next chunk-wide-stripe in the target
geometry, marking them STRIPE_EXPANDING.
Then it finds which stripe heads in the old geometry can provide data needed
by these and marks them STRIPE_EXPAND_SOURCE. This causes stripe_handle to
read all blocks on those stripes.
Once all blocks on a STRIPE_EXPAND_SOURCE stripe_head are read, any that are
needed are copied into the corresponding STRIPE_EXPANDING stripe_head. Once a
STRIPE_EXPANDING stripe_head is full, it is marks STRIPE_EXPAND_READY and then
is written out and released.
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/base')
0 files changed, 0 insertions, 0 deletions