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| author | NeilBrown <neilb@suse.de> | 2006-01-06 00:20:23 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-06 08:34:04 -0800 |
| commit | cf30a473a02901fe4db37abc0b0fa26dd5ba3f72 (patch) | |
| tree | 3fa967963e174913826943f0f98e63c60032d07d /include/linux/raid | |
| parent | 69382e85371c232df71524137a806b9c210ec021 (diff) | |
| download | linux-3.10-cf30a473a02901fe4db37abc0b0fa26dd5ba3f72.tar.gz linux-3.10-cf30a473a02901fe4db37abc0b0fa26dd5ba3f72.tar.bz2 linux-3.10-cf30a473a02901fe4db37abc0b0fa26dd5ba3f72.zip | |
[PATCH] md: handle errors when read-only
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 'include/linux/raid')
| -rw-r--r-- | include/linux/raid/raid1.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/raid/raid1.h b/include/linux/raid/raid1.h index cbe4238d3f9..9d5494aaac0 100644 --- a/include/linux/raid/raid1.h +++ b/include/linux/raid/raid1.h @@ -109,6 +109,13 @@ struct r1bio_s { /* DO NOT PUT ANY NEW FIELDS HERE - bios array is contiguously alloced*/ }; +/* when we get a read error on a read-only array, we redirect to another + * device without failing the first device, or trying to over-write to + * correct the read error. To keep track of bad blocks on a per-bio + * level, we store IO_BLOCKED in the appropriate 'bios' pointer + */ +#define IO_BLOCKED ((struct bio*)1) + /* bits for r1bio.state */ #define R1BIO_Uptodate 0 #define R1BIO_IsSync 1 |