diff options
| author | NeilBrown <neilb@suse.de> | 2011-07-28 11:39:22 +1000 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2011-07-28 11:39:22 +1000 |
| commit | bc2607f393bd4fb844c1886a02af929ca0372056 (patch) | |
| tree | 45c7f9c538b5e196e389454286771f3beb8628ba /drivers/md/raid5.h | |
| parent | 7f0da59bdc2f65795a57009d78f7753d3aea1de3 (diff) | |
| download | lwn-bc2607f393bd4fb844c1886a02af929ca0372056.tar.gz lwn-bc2607f393bd4fb844c1886a02af929ca0372056.zip | |
md/raid5: write errors should be recorded as bad blocks if possible.
When a write error is detected, don't mark the device as failed
immediately but rather record the fact for handle_stripe to deal with.
Handle_stripe then attempts to record a bad block. Only if that fails
does the device get marked as faulty.
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers/md/raid5.h')
| -rw-r--r-- | drivers/md/raid5.h | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/drivers/md/raid5.h b/drivers/md/raid5.h index c5429d123636..8620cb67ae39 100644 --- a/drivers/md/raid5.h +++ b/drivers/md/raid5.h @@ -249,6 +249,7 @@ struct stripe_head_state { struct bio *return_bi; mdk_rdev_t *blocked_rdev; + int handle_bad_blocks; }; /* Flags */ @@ -264,14 +265,15 @@ struct stripe_head_state { #define R5_ReWrite 9 /* have tried to over-write the readerror */ #define R5_Expanded 10 /* This block now has post-expand data */ -#define R5_Wantcompute 11 /* compute_block in progress treat as - * uptodate - */ -#define R5_Wantfill 12 /* dev->toread contains a bio that needs - * filling - */ -#define R5_Wantdrain 13 /* dev->towrite needs to be drained */ -#define R5_WantFUA 14 /* Write should be FUA */ +#define R5_Wantcompute 11 /* compute_block in progress treat as + * uptodate + */ +#define R5_Wantfill 12 /* dev->toread contains a bio that needs + * filling + */ +#define R5_Wantdrain 13 /* dev->towrite needs to be drained */ +#define R5_WantFUA 14 /* Write should be FUA */ +#define R5_WriteError 15 /* got a write error - need to record it */ /* * Write method */ |