| commit | 861fc8bdf88071da0e3ac140a23e532ae791ea43 | |
| author | NeilBrown <neilb@suse.de> | |
| Fri, 7 May 2010 22:20:17 +0000 (8 08:20 +1000) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Mon, 5 Jul 2010 18:10:46 +0000 (5 11:10 -0700) | ||
| tree | f4bb2dbfb4fba704459a3fa843cffaa7aaf96d65 | treesnapshot (tar.gz zip) |
| parent | d067b0b81ddd913cfd3694cc819d86f1048b58bd | commitdiff |
md: Fix read balancing in RAID1 and RAID10 on drives > 2TB
commit af3a2cd6b8a479345786e7fe5e199ad2f6240e56 upstream.
read_balance uses a "unsigned long" for a sector number which
will get truncated beyond 2TB.
This will cause read-balancing to be non-optimal, and can cause
data to be read from the 'wrong' branch during a resync. This has a
very small chance of returning wrong data.
Reported-by: Jordan Russell <jr-list-2010@quo.to>
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
commit af3a2cd6b8a479345786e7fe5e199ad2f6240e56 upstream.
read_balance uses a "unsigned long" for a sector number which
will get truncated beyond 2TB.
This will cause read-balancing to be non-optimal, and can cause
data to be read from the 'wrong' branch during a resync. This has a
very small chance of returning wrong data.
Reported-by: Jordan Russell <jr-list-2010@quo.to>
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| drivers/md/raid1.c | diffblobblamehistory | |
| drivers/md/raid10.c | diffblobblamehistory |