Bug#526406: (no subject)

[Mike Dresser <mdresser_l@router.windsormachine.com>]

echo 64 > /sys/block/sdX/queue/max_sectors_kb
echo 512 > /sys/block/sdX/queue/nr_requests
blockdev --setra 2048 /dev/sdX

is what i've set.  I'm running XFS on a 8x1TB raid5 on a 3ware 
9550SX-16ML, dual opteron 265 with 5gb ram.

df -h:

/dev/sdb1             6.4T  3.9T  2.6T  61% /files

df -ih:

/dev/sdb1               6.4G     20M    6.3G    1% /files

I backed down to 2.6.28.7, and the system has been stable for almost 2 
weeks... crashes in a day or two under 2.6.29.x   Sounds like some sort of 
regression in 2.6.29.x with XFS to me.

The system is a backuppc server, so there's a VERY heavy disk load 
overnight as it does backups, with millions of hardlinks on the 
filesystem.

Mike