From: Christian Kujau li...@nerdbynature.de
Date: Fri, 5 Feb 2010 10:36:52 -0800 (PST)
When writing to a newly created btrfs (vanilla 2.6.33-rc6, sparc64) the
following messages are printed:
[28617.650231] Kernel unaligned access at TPC[10101f18]
btrfs_csum_final+0x38/0x60 [btrfs]
i created a array,
mkfs.btrfs -L TEST -m raid10 -d raid10 /dev/sda /dev/sdb /dev/sdc /dev/sdd
btrfs-show
Label: TEST uuid: 85aa9ac8-0089-4dd3-b8b2-3c0cbb96c924
Total devices 4 FS bytes used 28.00KB
devid3 size 931.51GB used 2.01GB path /dev/sdc
i've a 4 drive array connected via a PCIe SATA card.
per OS (opensuse) default, md RAID I/O performance was being limited by,
cat /proc/sys/dev/raid/speed_limit_min
1000
cat /proc/sys/dev/raid/speed_limit_max
20
changing,
echo dev.raid.speed_limit_min=10 /etc/sysctl.conf
On Fri, 5 Feb 2010 at 12:01, David Miller wrote:
Can you rerun your test with the following patch applied?
It will obtain more information for the btrfs developers.
Thanks, David! Here it is:
[ 1861.965178] Kernel unaligned access at TPC[10101f18]
btrfs_csum_final+0x38/0x60 [btrfs]
[
On Fri, 5 Feb 2010 at 21:32, David Miller wrote:
My debugging patch didn't work correctly.
Can you try using this one instead?
Hm, now it looks like this, but I don't know how it'd reveal more
information:
[ 210.707051] Kernel unaligned access at TPC[10101f18]
btrfs_csum_final+0x38/0x60
From: Christian Kujau li...@nerdbynature.de
Date: Fri, 5 Feb 2010 22:28:47 -0800 (PST)
Hm, now it looks like this, but I don't know how it'd reveal more
information:
[ 210.707051] Kernel unaligned access at TPC[10101f18]
btrfs_csum_final+0x38/0x60 [btrfs]
[ 210.802236] Caller
