[Xen-users] raid0_make_request bug: can't convert block across chunks or bigger than 64k 635 4

[Goswin von Brederlow <brederlo@xxxxxxxxxxxxxxxxxxxxxxxxxxx>]

Hi,

I have a problem exporting a raid1+0+lvm to a domU as physical
device with a 2.6.18 linux kernel and xen 3.0.3.

The dom0 has the following:

raid1    -   VG vg-s    -       LV test
sda2         md1                62.57 GB
sdb2

3 raid1     -     raid0   -     VG vg-a   - LV all
sdc+missing       md2           md8         894.27 GB
sdd+missing       md3
sde+missing       md4


And the xendomain config has:

disk = [ 'phy:vg-s/test,sda,w', 'phy:vg-a/all,sdb,w' ]

In domU I can use sda , sda3 and sdb just fine:

beo-119:~# dd if=/dev/sdb of=/dev/null bs=1M count=1024
1024+0 records in
1024+0 records out
1073741824 bytes transferred in 20.203053 seconds (53147503 bytes/sec)

But when I try to use sdb1 I get this in domU:

beo-119:~# dd if=/dev/sdb1 of=/dev/null bs=1M count=1024
dd: reading `/dev/sdb1': Input/output error
0+1 records in
0+1 records out
20480 bytes transferred in 0.119793 seconds (170962 bytes/sec)

acompanied by this in dom0:

[82095.652398] raid0_make_request bug: can't convert block across
chunks or bigger than 64k 507 4
[82095.652592] raid0_make_request bug: can't convert block across
chunks or bigger than 64k 635 4
[82095.652688] raid0_make_request bug: can't convert block across
chunks or bigger than 64k 763 4

In case it matters here is the partition table:

beo-119:~# sfdisk -d /dev/sdb
# partition table of /dev/sdb
unit: sectors

/dev/sdb1 : start=       63, size=1875411972, Id=83
/dev/sdb2 : start=        0, size=        0, Id= 0
/dev/sdb3 : start=        0, size=        0, Id= 0
/dev/sdb4 : start=        0, size=        0, Id= 0

Any ideas what is wrong?

MfG
        Goswin

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