Hi Christian,
Christian Borntraeger wrote:
Am Freitag, 29. August 2008 schrieb Hannes Reinecke:
Hmm. Works here, using an unpatched kvm-73.
Which version did you use?
I use the s390 userspace prototype kuli which uses an virtio transport similar
to lguest.
I retried and it seems to race. Most of the time it works fine, but sometimes
sdparm hangs. I will have a 2nd look.
sysrq-t gives me the following trace:
Call Trace:
([<040000000755bc78>] 0x40000000755bc78)
sdparm D 000000000043659e 0 2493 1
000000000012004a 000000000744f740 000000000744f778 001896469fd23785
000000000744f778 00000000009e5500 000000000043f230 0000000000120130
000000000744f778 0000000006d39400 0000000006d39f80 0000000000000001
00000000009e6f00 00000000076bf8e8 000000000744f7c8 0000000007530670
000000000043f610 0000000000435e66 000000000744f7c8 000000000744f868
Call Trace:
([<0000000000435e66>] schedule+0x32e/0x7ec)
[<000000000043659e>] schedule_timeout+0xba/0x10c
[<00000000004358da>] wait_for_common+0xbe/0x1a8
[<000000000027ec3e>] blk_execute_rq+0x86/0xc4
[<0000000000282768>] sg_io+0x1a4/0x360
[<0000000000282f8c>] scsi_cmd_ioctl+0x2bc/0x3f0
[<00000000002c3108>] virtblk_ioctl+0x44/0x58
[<000000000027ff18>] blkdev_driver_ioctl+0x98/0xa4
[<000000000027ffd8>] blkdev_ioctl+0xb4/0x7f8
[<00000000001e1572>] block_ioctl+0x3a/0x48
[<00000000001bca0a>] vfs_ioctl+0x52/0xdc
[<00000000001bcb0a>] do_vfs_ioctl+0x76/0x350
[<00000000001bce6e>] sys_ioctl+0x8a/0xa0
[<000000000011282c>] sysc_tracego+0xe/0x14
[<0000020000114286>] 0x20000114286
I'm tempted to say 'not my fault'; the submitted SCSI request on
the _host_ hangs and doesn't come back.
Looks more like a SCSI problem on the host ...
Cheers,
Hannes
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Dr. Hannes Reinecke zSeries & Storage
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