kern/40569: Faild RAIDframe parity rewrite prevents system shutdown

[tron%zhadum.org.uk@localhost]

>Number:         40569
>Category:       kern
>Synopsis:       Faild RAIDframe parity rewrite prevents system shutdown
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Feb 06 23:05:00 +0000 2009
>Originator:     Matthias Scheler
>Release:        NetBSD 5.0_RC1 2009-02-03 sources
>Organization:
Matthias Scheler                                  http://zhadum.org.uk/
>Environment:
System: NetBSD colwyn.zhadum.org.uk 5.0_RC1 NetBSD 5.0_RC1 (COLWYN.64) #0: Fri 
Feb 6 17:59:15 GMT 2009 
tron%colwyn.zhadum.org.uk@localhost:/src/sys/compile/COLWYN.64 amd64
Architecture: x86_64
Machine: amd64
>Description:
One of the SATA disks in my server had a few write errors and was ejected
for a RAIDframe RAID 1 a few days ago. When I finally noticed this
morning I initiated a parity rewrite with "raidctl -R /dev/wd2e raid1".
The rebuild failed unfortunately:

raid1: initiating in-place reconstruction on column 0
wd2e: error writing fsbn 268435392 of 268435392-268435519 (wd2 bn 268435455; cn 
266305 tn 0 sn 15), retrying
[...]
wd2e: error writing fsbn 268435392 of 268435392-268435519 (wd2 bn 268435455; cn 
266305 tn 0 sn 15)
wd2: (id not found)
raid1: Recon write failed!
raid1: reconstruction failed.

I retried the parity rewrite but it was rejected by "raidctl" because of
an invalid I/O control. The reconstruction was not tried again. When
I later tried to shutdown the system (to check the cabling) the kernel
stopped while unmounting the file systems with this message:

unmounting file systems...raid1: Waiting for reconstruction to stop...

I had to remove the power hard at this point.

>How-To-Repeat:
Use "raidctl -R /dev/<x> raid<y>" and try to shutdown the system afterwards.

>Fix:
None known.