Make sure the kernel DM event model works (with "dmsetup wait")
If not, revert the Mike Christie patches from the udm patchset.
Ok... if i have understood...
i do
dmsetup -v wait volume1 0
and is sleeping...
sg_start /dev/sda 1
dmsetup wakes up and shows:
root@m2:/# dmsetup -v wait volume1 0
Name: volume1
State: ACTIVE
Tables present: LIVE
Open count: 2
Event number: 1
Major, minor: 254, 0
Number of targets: 1
while kern.log shows:
Nov 26 12:44:56 m2 kernel: Device sdd not ready.
Nov 26 12:44:56 m2 kernel: end_request: I/O error, dev sdd, sector 27280
all right, the write operation continues its job...
now i do:
dmsetup -v wait volume1 1
and is sleeping...
sg_start /dev/sdd 1
dmsetup wakes up and shows:
root@m2:/# dmsetup -v wait volume1 1
Name: volume1
State: ACTIVE
Tables present: LIVE
Open count: 2
Event number: 2
Major, minor: 254, 0
Number of targets: 1
while kern.log shows:
Message from syslogd@m2 at Fri Nov 26 12:47:21 2004 ...
m2 kernel: REISERFS: panic (device dm-0): journal-601, buffer write failed
Nov 26 12:47:21 m2 kernel: Device sda not ready.
Nov 26 12:47:21 m2 kernel: end_request: I/O error, dev sda, sector 23664
Nov 26 12:47:21 m2 kernel: Buffer I/O error on device dm-0, logical block
2958
Nov 26 12:47:21 m2 kernel: lost page write due to I/O error on dm-0
Nov 26 12:47:21 m2 kernel: Buffer I/O error on device dm-0, logical block
2959
Nov 26 12:47:21 m2 kernel: lost page write due to I/O error on dm-0
Nov 26 12:47:21 m2 kernel: Buffer I/O error on device dm-0, logical block
2960
Nov 26 12:47:21 m2 kernel: lost page write due to I/O error on dm-0
Nov 26 12:47:21 m2 kernel: Buffer I/O error on device dm-0, logical block
2961
Nov 26 12:47:21 m2 kernel: lost page write due to I/O error on dm-0
Nov 26 12:47:21 m2 kernel: REISERFS: panic (device dm-0): journal-601,
buffer write failed
now the case when i emulate the controller failure:
on hsg80 console i do a restart other...
dmsetup wakes up showing:
root@m2:/# dmsetup -v wait volume 0
Name: volume
State: ACTIVE
Tables present: LIVE
Open count: 2
Event number: 1
Major, minor: 254, 0
Number of targets: 1
while the kern.log shows:
Message from syslogd@m2 at Fri Nov 26 12:55:47 2004 ...
m2 kernel: REISERFS: panic (device dm-0): journal-601, buffer write failed
Nov 26 12:55:47 m2 kernel: Device sdd not ready.
Nov 26 12:55:47 m2 kernel: end_request: I/O error, dev sdd, sector 39208
Nov 26 12:55:47 m2 kernel: Device sda not ready.
Nov 26 12:55:47 m2 kernel: end_request: I/O error, dev sda, sector 39208
Nov 26 12:55:47 m2 kernel: Buffer I/O error on device dm-0, logical block
4901
Nov 26 12:55:47 m2 kernel: lost page write due to I/O error on dm-0
Nov 26 12:55:47 m2 kernel: Buffer I/O error on device dm-0, logical block
4902
Nov 26 12:55:47 m2 kernel: lost page write due to I/O error on dm-0
Nov 26 12:55:47 m2 kernel: Buffer I/O error on device dm-0, logical block
4903
Nov 26 12:55:47 m2 kernel: lost page write due to I/O error on dm-0
Nov 26 12:55:47 m2 kernel: Buffer I/O error on device dm-0, logical block
4904
Nov 26 12:55:47 m2 kernel: lost page write due to I/O error on dm-0
Nov 26 12:55:47 m2 kernel: REISERFS: panic (device dm-0): journal-601,
buffer write failed
wath's the next step?
thanks
Nicola Ranaldo
