[dm-devel] multipath and HSG80

[christophe.varoqui at free.fr]

bump up the multipathd verbosity at compilation time,
be sure to run it while testing,
look the daemon.log for multipath callouts on events.

regards,
cvaroqui

Selon Nicola Ranaldo <ranaldo at unina.it>:

> > 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 at 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 at 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 at 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 at 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 at 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
>
> --
> dm-devel mailing list
> dm-devel at redhat.com
> https://www.redhat.com/mailman/listinfo/dm-devel
>


--