> -----Original Message----- > From: dm-devel-bounces@xxxxxxxxxx [mailto:dm-devel-bounces@xxxxxxxxxx] > On Behalf Of Charles Slivkoff > Sent: Wednesday, March 02, 2011 12:52 PM > To: dm-devel@xxxxxxxxxx > Subject: Re: Dell MD3200 - sd: Current: sense key: Illegal > Request ASC=0x94 ASCQ=0x1ASC=0x94 ASCQ=0x1 > > Hello Babu. Thanks for responding. > > > You said "The array is split into 2 virtual disk, each > > assigned to one of the RAID controllers". Did you mean you > > redistributed the two luns(one is owned by controller A and one by > > controller B)? > > Yes. I have assigned 1 LUN to each of the controllers. > > > It appears that your luns are moving back and forth between two > > controllers.. You can try setting failback to manual(failback > > manual). This is not a solution but to understand the problem. > > I changed to "failback manual" in /etc/multipath.conf and rebooted. I'm > not sure if the reboot was necessary or not. This does not appear to > have changed the behavior. > > > Are you seeing "MODE_SELECT" messages in the logs.. Can you paste > > snippet of log messages.. > > There are no "MODE_SELECT" messages in syslog. Would these be appearing > elsewhere? The syslog from the last reboot up until I started receiving > the "Illegal Request" messages is available here > http://tinypaste.com/f7f413 One of your lun seem to have a problem. See these messages below.. Mar 2 12:43:14 rman-ss-03 kernel: scsi 1:0:0:0: rdac: LUN 0 (unowned) Mar 2 12:43:14 rman-ss-03 kernel: sd 1:0:0:1: rdac: LUN 1 (unowned) Mar 2 12:43:14 rman-ss-03 kernel: sd 1:0:0:2: rdac: LUN 2 (owned) Mar 2 12:43:14 rman-ss-03 kernel: scsi 2:0:0:0: rdac: LUN 0 (unowned) Mar 2 12:43:14 rman-ss-03 kernel: sd 2:0:0:1: rdac: LUN 1 (owned) Mar 2 12:43:14 rman-ss-03 kernel: sd 2:0:0:2: rdac: LUN 2 (unowned) Mar 2 12:43:14 rman-ss-03 kernel: rdac: device handler registered Lun 0 is not owned by any of the controllers also it is not claimed by sd driver for some reason. Can you find out why that happened.. Or you can remove Lun 0 and see if issue goes away.. Looking at these messages below it is not clear which device caused this error.. Mar 2 12:56:51 rman-ss-03 kernel: FAILED Mar 2 12:56:51 rman-ss-03 kernel: status = 1, message = 00, host = 0, driver = 08 Mar 2 12:56:51 rman-ss-03 kernel: <6>sd: Current: sense key: Illegal Request Mar 2 12:56:51 rman-ss-03 kernel: <<vendor>> ASC=0x94 ASCQ=0x1ASC=0x94 ASCQ=0x1 Mar 2 12:56:51 rman-ss-03 kernel: Can you please set scsi logging level to 4096(echo 4096 > /proc/sys/dev/scsi/logging_level) and reboot the host.. That would probably give some more info.. > > > -Charles -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
