Egenera SAN disk errors diagnosis

November 2nd, 2007 by admin

SYMPTOM br> Repeated errors in /var/log/messages bash-2.05b# tail /var/log/messages Aug 16 15:47:26 hostx kernel: SCSI disk error : host 0 channel 0 id 101 lun 0 return code = 10000 Aug 16 15:47:26 hostx kernel: I/O error: dev 44:a1, sector 16 Aug 16 15:47:26 hostx kernel: SCSI disk error : host 0 channel 0 id 101 lun 0 return code = 10000 Aug 16 15:47:26 hostx kernel: I/O error: dev 44:a1, sector 17 Aug 16 15:47:26 hostx kernel: SCSI disk error : host 0 channel 0 id 101 lun 0 return code = 10000


 TASK
 br> - find out what disk this is and what is wrong with it.
 grep “id 101″ /var/log/dmesg
 Attached scsi disk sdbw at scsi0, channel 0, id 101, lun 0
 bash-2.05b# /sbin/fdisk /dev/sdbw
 Unable to read /dev/sdbw
 bash-2.05b# /etc/vx/diag.d/vxdmpinq /dev/sdbw
 ioctl failed: No such file or directory
 VxVM vxdmpinq ERROR V-5-1-8856 /etc/vx/diag.d/vxdmpinq issue_scsi_ioctl: ioctl failed for /dev/sdbw, status     = 65536 ERRNO   = 1d
 VxVM vxdmpinq ERROR V-5-1-8887 /etc/vx/diag.d/vxdmpinq: Error returned from issue_scsi_ioctl
 The disk has disappeared - call the storage team.
 METHOD2
 It would be nice if emc had a version of inq for linux  
 From: 	 Guru
 Sent:	Thursday, August 16, 2007 3:39 PM
 Both pservers are giving the error, so it should be the storage side problem.
 Ist server
 [root@hostx sg]# df -kl | egrep -i sdbw
 /dev/sdbw1            37742320      7680  37734640   1% /data/oracle/DSGDWH60/u07
 [root@hostx sg]# /etc/vx/diag.d/vxdmpinq /dev/sdbw1
 ioctl failed: No such file or directory
 VxVM vxdmpinq ERROR V-5-1-8856 /etc/vx/diag.d/vxdmpinq issue_scsi_ioctl: ioctl failed for /dev/sdbw1, status    = 65536 ERRNO        = 1d
 VxVM vxdmpinq ERROR V-5-1-8887 /etc/vx/diag.d/vxdmpinq: Error returned from issue_scsi_ioctl
 [root@hostx sg]# /etc/vx/diag.d/vxdmpinq /dev/sdbw
 ioctl failed: No such file or directory
 VxVM vxdmpinq ERROR V-5-1-8856 /etc/vx/diag.d/vxdmpinq issue_scsi_ioctl: ioctl failed for /dev/sdbw, status     = 65536 ERRNO        = 1d
 VxVM vxdmpinq ERROR V-5-1-8887 /etc/vx/diag.d/vxdmpinq: Error returned from issue_scsi_ioctl
 2nd server
 [root@host ~]# /etc/vx/diag.d/vxdmpinq /dev/sdbg1
 ioctl failed: No such file or directory
 VxVM vxdmpinq ERROR V-5-1-8856 /etc/vx/diag.d/vxdmpinq issue_scsi_ioctl: ioctl failed for /dev/sdbg1, status    = 65536 ERRNO        = 1d
 VxVM vxdmpinq ERROR V-5-1-8887 /etc/vx/diag.d/vxdmpinq: Error returned from issue_scsi_ioctl
 Regards,
 Guru
 Not really sure this is correct.
 From pserver output extract
 (101.0)    Yes       Yes             (9.0.8.5)
 From disk outout 
 (9.0.8.5)    36.0GB     DGC/RAID 5           CK200070700473 dev_unix
 On control blade itself,
 [root@hostx1 root]# disk -l “9.0.8.5″
 ID           Capacity   Type                 S/N          LPAN
 (9.0.8.5)    36.0GB     DGC/RAID 5           CK200070700473 dev_unix
 Partitions:
 Get partition table for disk: (9.0.8.5), failed: Could not read disk Could not read disk
 Assignments:
 dev_unix (hosty, hostp)