How do I determine the device mapping of a SCSI drive to the SCSI host,
bus, lun? And How to I remove the mapping to delete the SCSI drive?
I have a fibre-connected SAN. I've created a few drives on the SAN and
mapped it to my linux host. The linux host sees the drives just fine.
I remove the drives from linux, and left them as uninitialize disks.
Whenever I run "fdisk -l", I get output:
[root@cicweb1 tmp]# /sbin/fdisk -l
Disk /dev/sda: 440.0 GB, 440076861440 bytes
255 heads, 63 sectors/track, 53502 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 104391 83 Linux
/dev/sda2 14 53502 429650392+ 8e Linux LVM
I also get in /var/log/messages that drives that I since removed from
the SAN. How to I remove these (/dev/sdb and /dev/sdc) in linux?
Apr 17 13:02:40 cicweb1 kernel: end_request: I/O error, dev sdb, sector 0
Apr 17 13:02:40 cicweb1 kernel: printk: 48 messages suppressed.
Apr 17 13:02:40 cicweb1 kernel: Buffer I/O error on device sdb, logical
block 0
Apr 17 13:02:40 cicweb1 kernel: end_request: I/O error, dev sdb, sector 0
Apr 17 13:02:40 cicweb1 kernel: Buffer I/O error on device sdb, logical
block 0
Apr 17 13:02:40 cicweb1 kernel: end_request: I/O error, dev sdb, sector 0
Apr 17 13:02:40 cicweb1 kernel: Buffer I/O error on device sdb, logical
block 0
Apr 17 13:02:40 cicweb1 kernel: end_request: I/O error, dev sdb, sector 8
Apr 17 13:02:40 cicweb1 kernel: Buffer I/O error on device sdb, logical
block 1
Apr 17 13:02:40 cicweb1 kernel: Buffer I/O error on device sdb, logical
block 2
Apr 17 13:02:40 cicweb1 kernel: Buffer I/O error on device sdb, logical
block 3
Apr 17 13:02:40 cicweb1 kernel: end_request: I/O error, dev sdb, sector 0
Apr 17 13:02:40 cicweb1 kernel: Buffer I/O error on device sdb, logical
block 0
Apr 17 13:02:40 cicweb1 kernel: end_request: I/O error, dev sdb, sector
1169776632
Apr 17 13:02:40 cicweb1 kernel: Buffer I/O error on device sdb, logical
block 146222079
Apr 17 13:02:40 cicweb1 kernel: end_request: I/O error, dev sdb, sector
1169776632
Apr 17 13:02:40 cicweb1 kernel: Buffer I/O error on device sdb, logical
block 146222079
Apr 17 13:02:40 cicweb1 kernel: end_request: I/O error, dev sdb, sector 0
Apr 17 13:02:40 cicweb1 kernel: Buffer I/O error on device sdb, logical
block 0
Apr 17 13:02:40 cicweb1 kernel: end_request: I/O error, dev sdb, sector 8
Apr 17 13:02:40 cicweb1 kernel: end_request: I/O error, dev sdb, sector 0
Apr 17 13:02:40 cicweb1 kernel: end_request: I/O error, dev sdc, sector 0
Apr 17 13:02:40 cicweb1 last message repeated 2 times
Apr 17 13:02:40 cicweb1 kernel: end_request: I/O error, dev sdc, sector 8
Apr 17 13:02:40 cicweb1 kernel: end_request: I/O error, dev sdc, sector 0
Apr 17 13:02:40 cicweb1 kernel: end_request: I/O error, dev sdc, sector
1169776632
Apr 17 13:02:40 cicweb1 kernel: end_request: I/O error, dev sdc, sector
1169776632
Apr 17 13:02:40 cicweb1 kernel: end_request: I/O error, dev sdc, sector 0
Apr 17 13:02:40 cicweb1 kernel: end_request: I/O error, dev sdc, sector 8
Apr 17 13:02:40 cicweb1 kernel: end_request: I/O error, dev sdc, sector 0
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