I have a MD3000 with RHEL5.  After a kernel update the MD3000 failed to load so I downgraded the kernel and everything is fine.  I then downloaded the current driver CD and updated all the drivers from the CD.  Now when I reboot I am getting Buffer I/O errors.  I still have my 2 Volumes but no sg mappings, which is causing my backups to fail. Currently on kernel  2.6.18-238.12.1.el5

 

# dkms status

mptlinux, 4.00.38.02, 2.6.18-194.17.4.el5, x86_64: installed (original_module exists)

mptlinux, 4.00.38.02, 2.6.18-194.11.1.el5, x86_64: built

mptlinux, 4.00.38.02, 2.6.18-238.12.1.el5, x86_64: installed (original_module exists)

sg, 3.5.34dell, 2.6.18-194.11.1.el5, x86_64: installed

sg, 3.5.34dell, 2.6.18-8.el5, x86_64: built

linuxrdac, 09.03.0C06.0452.2, 2.6.18-92.el5, x86_64: built

linuxrdac, 09.03.0C06.0452.2, 2.6.18-92.el5, i686: built

linuxrdac, 09.03.0C06.0452.2, 2.6.18-164.9.1.el5, x86_64: built

linuxrdac, 09.03.0C06.0452.2, 2.6.18-164.9.1.el5, i686: built

linuxrdac, 09.03.0C06.0452.2, 2.6.18-194.el5, x86_64: built

linuxrdac, 09.03.0C06.0452.2, 2.6.18-194.el5, i686: built

linuxrdac, 09.03.0C06.0452.2, 2.6.18-164.el5, x86_64: built

linuxrdac, 09.03.0C06.0452.2, 2.6.18-164.el5, i686: built

linuxrdac, 09.03.0C06.0452.2, 2.6.18-128.el5, x86_64: built

linuxrdac, 09.03.0C06.0452.2, 2.6.18-128.el5, i686: built

linuxrdac, 09.03.0C06.0452.2, 2.6.18-238.12.1.el5, x86_64: installed

linuxrdac, 09.03.0C06.0452.2, 2.6.18-194.17.1.el5, x86_64: installed-weak from 2.6.18-238.12.1.el5

mptlinux, 4.00.38.02, 2.6.18-194.17.1.el5, x86_64: installed-weak from 2.6.18-238.12.1.el5

sg, 3.5.34dell, 2.6.18-194.17.1.el5, x86_64: installed-weak from 2.6.18-194.11.1.el5

mptlinux, 4.00.38.02, 2.6.18-238.12.1.el5, x86_64: installed-weak from 2.6.18-194.17.4.el5

sg, 3.5.34dell, 2.6.18-238.12.1.el5, x86_64: installed-weak from 2.6.18-194.11.1.el5

linuxrdac, 09.03.0C06.0452.2, 2.6.18-194.17.4.el5, x86_64: installed-weak from 2.6.18-238.12.1.el5

mptlinux, 4.00.38.02, 2.6.18-194.17.4.el5, x86_64: installed-weak from 2.6.18-238.12.1.el5

sg, 3.5.34dell, 2.6.18-194.17.4.el5, x86_64: installed-weak from 2.6.18-194.11.1.el5

 

# SMdevices

Dell Modular Disk Storage Manager Devices, Version 10.01.A6.01

Built Mon Sep 22 09:20:05 CDT 2008

Copyright (C) 2006 - 2008  Dell Inc. All rights reserved.

 

  /dev/sdb (/dev/sg1) [Storage Array SA1, Virtual Disk Access, LUN 31, Virtual Disk ID <6842b2b00015e7d60000027d4c33faf0>]

  /dev/sdc (/dev/sg2) [Storage Array SA1, Virtual Disk Access, LUN 31, Virtual Disk ID <6842b2b00015e7d60000027d4c33faf0>]

  /dev/sdd (/dev/sg6) [Storage Array SA1, Virtual Disk backupvol, LUN 0, Virtual Disk ID <6842b2b00015e7d6000002e64c7c3af9>, Preferred Path (Controller-0): In Use]

  /dev/sde (/dev/sg7) [Storage Array SA1, Virtual Disk afmsttvol, LUN 1, Virtual Disk ID <6842b2b00015e7d8000003034c7b79f9>, Preferred Path (Controller-1): In Use]

 

 

On boot up:

482 [RAIDarray.mpp]vtid 0: Lun 31 is not present.

Jul  8 17:22:41 reactor kernel: sd 5:0:0:0: Unexpected response from lun 31 while scanning, scan aborted

Jul  8 17:22:41 reactor kernel: device-mapper: uevent: version 1.0.3

Jul  8 17:22:41 reactor kernel: device-mapper: ioctl: 4.11.5-ioctl (2007-12-12) initialised: dm-devel@redhat.com

Jul  8 17:22:41 reactor kernel: device-mapper: dm-raid45: initialized v0.2594l

Jul  8 17:22:41 reactor kernel: end_request: I/O error, dev sdc, sector 0

Jul  8 17:22:41 reactor kernel: Buffer I/O error on device sdc, logical block 0

Jul  8 17:22:41 reactor kernel: Buffer I/O error on device sdc, logical block 1

Jul  8 17:22:41 reactor kernel: Buffer I/O error on device sdc, logical block 2

Jul  8 17:22:41 reactor kernel: Buffer I/O error on device sdc, logical block 3

Jul  8 17:22:41 reactor kernel: Buffer I/O error on device sdc, logical block 4

Jul  8 17:22:41 reactor kernel: Buffer I/O error on device sdc, logical block 5

Jul  8 17:22:41 reactor kernel: Buffer I/O error on device sdc, logical block 6

Jul  8 17:22:41 reactor kernel: Buffer I/O error on device sdc, logical block 7

Jul  8 17:22:41 reactor kernel: Buffer I/O error on device sdc, logical block 8

Jul  8 17:22:41 reactor kernel: Buffer I/O error on device sdc, logical block 9

Jul  8 17:22:41 reactor kernel: end_request: I/O error, dev sdb, sector 0

Jul  8 17:22:41 reactor kernel: end_request: I/O error, dev sdc, sector 0

Jul  8 17:22:41 reactor kernel: end_request: I/O error, dev sdb, sector 0

Jul  8 17:22:41 reactor kernel: end_request: I/O error, dev sdc, sector 0

Jul  8 17:22:41 reactor kernel: end_request: I/O error, dev sdb, sector 0

Any Ideas would be appreciated.

Bgraham