Hi everyone,
I have the following configuration:
Mainboard : Supermicro P6SBA
Memory : 128MB SDRAM
SCSI-controller : Symbios 875
RAID-controller : Mylex eXtreme RAID DAC1164P
Harddisk : 3 * Seagate Cheetah 9.1 Gb ST39102LW
The Symbios SCSI-controller is used for the CD-rom, the three harddrives are
configurated as RAID-5. I am using Redhat Linux 6.1. Everything works very
well, but I cannot rebuild a harddrive without rebooting the server.
This is an overview of the configuration messages:
***** DAC960 RAID Driver Version 2.2.4 of 23 August 1999 *****
Copyright 1998-1999 by Leonard N. Zubkoff <[EMAIL PROTECTED]>
Configuring Mylex DAC1164P PCI RAID Controller
Firmware Version: 5.07-0-79, Channels: 2, Memory Size: 16MB
PCI Bus: 2, Device: 8, Function: 0, I/O Address: Unassigned
PCI Address: 0xFEAFFF80 mapped at 0xC4809F80, IRQ Channel: 5
Controller Queue Depth: 128, Maximum Blocks per Command: 128
Driver Queue Depth: 127, Maximum Scatter/Gather Segments: 33
Stripe Size: 64KB, Segment Size: 8KB, BIOS Geometry: 255/63
Physical Devices:
0:1 Vendor: SEAGATE Model: ST39102LW Revision: 0006
Serial Number: LJG6871700001934JHGM
Disk Status: Online, 17782784 blocks
0:2 Vendor: SEAGATE Model: ST39102LW Revision: 0006
Serial Number: LJR02916000019460G8B
Disk Status: Online, 17782784 blocks
0:3 Vendor: SEAGATE Model: ST39102LW Revision: 0006
Serial Number: LJH0426100001934JLXW
Disk Status: Online, 17782784 blocks
0:7 Vendor: MYLEX Model: DAC1164P Revision: 0507
Serial Number:
1:7 Vendor: MYLEX Model: DAC1164P Revision: 0507
Serial Number:
Logical Drives:
/dev/rd/c0d0: RAID-5, Online, 35565568 blocks, Write Thru
I ran into problems when trying to rebuild a failed drive (it is
hot-swappable) .Then I waited for about 30 sec and put it back in. Then I
issued the rebuild command. The following message appears:
Rebuild of Physical Drive 0:2 Failed - Attempt to Rebuild Online or
Unresponsive Drive
There is a strange thing with the drive status: When I remove a harddisk, the
status becomes critical and then DEAD.
When I ask for the current status, it only shows
0:1 Vendor: SEAGATE Model: ST39102LW Revision: 0006
Serial Number: LJG6871700001934JHGM
Disk Status: Online, 17782784 blocks, 8 resets
0:2 Vendor: SEAGATE Model: ST39102LW Revision: 0006
Serial Number: LJR02916000019460G8B
0:3 Vendor: SEAGATE Model: ST39102LW Revision: 0006
Serial Number: LJH0426100001934JLXW
Disk Status: Online, 17782784 blocks, 8 resets
As you can see, there is no diskstatus of drive 0:2 which is the drive I
removed. When I reboot the machine the status is there again and shows
0:1 Vendor: SEAGATE Model: ST39102LW Revision: 0006
Serial Number: LJG6871700001934JHGM
Disk Status: Online, 17782784 blocks,
0:2 Vendor: SEAGATE Model: ST39102LW Revision: 0006
Serial Number: LJR02916000019460G8B
Disk Status: Dead, 17782784 blocks
0:3 Vendor: SEAGATE Model: ST39102LW Revision: 0006
Serial Number: LJH0426100001934JLXW
Disk Status: Online, 17782784 blocks,
Now the status of drive 0:2 is DEAD and I can start a rebuild of drive 0:2.
Rebuild of Physical Drive 0:2 Initiated
Rebuild in Progress: Logical Drive 0 (/dev/rd/c0d0) 1% completed
....
Rebuild in Progress: Logical Drive 0 (/dev/rd/c0d0) 97% completed
Rebuild Completed Successfully
Physical Drive 0:2 is now ONLINE
Logical Drive 0 (/dev/rd/c0d0) is now ONLINE
What can be the cause of this?? I don't want to reboot the server when a
drive crashes, it should be possible to rebuild it online!
It seems to me that the RAID-controller should scan the SCSI bus for new
harddrives, even without doing a reboot.
Anyone?????
Maarten van Lieshout
System Administrator
email:[EMAIL PROTECTED]
