panic[cpu3]/thread=140a000: vfs_mountroot: cannot mount root

Hi ,

I got CPU panic problem on my server. Here is the error message:

Rebooting with command: boot disk6 Boot device:
/pci@8,600000/SUNW,qlc@2/fp@0,0/disk@8,0 File and args: | SunOS Release 5.9
Version Generic_118558-11 64-bit Copyright 1983-2003 Sun Microsystems, Inc.
All rights reserved. Use is subject to license terms. Cannot mount root on
/pseudo/md@0:0,5,blk fstype ufs panic[cpu3]/thread=140a000: vfs_mountroot:
cannot mount root 0000000001409970 genunix:vfs_mountroot+70 (0, 0, 0, 200,
1457ef0, 0) %l0-3: 000000000144b800 000000000144b800 0000000000002000
0000000001495a40 %l4-7: 000000000149b800 0000000001411e58 000000000144c000
000000000144f000 0000000001409a20 genunix:main+90 (1409ba0, f0061a30,
1409ec0, 38dc6c, 2000, 500) %l0-3: 0000000000000001 000000000140a000
0000000001413018 00000000

Could anyone told me what happened on my server?


Thanks
Jason

Can you still boot to the system? If not, then it seems as if your root
mount partition failed.

Jason Wang wrote:
> Hi ,
>
> I got CPU panic problem on my server. Here is the error message:
>
> Rebooting with command: boot disk6 Boot device:
> /pci@8,600000/SUNW,qlc@2/fp@0,0/disk@8,0 File and args: | SunOS Release 5.9
> Version Generic_118558-11 64-bit Copyright 1983-2003 Sun Microsystems, Inc.
> All rights reserved. Use is subject to license terms. Cannot mount root on
> /pseudo/md@0:0,5,blk fstype ufs panic[cpu3]/thread=140a000: vfs_mountroot:
> cannot mount root 0000000001409970 genunix:vfs_mountroot+70 (0, 0, 0, 200,
> 1457ef0, 0) %l0-3: 000000000144b800 000000000144b800 0000000000002000
> 0000000001495a40 %l4-7: 000000000149b800 0000000001411e58 000000000144c000
> 000000000144f000 0000000001409a20 genunix:main+90 (1409ba0, f0061a30,
> 1409ec0, 38dc6c, 2000, 500) %l0-3: 0000000000000001 000000000140a000
> 0000000001413018 00000000
>
> Could anyone told me what happened on my server?
>
>
> Thanks
> Jason
>
>
>
Hi Jason,

if possible boot from cdrom or install server and run fsck on boot
device disk 6.

Last week i had the same problem with a SF2900 and S1 Storage.
But from S1 disk results in a CPU Panic.
File System has been checked.
probe-scsi-all was successfully.

The vhdci scsi cable between the S1 and the HBA in E2900 was faulty.
After the replacement of the cable the System works fine.

HTH

Thomas

> I got CPU panic problem on my server. Here is the error message:
>
> Rebooting with command: boot disk6 Boot device:
> /pci@8,600000/SUNW,qlc@2/fp@0,0/disk@8,0 File and args: | SunOS Release
5.9
> Version Generic_118558-11 64-bit Copyright 1983-2003 Sun Microsystems,
Inc.
> All rights reserved. Use is subject to license terms. Cannot mount root on
> /pseudo/md@0:0,5,blk fstype ufs panic[cpu3]/thread=140a000: vfs_mountroot:
> cannot mount root 0000000001409970 genunix:vfs_mountroot+70 (0, 0, 0, 200,
> 1457ef0, 0) %l0-3: 000000000144b800 000000000144b800 0000000000002000
> 0000000001495a40 %l4-7: 000000000149b800 0000000001411e58 000000000144c000
> 000000000144f000 0000000001409a20 genunix:main+90 (1409ba0, f0061a30,
> 1409ec0, 38dc6c, 2000, 500) %l0-3: 0000000000000001 000000000140a000
> 0000000001413018 00000000
>
> Could anyone told me what happened on my server?

Is it a Sun Fire V880/V890? From the boot device this would be my best
guess.

Does it always panic on the same CPU?
What happens if you boot single-user mode off a CD-ROM instead of the hard
drive?

If you can boot up to a command prompt off a CD-ROM I'd say fsck everything
and anything and then try to boot up normally and see if that fixes the
problem.

Should problems happen even while booting off a CD-ROM, then see if you can
connect a serial console to the server unless that's what you're already
doing. If so, then set diag-level to max and diag-switch? to true and power
cycle the machine. With the machine at this level you are more likely to
have a CPU or DIMM detected if faulty. There's also a better chance the
diagnostics will offline whatever is at fault and at least let you boot up
in a degraded state until you can get the machine serviced.

Trinean