Hi

There was issue with once of the Production Server, in which it was not coming after rebooting, as it was giving error as mentioned below.

SunOS Release 5.10 Version Generic_118822-20 64-bit Copyright 1983-2005 Sun Microsystems, Inc. All rights reserved.
Use is subject to license terms.
WARNING: md: d1: (Unavailable) needs maintenance
WARNING: Error writing ufs log state
WARNING: ufs log for / changed state to Error
WARNING: Please umount(1M) / and run fsck(1M)

panic[cpu1]/thread=180e000: Could not install the isa driver


000000000180b960 unixost_startup+4c (0, 1190e04, 0, 10, 11de000, 1819400)
%l0-3: 0000000000000000 00000300003c3c28 0000000000000000 0000000000000001
%l4-7: 0000000000000000 0000000000000000 0000000000000000 000006000081ea08 000000000180ba10 genunix:main+c8 (1813d08, 1013400, 1835b00, 18aa800, 180e000, 1813c00)
%l0-3: 0000000070002000 0000000000000001 000000000180c000 000000000180e000
%l4-7: 0000000000000001 0000000001072800 0000000000000060 0000000000000000

syncing file systems... done
skipping system dump - no dump device configured rebooting...
Probing system devices
Probing memory
Probing I/O buses

Sun Fire V210, No Keyboard
Copyright 1998-2004 Sun Microsystems, Inc. All rights reserved.
OpenBoot 4.16.2, 2048 MB memory installed, Serial #65710225.
Ethernet address 0:3:ba:ea:a8:91, Host ID: 83eaa891.


I have tried to reboot in single user mode, but the same error I was getting.

I have resolved this issue by booting the same through CD and changed the /etc/vfstab as below, so that instaed of metadevice it can boot from individual disk, and recreated mirror.

#/dev/md/dsk/d3 - - swap - no -

dev/dsk/c0t0d0s1 - - swap - no -

#/dev/md/dsk/d0 /dev/md/rdsk/d0 / ufs 1 no -

/dev/dsk/c0t0d0s0 /dev/rdsk/c0t0d0s0 / ufs 1 no -


Please find herewith my queries, as I want to know root cause for the same. As I have no. of production serversI would like to know what else I have to check before rebooting the server, so that I can avoid such issue.

1. What will be the root cause of this problem ?
2. Before rebooting I have tried the status of metastat which seems good.


Please suggest.

Thanks
Rajan

You just have errors on the partition that's mounted on /. Boot a Live CD, it doesn't matter which (Ubuntu, Solaris, ...), it just has to have fsck. Then, run fsck on that partition, wait until it's completed, reboot and boot Solaris normally. If it doesn't work, tell me.