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Solaris
DiskSuite: Breaking mirrors.
Post 93956 by Perderabo on Friday 23rd of December 2005 04:28:32 PM
12-23-2005
Well, I must be not focusing on something in your post. OK, /var is screwed up somehow. So you break the mirror, do nothing to repair /var, and boot from one side of the mirror. And then.. 'we received the same "can't write to /var/adm/utmp" error.' Was that not the expected result?
You say 'fsck all the slices on t0 and t2 except t0's /var slice since it's mounted in ro mode.' How did it come to pass that /var was mounted in ro mode? Even if you couldn't get it unmounted for some odd reason, fsck -n should have been possible. Repairing /var seems like the key to recovery. What's wrong with boot into single user mode, square away /var, and reboot?
You say 'fsck all the slices on t0 and t2 except t0's /var slice since it's mounted in ro mode.' How did it come to pass that /var was mounted in ro mode? Even if you couldn't get it unmounted for some odd reason, fsck -n should have been possible. Repairing /var seems like the key to recovery. What's wrong with boot into single user mode, square away /var, and reboot?
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LEARN ABOUT SUNOS
installboot
installboot(1M) installboot(1M) NAME
installboot - install bootblocks in a disk partition SYNOPSIS
installboot bootblk raw-disk-device The boot(1M) program, ufsboot, is loaded from disk by the bootblock program which resides in the boot area of a disk partition. The ufs boot objects are platform-dependent, and reside in the /usr/platform/platform-name/lib/fs/ufs directory. The platform name can be found using the -i option of uname(1). The installboot utility is a SPARC only program. It is not supported on the architecture. users should use installgrub(1M) instead. bootblk The name of the bootblock code. raw-disk-device The name of the disk device onto which the bootblock code is to be installed; it must be a character device which is read- able and writable. Naming conventions for a SCSI or IPI drive are c?t?d?s? and c?d?s? for an IDE drive. Example 1: Installing UFS Boot Block To install a ufs boot block on slice 0 of target 0 on controller 1 of the platform where the command is being run, use: example# installboot /usr/platform/`uname -i`/lib/fs/ufs/bootblk /dev/rdsk/c1t0d0s0 /usr/platform/platform-name/lib/fs/ufs directory where ufs boot objects reside. /platform/platform-name/ufsboot second level program to boot from a disk or CD See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ od(1), uname(1), boot(1M), init(1M), kadb(1M), kernel(1M), monitor(1M), reboot(1M), rpc.bootparamd(1M), init.d(4), attributes(5) WARNINGS
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