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Operating Systems Solaris Solaris patching using mirror disk backup? need help! Post 302637333 by juan.brein on Tuesday 8th of May 2012 06:34:30 PM
Old 05-08-2012
Use Live Upgrade, is much easier...

With SVM still you can offline a leg of the mirror and then mount it as RO. So you wont be able to patch it. It is generally used to perform backups on live systems with minimal impact on the performance. then you have to sync the mirrors back again.

What you could do is split the mirror , fsck the slices from the inactive metadevices and verify that everything is ok. Patch the OS and if something goes wrong just boot from the leg you detached earlier... pretty much the same thing you could do with Live Upgrade but manually... hence... do it with Live Upgrade.

Live upgrade has many many options for different scenarios... just look the one fits better to you. You can find the full documentation with examples at Oracle site under the reference manual section.

Cheers

Juan
 

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dgcfgbackup(1M) 														   dgcfgbackup(1M)

NAME
dgcfgbackup - create or update VxVM volume group configuration backup file SYNOPSIS
/usr/sbin/dgcfgbackup [-f dg_conf_path ] dg_name DESCRIPTION
The dgcfgbackup command saves the VxVM configuration for a disk group in a default or alternate configuration backup file (see the descrip- tion of the-f option). By default, dgcfgbackup is run automatically each time that a VxVM command changes the VxVM configuration. In this case, it always uses the default configuration backup file. An existing default configuration backup file is renamed with an extension of .old. Options and Arguments dg_name Specifies the name of a disk group. -f dg_conf_path Saves the configuration using an alternate file name specified by dg_conf_path. If this option is omitted, the default file name is /etc/vxvmconf/dg_name.conf. EXIT CODES
dgcfgbackup exits with a zero status on successful completion. An non-zero exit status indicates that errors occurred when information from the disk group was being accessed. EXAMPLES
Back up VxVM configuration information for disk group testdg in the default backup file /etc/vxvmconf/testdg.conf: dgcfgbackup testdg Back up VxVM configuration information for disk group datadg in the alternate configuration backup file /tmp/datadg.backup: dgcfgbackup -f /tmp/datadg.backup datadg NOTES
It is recommended that any alternate configuration backup file be created in the root file system (as is the case with the default path name). This facilitates disk group recovery during maintenance mode, such as after a system crash. AUTHOR
dgcfgbackup was developed by the Hewlett-Packard Company. SEE ALSO
dgcfgrestore(1M) VxVM 5.0.31.1 24 Mar 2008 dgcfgbackup(1M)
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