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Operating Systems AIX AIX break rootvg mirror from system down Post 302942030 by sshapiro on Thursday 23rd of April 2015 07:43:33 PM
Old 04-23-2015
AIX break rootvg mirror from system down

Hello,
aix 5.2, mirrored rootvg on hdisk0 and hdisk1. hdisk0 is dead. I can boot to cd, into sms, into maintenance mode. I can fsck all the various partitions on hdisk1 (the hd4 hd2 hd3, etc...) all is fine. But without the hdisk0 part of the mirror I cannot get the system to boot. ystem hangs on boot with a LED code of 517 (or is it 518?).

None of the lvm commands for dealing with mirrors are in the cd /usr.

I tried editing the image.data file to remove references to hdisk0, and changed all the copies from 2 to 1, fixed the PP entries to match, and hoped that would break the mirrors, but alas.

So for kicks I mounted the "real" usr and now the commands are available, but now they won't work because rootvg cannot be varyonvg'd.
Code:
# lsvg -l rootvg
0516-013 : The volume group cannot be varied on because
        there are no good copies of the descriptor area.

Kind of stuck. suggestions?

Moderator's Comments:
Mod Comment Use code tags, thanks.

Last edited by zaxxon; 04-24-2015 at 06:17 AM..
 

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volencap(8)						      System Manager's Manual						       volencap(8)

NAME
volencap, volreconfig - Encapsulates disks, partitions, or AdvFS domains SYNOPSIS
/usr/sbin/volencap [-g diskgroup] [-p volprefix] [privlen=nn] [nconfig=nn] { diskname | partition_name | domain_name }... /usr/sbin/volencap -k { diskname | partition_name | domain_name }... /usr/sbin/volencap -k -a /usr/sbin/volencap -s /sbin/volreconfig OPTIONS
Puts the encapsulated disk into the disk group specified by disk group ID or disk group name. Instructs volencap to use the specified vol- prefix as the prefix for LSM volume names generated. This is useful if the LSM volume names generated already exist. Instructs volencap to remove any pending encapsulation requests for the specified disk(s), partition(s), or domain(s). Instructs volencap to remove all pending encapsulation requests. Displays all pending encapsulation requests. DESCRIPTION
Disk partitions that have data can be added to LSM using the encapsulation process. This enables users with existing data in disk parti- tions to easily migrate to the use of LSM volumes instead of disk partitions. The /usr/sbin/volencap command is used to encapsulate one or many disk partitions or AdvFS domains. If an individual partition is specified for encapsulation, the volencap command creates a nopriv disk and a volume for that partition. If an entire disk is specified, the volencap command creates a nopriv disk and volume for each in-use partition on the disk. If an AdvFS domain is specified, all disk partitions in the domain are converted to LSM volumes. You can use the volencap command to encapsulate the partitions on the boot disk, including the root file system, primary swap, usr and var partitions, to place them under LSM control. See the Logical Storage Manager manual for more information on encapsulating these partitions. The volencap command can be run directly or through the voldiskadm menus. The volencap command generates LSM commands that are later exe- cuted by the /sbin/volreconfig command to perform the actual conversion of disk partitions to LSM volumes. If the disk partition contains a mounted file system or is otherwise open or in use, the volreconfig command will reboot the system to com- plete the encapsulation process. If you cannot reboot the system at the time you encapsulate the disk partition, either defer running the volreconfig command until you can reboot the system, or unmount or close the disk partition, then run the volreconfig command. See the Logical Storage Manager manual for more details. ATTRIBUTES
Specifies the size of the LSM private region in bytes, for example, privlen=1024. Specifies the number of log copies and copies of the configuration database, for example, nconfig=0. EXAMPLES
To encapsulate all disk partitions on the boot disk called dsk0 to LSM volumes, enter: # volencap dsk0 # volreconfig The volreconfig command will request confirmation prior to rebooting the system. The LSM command scripts created by the volencap command will execute as the system reboots. To encapsulate only the root file system (dsk0a) and swap (dsk0b) partitions on the boot disk, enter: # volencap dsk0a dsk0b # volreconfig The volreconfig command will request confirmation prior to rebooting the system. The LSM command scripts created by the volencap command will execute as the system reboots. To convert all disk partitions in the AdvFS domain called dom1 to LSM volumes, enter: # volencap dom1 # volreconfig The volreconfig command will determine if the domain is active, and if so, request confirmation prior to rebooting the system. The LSM command scripts created by the volencap command will execute as the system reboots. If the AdvFS filesets in domain dom1 are not mounted, then /sbin/volreconfig can be executed on the command line. To encapsulate the specific partition dsk1g to an LSM volume, enter: # volencap dsk1g # volreconfig The volreconfig command will determine if the partition is open, and if so, request confirmation prior to rebooting the system. The LSM command scripts created by the volencap command will be executed as the system reboots. SEE ALSO
volintro(8) volencap(8)
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