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Full Discussion: replacing mirror disk
Operating Systems AIX replacing mirror disk Post 302555904 by johnf on Friday 16th of September 2011 05:23:42 AM
Old 09-16-2011
As far as I am concerned the simple answer is no you do not have to reboot! First you unmirror rootvg; then withdraw the offending disk with reducevg; delete the disk the rmdev; if the disk is hot swap then withdraw the disk and replace it, however if the disk is not hot swap the system will need to be shutdown and the disk replaced. Once the system is restarted add the new disk to rootvg with the extendvg command and remirror to the new drive. Once this is complete do not forget to set the bosboot and bootlist.

That is that!
 

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

NAME
volreattach - Reattaches disk drives that have once again become accessible SYNOPSIS
/usr/sbin/volreattach [-rb] [accessname...] /usr/sbin/volreattach -c accessname OPTIONS
The volreattach utility has the following options: Calls the volrecover utility to attempt to recover stale plexes of any volumes on the failed disk. Performs the reattach operation in the background. Checks whether a reattach is possible. No operation is performed, but the name of the disk group and disk media name at which the disk can be reattached is displayed. DESCRIPTION
The volreattach utility attempts to reattach disks using the same disk group and media names they had before detachment. This operation may be necessary if a disk has a transient failure, or if some disk drivers are unloaded or unloadable when the Logical Storage Manager is started, causing disks to enter the failed state. If the problem is fixed, the volreattach command can be used to reattach the disks without plexes being flagged as stale, as long as the reattach happens before any volumes on the disk are started. The volreattach command is called from the voldiskadm menus as part of disk recovery. The volreattach utility tries to find a disk with a disk group and disk ID matching that of the disk(s) being reattached. If the matching disk is found, the reattach operation may still fail if the original cause (or some other cause) for the disk failure still exists. EXIT CODES
A zero exit status is returned if it is possible to perform a reattach. Otherwise, non-zero is returned. SEE ALSO
volintro(8), voldiskadm(8), volrecover(8) volreattach(8)
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