Aix Disk Removing from Mirror Command line Help

For Hardware Failure Please call Shailesh @ +919769494144 mail us:shailesh.bhanushali@infotrendz.com or visit us on http://www.infotrendz.com/


removing and replacing a fixed disk on an IBM AIX server (mirrored volume group)

Description


Procedure to remove a dead disk from a mirrored volume group on an IBM AIX server:


List the hdisks


# lspv

hdisk0 00522d5f22e3b29d rootvg

hdisk1 00522d5f90e66fd2 datavg

hdisk2 00522df586d454c3 datavg


List the logical volumes (LV) on the volume group (VG)


# lsvg -l datavg

datavg:

LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT

lv00log jfslog 1 2 2 open/syncd N/A

lv01 jfs 2 4 2 open/syncd /myapp

lv02 jfs 1 2 2 open/syncd /usr/local


Reduce the logical volume copies from both disks to hdisk1 only (the good disk)


# rmlvcopy lv00log 1 hdisk2 (replace hdisk2 with the dead hdisk)

# rmlvcopy lv01 1 hdisk2

# rmlvcopy lv02 1 hdisk2


Check that no logical volumes are left on hdisk2


# lspv -p hdisk2


hdisk2:

PP RANGE STATE REGION LV ID TYPE MOUNT POINT

1-101 free outer edge

102-201 free outer middle

202-301 free center

302-401 free inner middle

402-501 free inner edge


Remove the volume group from hdisk2


# reducevg -df datavg hdisk2


Check that everything has been removed from hdisk2


# lspv

hdisk0 00522d5f22e3b29d rootvg

hdisk1 00522d5f90e66fd2 datavg

hdisk2 00522df586d454c3 None


Delete hdisk2


# rmdev -l hdisk2 -d


Have the IBM tech replace the dead disk...


Configure the new disk drive


# cfgmgr


Check new hard drive is present


# lspv


Include the new hdisk in root volume group


# extendvg datavg hdisk? (where hdisk? is the new hard disk)


Re-create the mirror


# mirrorvg datavg hdisk? (where hdisk? is the new hard disk)


Syncronise the mirror


# syncvg -v datavg

Example


rmlvcopy lv00log 1 hdisk2


removing unused hdisk and vpath in IBM AIX

Description


Determine the vpath which are unused with the command:


# lspv | grep vpath | grep None


Determine the hdisk associations using the command:


# lsvpcfg


Determine the serial numbers of your disks you will be removing using the command:


# lscfg -pv | egrep 'IBM FC 2105E20|12494' | more


Note down these serial numbers as you may need them later


Remove the vpaths and then the hdisks using the commands:


# rmdev -dl vpath#

# rmdev -dl hdisk#


Note you MUST start with the vpaths for removal

Example


rmdev -dl vpath# | hdisk#

For Hardware Failure Please call Shailesh @ +919769494144 mail us:shailesh.bhanushali@infotrendz.com or visit us on http://www.infotrendz.com/