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Chapter 1 21
LVD Product Information
Front Panel Components
The Hot-Plug Procedure
These are the steps required to properly hot-plug a disk drive:
Step 1
• Check if the LVM found the physical volume to be defective when the volume group was
activated.
• The “vgchange -a y” command would have printed the following message on the
console:
WARNING:
VGCHANGE:WARNING: COULDN’T ATTACH TP THE VOLUME GROUP
PHYSICAL VOLUME “/DEV/DSK/cXtXdX”
THE PATH OF THE PHYSICAL VOLUME REFERS TO A DEVICE THAT DOES NOT
EXIST, OR IS NOT CONFIGURED INTO THE KERNEL.
• If the status of the “vgchange -v vg02” is unknown, you may check if this occurred by
doing a vgdisplay command:
vgdisplay<
VG name
>
For our example:
vgdisplay /dev/vg00
• If the disk was defective at vgchange time, the following messages
will be printed one or more times:
WARNING:
VGDISPLAY: WARNING: COULDN’T QUERY PHYSICAL VOLUME
“/DEV/DSK/cXtXdX”
THE SPECIFIED PATH DOES NOT CORRESPOND TO PHYSICAL VOLUME
ATTACHED TO THE VOLUME GROUP.
VGDISPLAY: WARNING: COULDN’T QUERY ALL OF THE PHYSICAL
VOLUMES
• If you see these messages, the disk was defective at the time the volume group was
activated.
Otherwise, your disk became defective after the vgchange and you must continue with
step 2 of this procedure.