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Troubleshooting & Diagnostics
Module Replacement Procedures
62
Troubleshooting
Figure 30. DF Disk Module Replacement/Recovery Flowchart for Attached Physical
Volumes
To replace DF
attached physical
Host fail?
Step 1
# lvreduce -m <one less than num_mirrors> -A n <LVname><physical volume path>
lvdisplay
Step 2
Replace faulty
disk drive.
Perform ioscan.
Step 3
# vgcfgrestore -n
Host fail? Repeat Step 3
Step 4
vgchange -a y <volume group name>
Step 5
Disk mirror
of root?
# mkboot
# lvlnboot -A
Step 6
# lvextend -m <one greater than num_mirrors><LV name><physical volume path>
or
# lvextend -m <one greater than num_mirrors> /path
No
Yes
No
Yes
No
Yes
Flowchart B
(see MC/ServiceGuard
note in Step 4)