Seagate ST34572WC Specifications download pdf (Page 20)

Root: lvol3 on: /dev/dsk/c0t5d0

Swap: lvol2 on: /dev/dsk/c0t5d0

Dump: lvol2 on: /dev/dsk/c0t5d0, 0

# pvdisplay –v /dev/dsk/c2t15d0 | more

…

--- Distribution of physical volume ---

LV Name LE of LV PE for LV

/dev/vg01/lvol1 4340 4340

…

# lvdisplay –v /dev/vg01/lvol1 | grep “Mirror copies”

Mirror copies 1

# lvdisplay -v /dev/vg01/lvol1 | grep –e /dev/dsk/c2t15d0 –e ’???’ | more

00000 /dev/dsk/c2t15d0 00000 current /dev/dsk/c5t15d0 00000 current

00001 /dev/dsk/c2t15d0 00001 current /dev/dsk/c5t15d0 00001 current

00002 /dev/dsk/c2t15d0 00002 current /dev/dsk/c5t15d0 00002 current

00003 /dev/dsk/c2t15d0 00003 current /dev/dsk/c5t15d0 00003 current

…

The lvlnboot command confirms that the disk is not in the root volume group. The pvdisplay command

shows which logical volumes are on the disk. The lvdisplay command shows that all data in the logical volume

has a current mirror copy on another disk. Run the following commands to continue with the disk replacement:

# pvchange -a N /dev/dsk/c2t15d0

# <replace the hot-swappable disk>

# vgcfgrestore –n vg01 /dev/rdsk/c2t15d0

# vgchange –a y vg01

Scenario 2: No Mirroring and No LVM Online Replacement

In this example, the disk is still hot-swappable, but there are unmirrored logical volumes and the LVM OLR patches

are not installed. Disabling LVM access to the logical volumes is more complicated, since you must find out what

processes are using them.

The bad disk is represented by device special file /dev/dsk/c2t2d0. Run the following commands:

# lvlnboot –v

Boot Definitions for Volume Group /dev/vg00:

Physical Volumes belonging in Root Volume Group:

/dev/dsk/c0t5d0 (0/0/0/3/0.5.0) -- Boot Disk

Boot: lvol1 on: /dev/dsk/c0t5d0

Root: lvol3 on: /dev/dsk/c0t5d0

Swap: lvol2 on: /dev/dsk/c0t5d0

Dump: lvol2 on: /dev/dsk/c0t5d0, 0

# pvdisplay –v /dev/dsk/c2t2d0 | more

…

--- Distribution of physical volume ---

LV Name LE of LV PE for LV

/dev/vg01/lvol1 4340 4340

…

# lvdisplay –v /dev/vg01/lvol1 | grep “Mirror copies”

Mirror copies 0

This confirms that the logical volume is not mirrored, and it is not in the root volume group. As system

administrator, you know that the logical volume is a mounted file system. To disable access to the logical volume,

try to unmount it. Use fuser to isolate and terminate processes using the file system, if necessary. Run the

following commands:

# umount /dev/vg01/lvol1

umount: cannot unmount /dump : Device busy

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Seagate ST34572WC Specifications Page 20

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