Seagate ST34572WC Dokumentacja Pobierz pdf (Strona 34)

b. If fuser reports process IDs using the logical volume, use the ps command to map the

list of process IDs to processes, and determine whether you can halt those processes. For

example, look up processes 27815 and 27184 as follows:

# ps -fp27815 -p27184

UID PID PPID C STIME TTY TIME COMMAND

root 27815 27184 0 09:04:05 pts/0 0:00 vi test.c

root 27184 27182 0 08:26:24 pts/0 0:00 -sh

c. If so, use fuser with the –k option to kill all processes accessing the logical volume.

The example processes are noncritical, so kill them as follows:

# fuser -ku dev/vg01/lvol1

/dev/vg01/lvol1: 27815c(root) 27184c(root)

d. If the logical volume is being used as a file system, unmount it as follows:

# umount /dev/vg01/lvol1

Note: If you cannot stop the applications using the logical volume, or you cannot

unmount the file system, you must shut down the system.

After disabling user access to the unmirrored logical volumes, disable LVM access to the

disk:

# pvchange -a N /dev/disk/disk14

3. Replace the disk.

For the hardware details on how to replace the disk, see the hardware administrator’s guide for

the system or disk array.

If the disk is hot-swappable, replace it.

If the disk is not hot-swappable, shut down the system, turn off the power, and replace the disk.

Reboot the system.

Notify the mass storage subsystem that the disk has been replaced.

If the system was not rebooted to replace the failed disk, run scsimgr before using the new disk

as a replacement for the old disk. For example:

# scsimgr replace_wwid –D /dev/rdisk/disk14

This command lets the storage subsystem replace the old disk’s LUN World-Wide-Identifier

(WWID) with the new disk’s LUN WWID. The storage subsystem creates a new LUN instance and

new device special files for the replacement disk.

4. Determine the new LUN instance number for the replacement disk. For example:

# ioscan –m lun

Class I Lun H/W Path Driver S/W State H/W Type Health Description

========================================================================

disk 14 64000/0xfa00/0x0 esdisk NO_HW DEVICE offline HP MSA Vol

/dev/disk/disk14 /dev/rdisk/disk14

...

disk 28 64000/0xfa00/0x1c esdisk CLAIMED DEVICE online HP MSA Vol

0/1/1/1.0x3.0x0

/dev/disk/disk28 /dev/rdisk/disk28

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 ... 66 67

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Seagate ST34572WC Dokumentacja Strona 34