Red Hat GFS 5.2.1 -, Руководство администратора

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Chapter 5. Using the Pool Volume Manager 27
5.3. Scanning Block Devices
Scanning block devices provides information about the availability and characteristics of the devices.
That information is important for creating a pool configuration file. You can scan block devices by
issuing the
pool_tool
command with the
-s
option. Issuing the
pool_tool
command with the
-s
option scans all visible block devices and reports whether they have an Ext2 or Ext3 file system, LVM
version 1 labels, a partition table, a pool label, or an unknown label on them.
Note
The
pool_tool
-s
command does not detect ondisk labels other than those mentioned in the pre-
ceding paragraph.
5.3.1. Usage
pool_tool -s
5.3.2. Example
In this example, the response to the command displays information about one GFS file system, other
file systems that have no labels, and a local file system.
#
pool_tool -s
Device Pool Label
====== ==========
/dev/pool/stripe-128K <- GFS filesystem ->
/dev/sda <- partition information ->
/dev/sda1 stripe-128K
/dev/sda2 stripe-128K
/dev/sda3 stripe-128K
/dev/sda4 <- partition information ->
/dev/sda5 <- unknown ->
/dev/sda6 <- unknown ->
/dev/sda7 <- unknown ->
/dev/sda8 <- unknown ->
/dev/sdb <- partition information ->
/dev/sdb1 <- unknown ->
/dev/sdb2 <- unknown ->
/dev/sdb3 <- unknown ->
. .
. .
. .
/dev/sdd4 <- partition information ->
/dev/sdd5 <- unknown ->
/dev/sdd6 <- unknown ->
/dev/sdd7 <- unknown ->
/dev/sdd8 <- unknown ->
/dev/hda <- partition information ->
/dev/hda1 <- EXT2/3 filesystem ->
/dev/hda2 <- swap device ->
/dev/hda3 <- EXT2/3 filesystem ->