Red Hat GFS 6.1 -, Руководство администратора

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Chapter 5. Managing GFS 57
Variable Description
@gid
This variable resolves to a real file or directory named with
the group ID string produced by the output of the following
command:
echo ‘id -g‘
Table 5-5. CDPN
Variable
Values
5.13.2. Example
In this example, there are three nodes with hostnames
n01
,
n02
and
n03
. Applications
on each node uses directory
/gfs/log/
, but the administrator wants these directories
to be separate for each node. To do this, no actual log directory is created; instead, an
@hostname
CDPN link is created with the name
log
. Individual directories
/gfs/n01/
,
/gfs/n02/
, and
/gfs/n03/
are created that will be the actual directories used when each
node references
/gfs/log/
.
n01#
cd /gfs
n01#
mkdir n01 n02 n03
n01#
ln -s @hostname log
n01#
ls -l /gfs
lrwxrwxrwx 1 root root 9 Apr 25 14:04 log -> @hostname/
drwxr-xr-x 2 root root 3864 Apr 25 14:05 n01/
drwxr-xr-x 2 root root 3864 Apr 25 14:06 n02/
drwxr-xr-x 2 root root 3864 Apr 25 14:06 n03/
n01#
touch /gfs/log/fileA
n02#
touch /gfs/log/fileB
n03#
touch /gfs/log/fileC
n01#
ls /gfs/log/
fileA
n02#
ls /gfs/log/
fileB
n03#
ls /gfs/log/
fileC