VCS ON
RHEL6–CONFIGURE & OPERATION-P2
SETTING UP NFS AS A VCS RESOURCE VIA GUI,
Check the disks,
[root@pr01 ~]# vxdisk list
DEVICE TYPE DISK GROUP STATUS
sda auto:none - - online invalid
sdb auto:none - - online invalid
sdc auto:sliced - - online
sdd auto:none - - online invalid
sde auto - - error
sdf auto:none - - online invalid
Setup a disk for NFS,
[root@pr01 ~]# vxdisksetup -i sdd format=sliced
[root@pr01 ~]# vxdisk list
DEVICE TYPE DISK GROUP STATUS
sda auto:none - - online invalid
sdb auto:none - - online invalid
sdc auto:sliced -
- online
sdd auto:sliced - - online
sde auto - - error
sdf auto:none - - online invalid
Create DG,
[root@pr01 ~]# vxdg init nfs_dg nfs-disk01=sdd cds=off
Create Volume,
[root@pr01 ~]# vxassist -g nfs_dg maxsize
Maximum volume size: 20240384 (9883Mb)
[root@pr01 ~]# vxassist -g nfs_dg make nfs-vol 9883M
Create File system,
[root@pr01 ~]# mkfs -t vxfs /dev/vx/dsk/nfs_dg/nfs-vol
version 9 layout
20240384 sectors, 10120192
blocks of size 1024, log size 16384 blocks
rcq size 1024 blocks
largefiles supported
Mount Directory,
[root@pr01 ~]# mkdir /nfs-test
[root@pr01 ~]# mount -t vxfs /dev/vx/dsk/nfs_dg/nfs-vol
/nfs-test
[root@pr01 ~]# df -kh
Filesystem Size Used Avail Use% Mounted on
/dev/sda2 13G 6.5G
5.4G 55% /
tmpfs 497M 0
497M 0% /dev/shm
/dev/sda1 485M 37M
423M 8% /boot
.host:/ 108G 104G
4.2G 97% /mnt/hgfs
/dev/vx/dsk/nfs_dg/nfs-vol
9.7G 21M
9.1G 1% /nfs-test
[root@pr01 ~]# umount /nfs-test
IF NFS IS NOT INSTALLED,
[root@pr01 ~]# yum install -y nfs*
Loaded plugins: product-id, security, subscription-manager
This system is not registered to Red Hat Subscription Management. You
can use subscription-manager to register.
localrepo
| 2.9 kB 00:00 ...
Setting up Install Process
Package nfs-utils-lib-1.1.5-6.el6.x86_64 already installed and latest
version
Package nfs4-acl-tools-0.3.3-6.el6.x86_64 already installed and
latest version
Package 1:nfs-utils-1.2.3-36.el6.x86_64 already installed and latest
version
Nothing to do
We can find the sample configuration for “nfs-resource” at following
location.
[root@pr01 sample_nfs]# pwd
/etc/VRTSvcs/conf/sample_nfs
NOW CREATE THE SERVICE GROUP VIA GUI,
Ohhh... Something went wrong... BUT WHAT.......??
Lets find out.
[root@pr01 ~]# ls /dev/vx/dsk/nfs_dg/nfs-vol
ls: cannot access /dev/vx/dsk/nfs_dg/nfs-vol: No such file or
directory
[root@pr01 ~]# vxdg list
NAME STATE ID
apps_dg enabled 1488602380.15.pr01
[root@pr01 ~]# vxdg list nfs_dg
VxVM vxdg ERROR V-5-1-582 Disk group nfs_dg: No such disk group
[root@pr01 ~]# vxdisk -o alldgs list
DEVICE TYPE DISK GROUP STATUS
sda auto:none - - online invalid
sdb auto:none - - online invalid
sdc auto:sliced appsdg01 apps_dg online
sdd auto:sliced - (nfs_dg) online
sde auto - - error
sdf auto:none - - online invalid
[root@dr01 config]# ls /dev/vx/dsk/nfs_dg/nfs-vol
/dev/vx/dsk/nfs_dg/nfs-vol
[root@dr01 config]# ls -l /dev/vx/dsk/nfs_dg/nfs-vol
ls: cannot access /dev/vx/dsk/nfs_dg/nfs-vol: No such file or
directory
[root@dr01 config]# vxdg list nfs_dg
VxVM vxdg ERROR V-5-1-582 Disk group nfs_dg: No such disk group
[root@dr01 config]# vxdisk -o alldgs list
DEVICE TYPE DISK GROUP STATUS
disk_0 auto:sliced - (nfs_dg) online
disk_1 auto:sliced -
(apps_dg) online
disk_2 auto - - error
disk_3 auto:none - - online invalid
sda auto:none - - online invalid
[root@dr01 config]#
Resource dependency tree should be like this,
IP > NIC
VOL > DG
MOUNT > VOL
SHARE > MOUNT
SHARE > NFS SERVICE
NFS restart > IP
NFS restart > SHARE
Problem was with dependency, resources were started in unmannered
state.
[root@pr01 ~]# vxdisk -o alldgs list
DEVICE TYPE DISK GROUP STATUS
sda auto:none - - online invalid
sdb auto:none - - online invalid
sdc auto:sliced appsdg01 apps_dg online
sdd auto:sliced nfs-disk01 nfs_dg
online
sde auto - - error
sdf auto:none - - online invalid
[root@pr01 ~]# vxdg list
NAME STATE ID
apps_dg enabled 1488602380.15.pr01
nfs_dg enabled 1488721312.27.pr01
[root@pr01 ~]# hastatus -sum
--
SYSTEM STATE
--
System State Frozen
A dr01 RUNNING 0
A pr01 RUNNING 0
--
GROUP STATE
--
Group System Probed AutoDisabled State
B NFS_APP1 dr01 Y N OFFLINE
B NFS_APP1 pr01 Y N ONLINE
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