HomePage » StorageSAN


Sub-topics
3Par
SVC


HPUX and HP SAN VA7410

Adding a LUN on VA7410
armcfg -L 101 -a 5G -g 1 va7410_1
armsecure -r -f current.cfg -p AUTORAID va7410_1
edit current.cfg
armsecure -w -c -f current.cfg -p AUTORAID va7410_1


Assigning a LUN to a host
On the host computer, issue the following command to show the device path
armtopology lrtdi031 | grep 101

lrtdi031 50060b000021dabd 50060b000021dabc A6218A           00SG325J0030  1  1  101  lrtdi031             /dev/dsk/c33t12d5
lrtdi031 50060b000021dabd 50060b000021dabc A6218A           00SG325J0030  1  1  101  lrtdi031             /dev/dsk/c45t12d5
lrtdi031 50060b000021dabd 50060b000021dabc A6218A           00SG325J0030  1  1  101  lrtdi031             /dev/dsk/c37t12d5
lrtdi031 50060b000021dabd 50060b000021dabc A6218A           00SG325J0030  1  1  101  lrtdi031             /dev/dsk/c41t12d5


Note: If the newly added LUN is not visible, try restart the SAN Manager with the following commands:
/opt/sanmgr/commandview/client/sbin/HA_Dial_Stop
/opt/sanmgr/commandview/client/sbin/HA_Dial_Start


Mounting the newly added LUN
Using armtopology mentioned above, you should have obtained the path to the new device. Use the pvcreate command to create a physical volume. Note that you need to use the rdsk path.

root@lrtdi031 dev> pvcreate /dev/rdsk/c33t12d5
Physical volume "/dev/rdsk/c33t12d5" has been successfully created.
root@lrtdi031 vg_test_101> mknod /dev/vg_test_101/group c 64 0x220000
root@lrtdi031 vg_test_101> vgcreate -s 32 /dev/vg_test_101 /dev/dsk/c33t12d5
Volume group "/dev/vg_test_101" has been successfully created.
Volume Group configuration for /dev/vg_test_101 has been saved in /etc/lvmconf/vg_test_101.conf

The mknod command requires a HEX number to be supplied. Experiment with different ones until one works!

Use vgdisplay to display the volume group information:
root@lrtdi031 etc> vgdisplay /dev/vg_test_101
--- Volume groups ---
VG Name                     /dev/vg_test_101
VG Write Access             read/write
VG Status                   available
Max LV                      255
Cur LV                      0
Open LV                     0
Max PV                      16
Cur PV                      1
Act PV                      1
Max PE per PV               1016
VGDA                        2
PE Size (Mbytes)            32
Total PE                    159
Alloc PE                    0
Free PE                     159
Total PVG                   0
Total Spare PVs             0
Total Spare PVs in use      0


Check the number of physical extents available, and use lvcreate to create a logical volume:

root@lrtdi031 etc> lvcreate -n lv_test_101 -l 159 /dev/vg_test_101
Logical volume "/dev/vg_test_101/lv_test_101" has been successfully created with
character device "/dev/vg_test_101/rlv_test_101".
Logical volume "/dev/vg_test_101/lv_test_101" has been successfully extended.
Volume Group configuration for /dev/vg_test_101 has been saved in /etc/lvmconf/vg_test_101.conf


Format the disk, notice the name supplied to newfs below.
root@lrtdi031 etc> newfs -F vxfs /dev/vg_test_101/rlv_test_101
    version 4 layout
    5210112 sectors, 5210112 blocks of size 1024, log size 1024 blocks
    unlimited inodes, largefiles not supported
    5210112 data blocks, 5207712 free data blocks
    159 allocation units of 32768 blocks, 32768 data blocks


Edit /etc/fstab, add the new mount point with default options, for example:
/dev/vg_test_101/lv_test_101 /test_101 vxfs delaylog 0 2


Create a directory and mount it
root@lrtdi031 etc> mkdir /test_101
root@lrtdi031 etc> mount /test_101


Use bdf to check disk space
root@lrtdi031 etc> bdf /test_101
Filesystem          kbytes    used   avail %used Mounted on
/dev/vg_test_101/lv_test_101
                   5210112    2377 4882259    0% /test_101


Deleting a LUN
Make sure all data are backed up before deleting a LUN!!
Steps to delete a LUN:
1. Disconnect all active reference to the mounted directory if any
2. Unmount the directoru: umount /test101
3. Remove the Logical Volume
root@lrtdi031 /> lvremove /dev/vg_test_101/lv_test_101
The logical volume "/dev/vg_test_101/lv_test_101" is not empty;
do you really want to delete the logical volume (y/n) : y


4. Remove the Volume Group
root@lrtdi031 /> vgremove /dev/vg_test_101

5. Remove the Physical volume
root@lrtdi031 /> pvremove /dev/rdsk/c33t12d5

6. Use armcfg to delete the LUN: armcfg -L 101 -d va7410_1
7. Or use CommandView to delete the LUN: cmdviewVA va7410_1, LUN management, Delete LUN
Extending a logical volume
Make sure all data are backed up before extending a volume!!

A logical volume can be extended with the lvextend and extendfs commands. The following example will first extend a 64m partition to 128m.

Check existing disk space
root@lrtdi003 /> df /u09
/u09                 (/dev/vg00/lv_64m    ):   120800 blocks     16104 i-nodes


Umount the mount point, and use lvextend to extend the logical volume
root@lrtdi003 /> umount /u09
root@lrtdi003 /> lvextend -L 128m /dev/vg00/lv_64m
Logical volume "/dev/vg00/lv_64m" has been successfully extended.
Volume Group configuration for /dev/vg00 has been saved in /etc/lvmconf/vg00.conf


Display the newly extended logical volume.
root@lrtdi003 /> lvdisplay  /dev/vg00/lv_64m
--- Logical volumes ---
LV Name                     /dev/vg00/lv_64m
VG Name                     /dev/vg00
LV Permission               read/write
LV Status                   available/syncd
Mirror copies               0
Consistency Recovery        MWC
Schedule                    parallel
LV Size (Mbytes)            128
Current LE                  4
Allocated PE                4
Stripes                     0
Stripe Size (Kbytes)        0
Bad block                   on
Allocation                  strict
IO Timeout (Seconds)        default


Mount the mount point and check disk space. Note: Before the next step, the OS will not see the extended space.
root@lrtdi003 /> mount /u09
root@lrtdi003 /> df /u09
/u09                 (/dev/vg00/lv_64m    ):   120792 blocks     16103 i-nodes


Run extendfs to extend the mount point by 64m, mount the mount point, and check the mount point’s capacity.
root@lrtdi003 /> umount /u09
root@lrtdi003 /> extendfs  -F vxfs -s 64m /dev/vg00/lv_64m
root@lrtdi003 /> mount /u09
root@lrtdi003 /> df /u09
/u09                 (/dev/vg00/lv_64m    ):   243642 blocks     32483 i-nodes

There are no comments on this page. [Add comment]

Valid XHTML 1.0 Transitional :: Valid CSS :: Powered by WikkaWiki