Storage foundation linux - increase lun

[Mattiuzzo]

Hi All,

I am new on storage foundation solution, and also on the company.

I have a oracle database running storage foundation and i just need increase a database lun.

Do i need to do something on storage foundation configuration? or can i just increase the size by storage side and reboot my linux?

The luns is one of resources that storage foundation manage.

Thank you

[mikebounds]

You have to add space to diskgroup and then increase the filesystem (and volume) in the diskgroup.

You have 2 choices for adding storage to diskgroup:

1. Expand existing LUN and then use "vxdisk resize" to recognise new LUN size
2. Add an additional LUN using:
   vxdisksetup -i newdisk
   vxdg -g diskgroup adddisk newdisk

Note, before doing either of above, use "vxdctl enable" to scan for new disks and to see names of disks use "vxdisk -o alldgs list"

To expand filesystem (and volume) use:

vxresize -g diskgroup volume +size

Where you can get volume name from df (string after /dsk/ in block device is diskgroup and the next(last) string is volume) or "vxprint -v"

size can be specified used a suffix of m for MB or g for GB.

All this can be done online, so you do not need to reboot and if you do reboot, this will not be all done automatically.

Mike

[Mattiuzzo]

Hi Mike, thanks a lot for your answer!

I found this link but it has some different commans you have teach me. (https://sort.symantec.com/public/documents/sfha/6.1/solaris/productguides/html/sf_admin/ch05s03.htm)

I have builded the commands bellow based on my configuration and your guide. Could you please check?

1-expand the Lun on EMC storage
2-vxdctl enable
3-vxresize -g oradg01 datavol01 +354
4-vxresize -g oradg02 datavol02 +352

What about the commands bellow from link?

1 - Make Veritas Volume Manager (VxVM) aware of the new LUN size.

# vxdisk -g dg1 resize 3PARDATA0_1

2 - Calculate the new maximum volume size:

# vxassist -g dg1 -b maxgrow vol1

3 - Grow the volume and the file system to the desired size:

# vxresize -b -F vxfs -g dg1 vol1 200g

Which is the correct form to expand the LUN?

Follow my informations:

###############################################################################
[root@DB01 ~]# vxdisk -o alldgs list
DEVICE       TYPE            DISK         GROUP        STATUS
emcpowera    auto:cdsdisk    emcpowera    oradg01      online
emcpowerb    auto:cdsdisk    emcpowerb    oradg02      online
sda          auto:none       -            -            online invalid
###############################################################################
[root@DB01 ~]# vxprint -v
Disk group: oradg01

TY NAME         ASSOC        KSTATE   LENGTH   PLOFFS   STATE    TUTIL0  PUTIL0
v  datavol01    fsgen        ENABLED  1404913664 -      ACTIVE   -       -

Disk group: oradg02

TY NAME         ASSOC        KSTATE   LENGTH   PLOFFS   STATE    TUTIL0  PUTIL0
v  datavol02    fsgen        ENABLED  1408817152 -      ACTIVE   -       -
###############################################################################
[root@DB01 ~]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/sda7              29G  9.3G   18G  35% /
/dev/sda6              29G   16G   12G  60% /oracle
/dev/sda2             284G   12G  258G   5% /data
/dev/sda3             157G  4.5G  144G   3% /data1
/dev/sda1              99M   13M   82M  14% /boot
tmpfs                  32G     0   32G   0% /dev/shm
tmpfs                 4.0K     0  4.0K   0% /dev/vx
/dev/vx/dsk/oradg01/datavol01
                      670G  602G   65G  91% /oradata01
/dev/vx/dsk/oradg02/datavol02
                      672G  637G   33G  96% /oradata02
###############################################################################

Thanks in advance

[mikebounds · Accepted solution]

You will need to:

1. vxprint -d (see current disk sizes)
2. expand the 2 Luns on EMC storage
3. vxdctl enable 
4. vxdisk -g oradg01 resize emcpowera (grow disk)
5. vxdisk -g oradg02 resize emcpowerb (grow disk)
6. vxprint -d (check disk sizes have increased)
7. check space available to grow datavol01:
   vxassist -g oradg01 maxgrow datavol01
8. check space available to grow datavol02:
   vxassist -g oradg02 maxgrow datavol02
9. Grow filesystem (size you can grow will depend on output from 7):
   vxresize -g oradg01 datavol01 +354
10. Grow filesystem (size you can grow will depend on output from 8):
    vxresize -g oradg02 datavol02 +352

Note on your systems you have 2 disks each containing 1 filesystem, but you could have 2 filesystems on one disk - this is why growing disks and filesystems are separate steps 

Mike