How to extend the volume

[Home_224]

Dear All

My current Solaris 9.0 using the VM 4.1 version.  I have the one mount point in 90 % usage, and need to extend the volume but there is no space usage.  Therefore I add the new disk space to VM by using vxdiskadm  c3t40d1s2 

root@devuardms01 # vxdisk list
DEVICE TYPE DISK GROUP STATUS
c1t0d0s2 auto:sliced rootdg01 rootdg online
c1t1d0s2 auto:sliced rootdg02 rootdg online
c3t40d1s2 auto:cdsdisk rootdg03 rootdg online

Extend the volume dctm 

root@devuardms01 # vxprint
Disk group: rootdg

TY NAME ASSOC KSTATE LENGTH PLOFFS STATE TUTIL0 PUTIL0
dg rootdg rootdg - - - - - -

dm rootdg01 c1t0d0s2 - 143318784 - - - -
dm rootdg02 c1t1d0s2 - 143318784 - - - -
dm rootdg03 c3t40d1s2 - 51193600 - - - -

sd rootdg01-06 - ENABLED 8390112 - - - -

v dctm fsgen ENABLED 20972736 - ACTIVE - -
pl dctm-01 dctm ENABLED 20972736 - ACTIVE - -
sd rootdg01-05 dctm-01 ENABLED 20972736 0 - - -
pl dctm-02 dctm ENABLED 20972736 - ACTIVE - -
sd rootdg02-05 dctm-02 ENABLED 20972736 0 - - -

 I would like to know if there is way to extend the volume , is it need to downtime to extend the volume?  Please provide the step to do guide me.

Thank you !

[Mouse · Accepted solution]

Solaris 9.0, YaY!

Ok, here is what you need to do:

You need one more disk. The reason why is because your original volume is mirrored. To extend a mirrored disk, you need to add two disks not one.

Now once you have another disk that is went through vxdisksetup, vxdg -g rootdg adddisk <diskname> and visible in vxprint, you just run:

vxassist -g rootdg maxgrow dctm

This will give the max size you can grow the volume to

Now you can refer to something like http://www.veritas.com/docs/100029279 if you have VxFS and it will be online, for other file systems you need to check whether the file system supports online resize

[Home_224]

Hi Mouse,

Thank you for your reply !

I add the disk to the disk group and check the size 

oot@devuardms01 # vxdisk list
DEVICE TYPE DISK GROUP STATUS
c1t0d0s2 auto:sliced rootdg01 rootdg online
c1t1d0s2 auto:sliced rootdg02 rootdg online
c3t40d1s2 auto:cdsdisk rootdg03 rootdg online
c3t40d2s2 auto:cdsdisk rootdg04 rootdg online
c3t40d3s2 auto:cdsdisk - - online
c3t40d4s2 auto:cdsdisk - - online
root@devuardms01 # vxassist -g rootdg maxgrow dctm
Volume dctm can be extended by 85442560 to: 106415296 (51960Mb+1216 sectors)
root@devuardms01 #

But how can use the the rootdg03 and rootdg04 to extend the dctm by command 

Do I need to type two times?

[Mouse · Accepted solution]

if memory serves me well, something like

vxresize -g rootdg dctm 106415296 alloc=rootdg03,rootdg04

should do the trick, provided it's VxFS and it is mounted