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Disk group free space calculation

Hi 

root@murray # vxdg -g RMTSTP01_ora_arch_dg free
DISK         DEVICE       TAG          OFFSET    LENGTH    FLAGS
RMLS01_ora_arch_dg01 emcpower16s2 emcpower16   140509184 85915904  >>>>>>>>>>>140509184*512/1024 = 67 GB - calculated
RMLS01_ora_arch_dg02 emcpower17s2 emcpower17   224395264 2029824   >>>>>>>   224395264 *512/1024      =107 GB calculated
RMLS01_ora_arch_dg03 emcpower18s2 emcpower18   0         226425088 -
RMLS01_ora_arch_dg04 emcpower19s2 emcpower19   0         226425088 -

 

root@murray # vxassist -g RMLS01_ora_bin_dg maxsize
Maximum volume size: 129955840 (63455Mb)

When I crosschecked with 63455/1024 = 62GB

When I calculate 

From  vxassist -g RMLS01_ora_bin_dg maxsize it shows (63455Mb) -  62GB

From  vxdg -g RMTSTP01_ora_arch_dg free it shows 67+ 107 GB

As checked by these two outputs they have the space size shows different, please let me know why and for which command I have to use to check teh free space in disk grp?

1 Solution

Accepted Solutions
Accepted Solution!

A couple of issues here: You

A couple of issues here:

  1. You are using arch_dg in vxdg free and bin_dg in vxassist maxsize
  2. You are adding up the offsets. not the lengths.

So free space in arch_dg is:

85915904 +2029824+226425088+226425088=540795904
540795904/2048=264060 MB
264060/1024 = 257GB

Mike

 

View solution in original post

4 Replies

Hi Team, Are you able to see

Hi Team,

Are you able to see the above posts.There are some red dotted lines shows in the border of the comment fields, I don't know how it came. Please help to resolve this issue.

Hi, I've now published the

Hi, I've now published the original post for you.

Accepted Solution!

A couple of issues here: You

A couple of issues here:

  1. You are using arch_dg in vxdg free and bin_dg in vxassist maxsize
  2. You are adding up the offsets. not the lengths.

So free space in arch_dg is:

85915904 +2029824+226425088+226425088=540795904
540795904/2048=264060 MB
264060/1024 = 257GB

Mike

 

View solution in original post

FYI - In the latest SF

FYI - In the latest SF versions you can use human readable formats too

See vxdg(1M) for more info

Below is from a 6.1 system. 

[root@server101 ~]# vxdg -g tonydg free
DISK         DEVICE       TAG          OFFSET    LENGTH    FLAGS
d1           ibm_shark0_1 ibm_shark0_1 0         2027264   -
[root@server101 ~]# vxdg -g tonydg -uM free
DISK         DEVICE       TAG          OFFSET    LENGTH    FLAGS
d1           ibm_shark0_1 ibm_shark0_1 0         989.87m   -
[root@server101 ~]# vxdg -g tonydg -uG free
DISK         DEVICE       TAG          OFFSET    LENGTH    FLAGS
d1           ibm_shark0_1 ibm_shark0_1 0         0.96g     -