Increasing the jfs2 file system size on AIX beyond 64GB

In my earlier post I talk about increasin the size of a file system on AIX

http://shettymayur.blogspot.com/2011/01/how-to-increase-file-system-size-on-aix.html

In this post I created a 100GB SAN volume, which I mapped to my AIX 7.1 host.

Using smitty I created a 64GB jfs2 file system on the volume.

/dev/fslv02       64.00     52.61   18%     5459     1% /bigfs isvp14_ora> lslv fslv02 LOGICAL VOLUME:     fslv02                 VOLUME GROUP:   bigfs LV IDENTIFIER:      00f62a6b00004c0000000136568e8fcf.2 PERMISSION:     read/write VG STATE:           active/complete        LV STATE:       opened/syncd TYPE:               jfs2                   WRITE VERIFY:   off MAX LPs:            512                    PP SIZE:        128 megabyte(s) COPIES:             1                      SCHED POLICY:   parallel LPs:                512                    PPs:            512 STALE PPs:          0                      BB POLICY:      relocatable INTER-POLICY:       minimum                RELOCATABLE:    yes INTRA-POLICY:       middle                 UPPER BOUND:    32 MOUNT POINT:        /bigfs                 LABEL:          /bigfs MIRROR WRITE CONSISTENCY: on/ACTIVE EACH LP COPY ON A SEPARATE PV ?: yes Serialize IO ?:     NO isvp14_ora>

The volume that was mapped to the host was 100GB, but when I tried to increase the file system size beyond 64GB I get the below message.

isvp14_ora> chfs -a size=90G /bigfs 0516-787 extendlv: Maximum allocation for logical volume fslv02 is 512.

We see that it's complaining that the maximum number LP is 512. LV can go up to 512 LPs, each LP is 128 MB , so  512 x 128MB= 64 GB

Below we below see the command to increase the LPs to 1024, this will give us a max file system of 128 GB

isvp14_ora> chlv -x'1024' fslv02 isvp14_ora> lslv fslv02 LOGICAL VOLUME:     fslv02                 VOLUME GROUP:   bigfs LV IDENTIFIER:      00f62a6b00004c0000000136568e8fcf.2 PERMISSION:     read/write VG STATE:           active/complete        LV STATE:       opened/syncd TYPE:               jfs2                   WRITE VERIFY:   off MAX LPs:            1024                   PP SIZE:        128 megabyte(s) COPIES:             1                      SCHED POLICY:   parallel LPs:                512                    PPs:            512 STALE PPs:          0                      BB POLICY:      relocatable INTER-POLICY:       minimum                RELOCATABLE:    yes INTRA-POLICY:       middle                 UPPER BOUND:    32 MOUNT POINT:        /bigfs                 LABEL:          /bigfs MIRROR WRITE CONSISTENCY: on/ACTIVE EACH LP COPY ON A SEPARATE PV ?: yes Serialize IO ?:     NO isvp14_ora> chfs -a size=90G /bigfs Filesystem size changed to 188743680 isvp14_ora> df -g /dev/fslv02       90.00     78.60   13%     5459     1% /bigfs