[OmniOS-discuss] Raidz2 autoexpand=on not working

[Muhammad Yousuf Khan]

Raidz2  size is not expanding to the lowest attached drives. here is what i
mean.
first i had . 2x160GB drives and 2x250 drives and per the rule i have got
300GB of working space as Raidz2 consider smallest hard drives and demote
the bigger one.

now i replaced 2x160 with  a 500GB and a 320GB drive respectively here is
detail.

AVAILABLE DISK SELECTIONS:
       0. c1d0 <Unknown-Unknown-0001 cyl 4862 alt 2 hd 255 sec 63>
          /pci at 0,0/pci-ide at 1f,1/ide at 0/cmdk at 0,0
       1. c2t0d0 <ATA-ST3320613AS-CC2J-298.09GB>
          /pci at 0,0/pci1028,1c1 at 1f,2/disk at 0,0
       2. c2t1d0 <ATA-WDC WD5001AALS-0-3B01-465.76GB>
          /pci at 0,0/pci1028,1c1 at 1f,2/disk at 1,0
       3. c2t2d0 <ATA-Hitachi HDP72502-A5FA-232.89GB>
          /pci at 0,0/pci1028,1c1 at 1f,2/disk at 2,0
       4. c2t3d0 <ATA-Hitachi HDP72502-A5FA-232.89GB>
          /pci at 0,0/pci1028,1c1 at 1f,2/disk at 3,0

and here is my zpool status

        NAME        STATE     READ WRITE CKSUM
        acipool     ONLINE       0     0     0
          raidz2-0  ONLINE       0     0     0
            c2t0d0  ONLINE       0     0     0
            c2t1d0  ONLINE       0     0     0
            c2t2d0  ONLINE       0     0     0
            c2t3d0  ONLINE       0     0     0

root at omni:~# zpool get all acipool | grep  auto
acipool  autoreplace            off                    default
acipool  autoexpand             on                     local


so as per the rule, it should have consider the lowest capacity drive x 2
and in my case it should be 250GBx2 = 500GB however the df output still
shows the old 300GB size.

Filesystem                      Size  Used Avail Use% Mounted on
rpool/ROOT/napp-it-0.9b3         27G   19G  8.3G  70% /
swap                             13G  352K   13G   1% /etc/svc/volatile
/usr/lib/libc/libc_hwcap1.so.1   27G   19G  8.3G  70% /lib/libc.so.1
swap                             13G  8.0K   13G   1% /tmp
swap                             13G   52K   13G   1% /var/run
rpool/export/home               8.3G   31K  8.3G   1% /export/home
rpool                           8.3G   39K  8.3G   1% /rpool
acipool                         284G   25G  259G   9% /acipool



you can see my acipool is almost 300GB which is reflecting the old size.
but as per the Raiz2 rule it should have been 500GB.

i tried zpool export/import and also "zpool online -e poolname drivename"
and tried this on all drives but still no luck
i also restarted the server it also didnt work. however i had a ubuntu
destkop on which -e function was working correctly.

any help will be highly appreciated.

Thanks,

Myk
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