Hi all,

I’ve a strange issue on a filer deeply used in FC SAN (3160 with DoT 7.3.2P6 -> it will be upgraded but for now is impossible).

On a W2K8 server running Exchange 2010 a mailbox store is hosted on a LUN with this characteristics. The LUN has been created with Snapdrive.

Volume

/vol/excmbs2FAB01Data/      155GB      100GB       54GB      65%  /vol/excmbs2FAB01Data/

/vol/excmbs2FAB01Data/.snapshot        0KB     2110MB        0KB     ---%  /vol/excmbs2FAB01Data/.snapshot

Vol options are

Nosnap on

Snap reserve/sched 0

Volume reservation “volume”

Fractional reserve 0

Autosize on

Volume autosize is currently ON for volume 'excmbs2FAB01Data'.

The volume is set to grow to a maximum of 240 GB, in increments of 10 GB.

Snap autodelete on

Asis is on with a 20% space saved

And the LUN

/vol/excmbs2FAB01Data/excmbs2FAB01Data  150.0g (161067432960)  (r/w, online, mapped)

                Comment: " "

                Serial#: W-PqRo/BiR8t

                Share: none

                Space Reservation: disabled

                Multiprotocol Type: windows_2008

                Maps: viaRPC.21:00:00:24:ff:04:15:94.SRSEDEEXCMBS2=2 viaRPC.21:00:00:24:ff:04:15:91.SRSEDEEXCMBS2=2

The only snap in the volume comes from a Snapmirror relationship and it takes roughly 2 GB

Volume excmbs2FAB01Data

working...

  %/used       %/total  date          name

----------  ----------  ------------  --------

  2% ( 2%)    1% ( 1%)  Mar 23 15:03  netapp2040fab1(0135099451)_excmbs2FAB01Data.2 (snapmirror)

As you can see the LUN is written by host for only 100 GB but sometimes it happens that the autogrow starts and on the console this messages are logged:

Thu Mar 24 16:01:39 CET [netappfa1: wafl.vol.autoSize.done:info]: Automatic increase size of volume 'excmbs2FAB06Data' by 10485760 kbytes done.

Thu Mar 24 16:04:56 CET [netappfa1: scsitarget.lun.noSpace:error]: LUN '/vol/excmbs2FAB01Data/excmbs2FAB01Data' has run out of space.

Looking for details on NOW I’ve found no docs on this issue (just one regarding rws issues) and sincerely I cannot understand the reasons of this “out of space” messages.

I’ve other LUNs configured exactly in the same manner without issues.

Any idea?

Dott. Giacomo Milazzo

Technical Account Manager

Sinergy SpA
Filiale di Roma
+ 00198. viale Regina Margherita, 269

' (+39) 3406001045 0644245272

7    (+39) 0226922048
- Giacomo.Milazzo@Sinergy.it