1TB limit -- only SAM?

[Marc Dijkstra]

Hi all,

scenario: HP N4000 running HP-UX 11i, has 3,7TB of VA7400 attached.

Problem: Customer complaining that SAM will only create a 1TB area.

I have created a volume group with 14 150GB LUNS with the following:

vgcreate -e 65535 -s 64 /dev/(volumegroupname) /dev/dsk/(disk1)
/dev/dsk/(disk2) etc.

and then a logical volume of 1,99TB with the following:

lvcreate -n lvol1 -l 31117 /dev/(volumegroupname)

The mkfs and the mount of 2TB went thru.... so? What is the limit?? Will I only be able to WRITE to 1TB??

Please shed some light on this folks -- I am baffled

MND

[Stefan Farrelly · Accepted solution]

Here are filesystem limits in HP-UX; for you it depends on what version of JFS you are running.

HFS Supported File and File System Sizes

....... Maximum.. Maximum
HP-UX.. Supported Supported
Release File Size File System Size
10.01....... 2 GB ........... 4 GB
10.10....... 2 GB ......... 128 GB
10.20*.... 128 GB ......... 128 GB
11.00*.... 128 GB ......... 128 GB
11i*...... 128 GB ......... 128 GB

* On these releases it is possible to exceed the 128 GB limit to 256 GB, but it is not supported.



JFS (VxFS) Supported File and File System Sizes

....... ....... ........... Maximum.. Maximum
HP-UX.. JFS.... Disk....... Supported Supported
Release Version Layout..... File Size File System Size
10.01.. JFS 2.0 Version 2** .... 2 GB ........... 4 GB
10.10.. JFS 2.0 Version 2** .... 2 GB ......... 128 GB
10.20.. JFS 3.0 Version 2.. .... 2 GB ......... 128 GB
10.20.. JFS 3.0 Version 3** .. 128 GB ......... 128 GB
11.00.. JFS 3.1 Version 2.. .... 2 GB ......... 128 GB
11.00*. JFS 3.1 Version 3** .... 1 TB ........... 1 TB
11.00.. JFS 3.3 Version 2.. .... 2 GB ......... 128 GB
11.00.. JFS 3.3 Version 3** .... 1 TB ........... 1 TB
11.00.. JFS 3.3 Version 4.. .... 1 TB ........... 1 TB
11i.... JFS 3.3 Version 2.. .... 2 GB ......... 128 GB
11i.... JFS 3.3 Version 3.. .... 2 TB ........... 2 TB
11i.... JFS 3.3 Version 4** .... 2 TB ........... 2 TB

* PHKL_22719 is needed to avoid mount problems if extending or creating file systems beyond 128 GB.

http://docs.hp.com/hpux/onlinedocs/5971-2383/5971-2383_top.html

[Mark Huff II]

I too have the same issue -- I can't create a filesystem larger then 1tb through SAM but through lvextend I have no issues...

Does SAM not use lvextend?

[Scott Marer]

SAM has some built in field restrictions, that is why you see the lvextend working, but not SAM.

It looks like this issue has been noted by HP labs recently and will be corrected with a upcomming SAM cummulative patch.

[MANOJ SRIVASTAVA]

Hi

This is the link :

http://docs.hp.com/hpux/onlinedocs/5971-2383/5971-2383.html



Manoj Srivastava

[Mark Huff II]

I have increased the volume to 1.07tb through lvextend and everthing looks good on a BDF and through SAM.

Next I inceased the filesystem again this time to 1.2tb using lvextend, but now bdf won't register the new size although the command worked properly and SAM in the Logical Volume section shows the correct size.

???
Is this a big problem?
Is there a patch?

[Mark Huff II]

Sorry I'll start a new thread..

[Marc Dijkstra]

No worries Mark, good thing I still have notification on!

Otherwise I have poits to assign and don't know where they are from ;)

MND