Need Filesystem > 128GB

[Rob Viets]

I am on HP-UX 10.20 and ran up against the 128 GB lvol limitation.

I need to go greater, and am willing to go to 11.0 and use Online JFS v3.3.

I would prefer not to go to 64 bit.

Can I have a filesystem greater then 128 GB on HPUX 11.0 32 bit?

[Rita C Workman]

I remember similar question about this and found the url (below). I think it will help answer your question.

http://my1.itrc.hp.com/cm/QuestionAnswer/1,1150,0xcd727e990647d4118fee0090279cd0f9!0,00.html

/rcw

[James R. Ferguson]

Rob:

See this thread, in particular:

http://my1.itrc.hp.com/cm/QuestionAnswer/1,1150,0x00a983667c40d4118feb0090279cd0f9,00.html

...JRF...

[Dan Hetzel · Accepted solution]

Hi Rob

128Gb is the limit for HP-UX 10.20.
You can have filesystems as large as 1Tb with HP-UX 11.0
32 or 64 bit has no influence on the filesystem size limit.

Best regards,

Dan

[Andy Monks]

Rob,

As has already been stated 128GB is the limit at 10.20. However, lvm will obviously allow you to extend the lvol to whatever you want. The annoying bit at this point, is that jfs commands will also allow you to extend the filesystem. However, you won't be able to mount it afterwards, so DON'T do it!

[Darrel Louis]

See the url Rita specified, see Andy Monks his notes in both.

Under 10.20 you can extend your LV above 128Gb, but it isn't supported by HP.
As we all know supported means not tested.

Is there a reason why you don't want to go to 64-bit??

A 64-bit system can run 32-bit applications, if that is your worries!!

[Rob Viets]

Thanks for the help everyone.

I have read (here in the forum) that 11.0 at 32 bit could only do 128 GB filesystems. I have also been told that I could do 1 TB with the 32 bit OS. I believe now that I can go to 11.0 32 bit and set up my 256 GB filesystem.

My resistance to going to 64 bit is mainly because I haven't and may not have the time to fully research the differences. From HP World, I got the impression that 64 bit would not buy me anything since I have no need to address large areas of memory, I have 1 GB of RAM, etc. I was also under the impression that we would need to re-compile our C, and COBOL programs. People tell me the executables will work okay. I'm not sure about the impact it would have on future C development, however. Basically, it is the fear of the unknown keeping me from 64 bit.

[Rob Viets]

I did it. I upgraded to 11.0 32-bit, installed JFS version 3.3, and created by 200 GB filesystem.

Thanks for the help!