topic Re: Cannot open 2 gig file in Operating System - HP-UX

Cannot open 2 gig file

John Jimenez — Thu, 30 Jun 2005 16:36:58 GMT

We are having trouble opening a 2 gig file. We can tail it, but not open it. Is there any way to open this file?

=> #ll mthend.dat
-rw-rw-r-- 1 i1017 staff 2167315020 Jun 30 14:01 elig_n60.dat
HOST: /monthend/tmp
=> #pg mthend.dat
mthend.dat: Value too large to be stored in data type

Re: Cannot open 2 gig file

John Jimenez — Thu, 30 Jun 2005 16:45:13 GMT

whoops it should have read
=> #ll mthend.dat
-rw-rw-r-- 1 i1017 staff 2167315020 Jun 30 14:01 mthend.dat
HOST: /monthend/tmp
=> #pg mthend.dat
mthend.dat: Value too large to be stored in data type

It has large files enabled.

/dev/vg07/lvol7 /monthend vxfs rw,suid,largefiles,delaylog,datainlog 0 2

Re: Cannot open 2 gig file

KVK — Thu, 30 Jun 2005 16:56:18 GMT

Hi John ,

You must enable the LARGEFILES option for the file system .that u can check by

#fstyp -v /dev/vgXX/lvolX

Still if you have the same problem just try with #cat ==>Eventhough the same error contact your application vendor which it's created the your 2GB file

Since HP-UX the largefiles above 2GB

Cheers

Re: Cannot open 2 gig file

A. Clay Stephenson — Thu, 30 Jun 2005 16:56:49 GMT

A number of utilities still have internal limits eventhough the filesystem itself does not. Frankly, I can't imagine pg'ing or more'ing a 2GB+ file. You should note that utilities like vi, for example, would still have problem because you could be simply hitting maxdsiz (or maxdsiz_64bit if running a 64-bit application). I suspect that pg is a 32-bit application. You might try adding a starting linenumber to pg.

Re: Cannot open 2 gig file

John Jimenez — Thu, 30 Jun 2005 17:27:13 GMT

Clay,
maxdsiz is = 268435456
maxdsiz_64 is = 1073741824

We have data files that are over 10 gig. But the files that we export at
month end are getting larger and larger and this could be the first file over
2 gig that is in a text file.

CAT works yes. This file needs to open up in a C program. A while back we had a different issue HP mentioned using the fopen instead of open and to use the +DA2.)W compiler option. When we use this it produces a core dump

Re: Cannot open 2 gig file

John Jimenez — Thu, 30 Jun 2005 17:29:13 GMT

That was the 64 bit application (+DA2.0W) compiler option

Re: Cannot open 2 gig file

John Jimenez — Thu, 30 Jun 2005 18:14:46 GMT

Thanks again for the help. Susan at HP prvided us with Document ID WP1100001 and the programmer was able to use the open64 to open it up.

Re: Cannot open 2 gig file

John Jimenez — Thu, 30 Jun 2005 18:15:25 GMT

I am closing this thread now. thanks again