<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type"> <title></title> </head> <body bgcolor="#ffffff" text="#000000"> William Lee Irwin III wrote: <blockquote cite="mid20040901152439.GZ5492@holomorphy.com" type="cite"> <pre wrap="">On Wed, Sep 01, 2004 at 12:31:41PM +0100, Stephen Willey wrote: </pre> <blockquote type="cite"> <pre wrap="">There was a post a while back asking about 2Tb limits and the consensus was that with 2.6 you should be able to exceed the 2Tb limit with GFS. I've been trying several ways to get GFS working including using software raidtabs and LVM (seperately :) ) and everytime I try to use mkfs.gfs on a block device larger than 2Tb I get the following: Command: mkfs.gfs -p lock_dlm -t cluster1:gfs1 -j 8 /dev/md0 Result: mkfs.gfs: can't determine size of /dev/md0: File too large (/dev/md0 is obviously something different when using LVM or direct block device access) Does anyone have a working GFS filesystem larger than 2Tb (or know how to make one)? Without being able to scale past 2Tb, GFS becomes pretty useless for us... Thanks for any help, </pre> </blockquote> <pre wrap=""> Either your utility is not opening the file with O_LARGEFILE or an O_LARGEFILE check has been incorrectly processed by the kernel. Please strace the utility and include the compressed results as a MIME attachment. Remember to compress the results, as most MTA's will reject messages of excessive size, in particular, mine. -- wli </pre> </blockquote> <tt>I'll do that. Probably won't be today as I'm going to simplify the setup a lot before sending you these results. At the moment there are just too many elements in the path to the mkfs. I want to make the setup as basic as possible to narrow down the list of possible problems. Current Setup: 4 servers each serving 1Tb via GNBD 1 client importing all 4 GNBD devices That client then creates one virtual device using either CLVM or MD mkfs gives the File too large error What I'll Set Up: 1 machine with 2 x 2Tb FC RAIDs direct attached (sda and sdb) Then I'll try both LVM and MD again to check it's nothing to do with GNBD Stephen </tt> </body> </html>