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Created attachment 504000[details]
Add Lustre filesystem to getconf/pathconf
Description of problem:
One of our users reported a problem with:
getconf FILESIZEBITS {path to lustre file}
returning "32" for files within Lustre, even though Lustre supports files
larger than 2^32 bytes in size. It turns out that "getconf" uses statfs()
to implement a lookup table of filesystem magic number->bits values that
does not understand the Lustre filesystem type.
Version-Release number of selected component (if applicable):
glibc-2.12
How reproducible:
always
Steps to Reproduce:
1. mount lustre filesystem
2. getconf FILESIZEBITS {path to lustre file}
Actual results:
"32"
Expected results:
"64"
Additional info:
A similar problem exists for "getconf LINK_MAX {path to lustre file}"
incorrectly returning 127 instead of 65000.
The attached patch fixes both cases for getconf. I believe that there is
already a definition for LUSTRE_SUPER_MAGIC in your version of glibc for
a long time already, because "stat -f {path to lustre}" can correctly
identify the filesystem type as "lustre".
A full patch (including statvfs() support and LUSTRE_SUPER_MAGIC) against
glibc-2.14 has been sent to the upstream glibc bugzilla:
http://sourceware.org/bugzilla/show_bug.cgi?id=12868
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
http://rhn.redhat.com/errata/RHSA-2011-1526.html