On 01/13/08 06:37, Martin Marcher wrote:
On Saturday 12 January 2008 23:38 Jan C. Nordholz wrote:
Hi,
is there a way to get the blocksize of an FS thru /proc or something
else that doesn't rely on the utils (dumpe2fs, xfs_info) to be
installed?
Not that I can see. You can query the disk geometry, but proc is too
low level to know about what filesystems are on the devices.
/proc/filesystems only gives what filesystems the kernel supports.
you could code up a C snippet:
] echo -e '#define PATH_TO_MOUNTED_FS "..."
] #include <sys/statvfs.h>
] #include <stdio.h>
] int main() { struct statvfs V; statvfs(PATH_TO_MOUNTED_FS, &V);
] printf("%u\\n", V.f_bsize); return 0; }' |
] gcc -x c - -o /tmp/fsbsq && /tmp/fsbsq
hmm looks like a starting point, I'm trying to get to that info with python,
if all else fails I think the python ctypes module should be able to get
that info thru the C interface.
Well heck, that's easy.
http://docs.python.org/lib/module-statvfs.html
http://docs.python.org/lib/os-file-dir.html#l2h-2700
$ python
Python 2.4.4 (#2, Jan 3 2008, 13:36:28)
[GCC 4.2.3 20071123 (prerelease) (Debian 4.2.2-4)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import statvfs
>>> import os
>>> os.statvfs('/')[statvfs.F_BSIZE]
4096
>>> os.statvfs('/')[statvfs.F_FRSIZE]
4096
--
Ron Johnson, Jr.
Jefferson LA USA
"I'm not a vegetarian because I love animals, I'm a vegetarian
because I hate vegetables!"
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