Re: Question about sparse files

[Martin Steigerwald <Martin@xxxxxxxxxxxx>]

Am Donnerstag 15 Juni 2006 02:58 schrieben Sie:
> Thanks Nathan and Eric.  Roger to Eric's point re: holes smaller than
> the filesystem blocksize (I suppose I could lseek past a small chunk
> while writing, it just wouldn't be a hole, right?)

Hello John,

you can test yourself. xfs_bmap tells you about the holes in a file:

martin@deepdance:~/Amiga -> /usr/sbin/xfs_bmap Messages.hardfile
Messages.hardfile:
        0: [0..18815]: 4650936..4669751
        1: [18816..21527]: hole
        2: [21528..100863]: 4672464..4751799
        3: [100864..183039]: 11899536..11981711
        4: [183040..651263]: 13764344..14232567
        5: [651264..943615]: 16747816..17040167
        6: [943616..1489407]: 18002488..18548279
        7: [1489408..2097143]: hole
        8: [2097144..2097151]: 18548280..18548287

Regards,
-- 
Martin 'Helios' Steigerwald - http://www.Lichtvoll.de
GPG: 03B0 0D6C 0040 0710 4AFA  B82F 991B EAAC A599 84C7