On Oct 20, 2010, at 10:14 PM, Timo Sirainen wrote: > On 21.10.2010, at 3.12, Denny Lin wrote: > >> On Wed, Oct 20, 2010 at 06:45:17PM +0100, Timo Sirainen wrote: >>> On Wed, 2010-10-20 at 13:32 -0400, Charles Marcus wrote: >>>> On 2010-10-20 12:53 PM, Timo Sirainen wrote: >>>>> Oh, interesting. I didn't know that was possible. And even better: Linux >>>>> has fallocate() that can do it for other filesystems than just XFS. Or >>>>> looks like it's only XFS and ext4 (ext3 doesn't support it). >>>> >>>> How about reiserfs (3, not 4)? >>> >>> Doesn't support. >> >> Is it possible with UFS and ZFS? > > Linux doesn't support either and my googling didn't find any FreeBSD or > Solaris interface for this feature, so I don't know. > AIX supports posix_fallocate but only for JFS2. For GPFS(what we use), the function is gpfs_prealloc.
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