Ext4 supports it, and you can use fallocate(2) with flag FALLOC_FL_PUNCH_HOLE to dealloc space of a specific file (please see `man 2 fallocate` for more info). You can use `fallocate` cmdline program to test it. Ex: fallocate -p -o 1024 -l 4096 <filename> fallocate is available on ext4 since linux 3.1 afaik About Enterprise distros, it's usually better to contact the customer support to get information about availability/supportability of a specific feature. Cheers On Tue, Jan 22, 2013 at 09:34:59AM -0500, Bradley C. Kuszmaul wrote: > Hi, > > Do any of the ext file systems support hole punching? If so, do the > redhat distributions support it? Can someone provide an example of a > program that punches a hole in a file in an ext4 file system? > > -Bradley > -- > To unsubscribe from this list: send the line "unsubscribe linux-ext4" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Carlos -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
