Messages in this thread | | | From | Rob Landley <> | Subject | Re: Is there a "make hole" (truncate in middle) syscall? | Date | Thu, 4 Dec 2003 18:02:52 -0600 |
| |
On Thursday 04 December 2003 15:10, Szakacsits Szabolcs wrote: > On Thu, 4 Dec 2003, Rob Landley wrote: > > What are the downsides of holes? [...] is there a performance penalty to > > having a file with 1000 4k holes in it, etc...) > > Depends what you do, what fs you use. Using XFS XFS_IOC_GETBMAPX you might > get a huge improvement, see e.g. some numbers, > > http://marc.theaimsgroup.com/?l=reiserfs&m=105827549109079&w=2 > > The problem is, 0 general purpose (like cp, tar, cat, etc) util supports > it, you have to code your app accordingly.
Okay, I'll bite. How would one go about adding hole support to cat? :)
Adding hole support to busybox's cp and tar is on my to-do list. (Pretty far down on the list, but still...)
> Szaka
Rob - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |