Re: [zfs-discuss] about btrfs and zfs

2011-11-13 Thread Jeff Liu
On 11/13/2011 05:18 PM, Nomen Nescio wrote: LOL. Well, for what it's worth, there are three common pronunciations for btrfs. Butterfs, Betterfs, and B-Tree FS (because it's based on b-trees.) Check wikipedia. (This isn't really true, but I like to joke, after saying something like that, I

Re: [zfs-discuss] SEEK_HOLE returns the whole sparse file size?

2011-04-18 Thread Jeff liu
在 2011-4-18,下午6:03, Joerg Schilling 写道: jeff.liu jeff@oracle.com wrote: Hello List, I am trying to fetch the data/hole info of a sparse file through the lseek(SEEK_HOLE/SEEK_DATA) stuff, the result of fpathconf(..., _PC_MIN_HOLE_SIZE) is ok, so I think this interface is supported

[zfs-discuss] ZFS utility like Filefrag on linux to help analyzing the extents mapping

2011-02-16 Thread Jeff liu
Hello All, I'd like to know if there is an utility like `Filefrag' shipped with e2fsprogs on linux, which is used to fetch the extents mapping info of a file(especially a sparse file) located on ZFS? I am working on efficient sparse file detection and backup through lseek(SEEK_DATA/SEEK_HOLE)

Re: [zfs-discuss] ZFS utility like Filefrag on linux to help analyzing the extents mapping

2011-02-16 Thread Jeff liu
Hi Fajar, Thanks for your quick response, just playing it around for a while, it is very useful to me. Have a nice day! -Jeff 在 2011-2-16,下午10:16, Fajar A. Nugraha 写道: On Wed, Feb 16, 2011 at 8:53 PM, Jeff liu jeff@oracle.com wrote: Hello All, I'd like to know