Re: compression disk space saving - what are your results?

2015-12-22 Thread james northrup
if you have been waiting for a particular compressor to reach linux, chances are it already has. if you are slacking with btrfs and assuming someone will port your favorite compression profile to a btrfs mount option someday, someone has thought of that too, and that's already happened as well.

Re: Possible to dedpulicate read-only snapshots for space-efficient backups

2013-05-06 Thread james northrup
tried a git based backup? sounds spot-on as a compromise prior to applying btrfs tweaks. snapshotting the git binaries would have the dedupe characteristics. On Mon, May 6, 2013 at 12:44 AM, Kai Krakow wrote: > Jan Schmidt schrieb: > >>> I'm using an bash/rsync script[1] to backup my whole syst

Re: Fwd: +1 for xz

2013-03-20 Thread james northrup
with lzo, and presumably lz4 the 128k extents of packed data are livable. on bootable thumbdrive images esp. with merged metadata I think favoring greater fragmentation vs. the current 128k would help, and giving larger files momentum to occupy more than 128k extents would also help. On Wed, Mar 2

Re: +1 for xz

2013-03-20 Thread james northrup
received here. +1 jffs2 has a lzma kernel compressor patch for 2.6 based on the lzma reference (7z?) source and lzo kernel compressor On Wed, Mar 20, 2013 at 12:27 PM, Roger Pack wrote: > > Looks like this message was initially viewed as spam because of an > HTML subpart...trying it again... >

Re: Option LABEL

2013-01-03 Thread james northrup
common labels work for me on my 3 way raid volumes. there's been no problem. what might be a problem is when i do mount LABEL=foo, btrfs dev scan is not automatic on failure. On Thu, Jan 3, 2013 at 9:01 AM, Hugo Mills wrote: > On Thu, Jan 03, 2013 at 05:29:00PM +0100, Helmut Hullen wrote: >> Ha

Re: send/receive questions

2012-12-05 Thread james northrup
more important, when will the emacs sendrecv.el be ready? On Tue, Dec 4, 2012 at 9:29 PM, Ins wrote: > Hello all, > > The implementation of send/receive is very cool. > > But I wonder whether there are any plans to support these features > below or not, > > 1. support writable subvolu

Re: cross-subvolume cp --reflink

2012-08-20 Thread james northrup
On Mon, Aug 20, 2012 at 11:08 AM, Jérôme Poulin wrote: > > On Thu, Aug 16, 2012 at 5:41 PM, james northrup > wrote: > > > > dunno if this thread is dead, but im inclined to patch in cp --reflink > > to "fdupes" prog. > > It currently does provide

Re: cross-subvolume cp --reflink

2012-08-16 Thread james northrup
dunno if this thread is dead, but im inclined to patch in cp --reflink to "fdupes" prog. It currently does provide a poor-man's dedupe via md5sum and hardlink, or delete. all the better if the distro-kernels can backport cross-snapshot reflinks sooner than later. On Sun, Apr 29, 2012 at 1:05 PM

Re: [GIT PULL] Update LZO compression

2012-08-16 Thread james northrup
looks like ARM results are inconclusive, what about just plain STAGING status for arm to let the android tweakers beat on it for a while? they're full of bandwidth for the last mile performance observations > >> There doesn't seem to be a significant difference between all three > >> variants. --