[PATCH] End a btrfsctl err msg "-s requires an arg" with a newline.

2009-06-04 Thread Hu Tao
Signed-off-by: Hu Tao --- btrfsctl.c |2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/btrfsctl.c b/btrfsctl.c index b323818..fa401ab 100644 --- a/btrfsctl.c +++ b/btrfsctl.c @@ -109,7 +109,7 @@ int main(int ac, char **av) for (i = 1; i < ac; i++) {

Re: New experimental btrfs branch ready for testing

2009-06-04 Thread Chris Mason
On Thu, Jun 04, 2009 at 02:19:00PM -0500, Steven Pratt wrote: I've setup git branches called newformat where you can pull the new code. For the kernel (based on 2.6.30-rc7): git pull git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable.git newforma

Re: New experimental btrfs branch ready for testing

2009-06-04 Thread Steven Pratt
Chris Mason wrote: On Thu, Jun 04, 2009 at 02:02:20PM -0500, Steven Pratt wrote: Chris Mason wrote: Hello everyone, Yan Zheng has been doing some major surgery to the back references and extent allocation code, tackling bottlenecks in the code that tracks extents. It scales better wit

Re: New experimental btrfs branch ready for testing

2009-06-04 Thread Chris Mason
On Thu, Jun 04, 2009 at 02:02:20PM -0500, Steven Pratt wrote: > Chris Mason wrote: >> Hello everyone, >> >> Yan Zheng has been doing some major surgery to the back references and >> extent allocation code, tackling bottlenecks in the code that tracks >> extents. It scales better with many snapshot

Re: New experimental btrfs branch ready for testing

2009-06-04 Thread Steven Pratt
Chris Mason wrote: Hello everyone, Yan Zheng has been doing some major surgery to the back references and extent allocation code, tackling bottlenecks in the code that tracks extents. It scales better with many snapshots and performs better in the common case of no snapshots at all. THE NEW CO

Re: Data Deduplication with the help of an online filesystem check

2009-06-04 Thread Chris Mason
On Thu, Jun 04, 2009 at 02:03:50PM +0200, Thomas Glanzmann wrote: > Chris, > > > It is a counter and a back reference. With Yan Zheng's new format > > work, the limit is not 2^64. > > That means that there is one back reference for every use of the block? > Where is this back reference stored? (

Re: Data Deduplication with the help of an online filesystem check

2009-06-04 Thread Thomas Glanzmann
Chris, > It is a counter and a back reference. With Yan Zheng's new format > work, the limit is not 2^64. That means that there is one back reference for every use of the block? Where is this back reference stored? (I'm asking because if one back reference for every copy is stored, it can obviou

Re: Data Deduplication with the help of an online filesystem check

2009-06-04 Thread Chris Mason
On Thu, Jun 04, 2009 at 10:49:19AM +0200, Thomas Glanzmann wrote: > Hello Chris, > > > > My question is now, how often can a block in btrfs be refferenced? > > > The exact answer depends on if we are referencing it from a single > > file or from multiple files. But either way it is roughly 2^32

Re: Data Deduplication with the help of an online filesystem check

2009-06-04 Thread Thomas Glanzmann
Hello Chris, > > My question is now, how often can a block in btrfs be refferenced? > The exact answer depends on if we are referencing it from a single > file or from multiple files. But either way it is roughly 2^32. could you please explain to me what underlying datastructure is used to mon