Re: Another defrag question

2013-02-21 Thread Bardur Arantsson
On 02/21/2013 10:56 PM, David Sterba wrote: > On Thu, Feb 21, 2013 at 09:58:16PM +0100, Bardur Arantsson wrote: >> On 02/21/2013 06:47 PM, Swâmi Petaramesh wrote: >>> Le 21/02/2013 18:25, Hugo Mills a écrit : Correct. But btrfs isn't at that stage yet. It's getting visibly closer, but it'

Re: Another defrag question

2013-02-21 Thread David Sterba
On Thu, Feb 21, 2013 at 09:58:16PM +0100, Bardur Arantsson wrote: > On 02/21/2013 06:47 PM, Swâmi Petaramesh wrote: > > Le 21/02/2013 18:25, Hugo Mills a écrit : > >> Correct. But btrfs isn't at that stage yet. It's getting visibly > >> closer, but it's not quite there. Hence the very strong recomm

Re: Another defrag question

2013-02-21 Thread Johannes Hirte
On Thu, 21 Feb 2013 18:47:28 +0100 Swâmi Petaramesh wrote: > Le 21/02/2013 18:25, Hugo Mills a écrit : > > Correct. But btrfs isn't at that stage yet. It's getting visibly > > closer, but it's not quite there. Hence the very strong > > recommendation to keep up with the latest code. Hugo. > > T

Re: Another defrag question

2013-02-21 Thread Bardur Arantsson
On 02/21/2013 06:47 PM, Swâmi Petaramesh wrote: > Le 21/02/2013 18:25, Hugo Mills a écrit : >> Correct. But btrfs isn't at that stage yet. It's getting visibly >> closer, but it's not quite there. Hence the very strong recommendation >> to keep up with the latest code. Hugo. > > The matter is tha

Re: Another defrag question

2013-02-21 Thread Hugo Mills
On Thu, Feb 21, 2013 at 06:47:28PM +0100, Swâmi Petaramesh wrote: > Le 21/02/2013 18:25, Hugo Mills a écrit : > > Correct. But btrfs isn't at that stage yet. It's getting visibly > > closer, but it's not quite there. Hence the very strong recommendation > > to keep up with the latest code. Hugo. >

Re: Another defrag question

2013-02-21 Thread Swâmi Petaramesh
Le 21/02/2013 18:25, Hugo Mills a écrit : > Correct. But btrfs isn't at that stage yet. It's getting visibly > closer, but it's not quite there. Hence the very strong recommendation > to keep up with the latest code. Hugo. The matter is that BTRFS had many early adopters just because it is - and

Re: Another defrag question

2013-02-21 Thread Swâmi Petaramesh
Le 21/02/2013 17:38, Hugo Mills a écrit : > Plus, if something does go wrong with your FS, and you're running an > older kernel, you'll get limited amounts of sympathy, because quite a > lot of the problems people encounter with older kernels have already > been fixed in newer ones. The matter, as

Re: Another defrag question

2013-02-21 Thread Hugo Mills
On Thu, Feb 21, 2013 at 06:03:17PM +0100, Swâmi Petaramesh wrote: > Le 21/02/2013 17:38, Hugo Mills a écrit : > > Plus, if something does go wrong with your FS, and you're running an > > older kernel, you'll get limited amounts of sympathy, because quite a > > lot of the problems people encounter w

Re: Another defrag question

2013-02-21 Thread Hugo Mills
On Thu, Feb 21, 2013 at 05:01:30PM +0100, Swâmi Petaramesh wrote: > Le 21/02/2013 16:54, Calvin Walton a écrit : > > You really should upgrade your kernel, however. 3.5.0 is rather old in > > btrfs-years! Lots of fixes have gone into newer kernels. > > Hi Calvin, > > I expect Ubuntu 13.04 to come

Re: Another defrag question

2013-02-21 Thread Blair Zajac
On 02/21/2013 08:01 AM, Swâmi Petaramesh wrote: Le 21/02/2013 16:54, Calvin Walton a écrit : You really should upgrade your kernel, however. 3.5.0 is rather old in btrfs-years! Lots of fixes have gone into newer kernels. Hi Calvin, I expect Ubuntu 13.04 to come with kernel 3.7 in April. 13.

Re: Another defrag question

2013-02-21 Thread Swâmi Petaramesh
Le 21/02/2013 16:54, Calvin Walton a écrit : > You really should upgrade your kernel, however. 3.5.0 is rather old in > btrfs-years! Lots of fixes have gone into newer kernels. Hi Calvin, I expect Ubuntu 13.04 to come with kernel 3.7 in April. Having Ubuntu kernel upgrades every 6 months (and sev

Re: Another defrag question

2013-02-21 Thread Swâmi Petaramesh
Le 21/02/2013 16:50, Liu Bo a écrit : > Well, there is already a patch which addresses your concern and it's > 'snapshot-aware defrag' feature and now in v6, it's not merged yet. > thanks, liubo Hi Liu, So should I understand that, even though the manpage states that the issue is for kernels <=

Re: Another defrag question

2013-02-21 Thread Calvin Walton
On Thu, 2013-02-21 at 16:46 +0100, Swâmi Petaramesh wrote: > Hi again, > > Having numerous snapshots, I prefer to ask rather than take the risk of > exploding my storage space, better safe than sorry ;-) > > "man btrfs" states : > > « NOTE: defragmenting with kernels up to 2.6.37 will unlink COW

Re: Another defrag question

2013-02-21 Thread Liu Bo
On Thu, Feb 21, 2013 at 04:46:14PM +0100, Swâmi Petaramesh wrote: > Hi again, > > Having numerous snapshots, I prefer to ask rather than take the risk of > exploding my storage space, better safe than sorry ;-) > > "man btrfs" states : > > « NOTE: defragmenting with kernels up to 2.6.37 will unl

Another defrag question

2013-02-21 Thread Swâmi Petaramesh
Hi again, Having numerous snapshots, I prefer to ask rather than take the risk of exploding my storage space, better safe than sorry ;-) "man btrfs" states : « NOTE: defragmenting with kernels up to 2.6.37 will unlink COW-ed copies of data, don't use it if you use snapshots, have deduplicat