Re: btrfs filesystem keeps allocating new chunks for no apparent reason

On 2017-04-11 05:55, Adam Borowski wrote: On Tue, Apr 11, 2017 at 06:01:19AM +0200, Kai Krakow wrote: Yes, I know all this. But I don't see why you still want noatime or relatime if you use lazytime, except for super-optimizing. Lazytime gives you POSIX conformity for a problem that the other

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

On Tue, Apr 11, 2017 at 06:01:19AM +0200, Kai Krakow wrote: > Yes, I know all this. But I don't see why you still want noatime or > relatime if you use lazytime, except for super-optimizing. Lazytime > gives you POSIX conformity for a problem that the other options only > tried to solve. (Besides

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

Am Mon, 10 Apr 2017 15:43:57 -0400 schrieb "Austin S. Hemmelgarn" : > On 2017-04-10 14:18, Kai Krakow wrote: > > Am Mon, 10 Apr 2017 13:13:39 -0400 > > schrieb "Austin S. Hemmelgarn" : > > > >> On 2017-04-10 12:54, Kai Krakow wrote: > [...] >

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

Am Tue, 11 Apr 2017 01:45:32 +0200 schrieb "Janos Toth F." : > >> The command-line also rejects a number of perfectly legitimate > >> arguments that BTRFS does understand too though, so that's not much > >> of a test. > > > > Which are those? I didn't encounter any...

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

>> The command-line also rejects a number of perfectly legitimate >> arguments that BTRFS does understand too though, so that's not much >> of a test. > > Which are those? I didn't encounter any... I think this bug still stands unresolved (for 3+ years, probably because most people use init-rd/fs

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

On Mon, Apr 10, 2017 at 03:43:57PM -0400, Austin S. Hemmelgarn wrote: > On 2017-04-10 14:18, Kai Krakow wrote: > * strictatime, lazytime: Both atime and mtime updates happen, but they > actual update may not hit the disk for up to 24 hours (this will let mutt > work correctly as long as your

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

On 2017-04-10 14:18, Kai Krakow wrote: Am Mon, 10 Apr 2017 13:13:39 -0400 schrieb "Austin S. Hemmelgarn" : On 2017-04-10 12:54, Kai Krakow wrote: Am Mon, 10 Apr 2017 18:44:44 +0200 schrieb Kai Krakow : Am Mon, 10 Apr 2017 08:51:38 -0400 schrieb

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

Am Mon, 10 Apr 2017 13:13:39 -0400 schrieb "Austin S. Hemmelgarn" : > On 2017-04-10 12:54, Kai Krakow wrote: > > Am Mon, 10 Apr 2017 18:44:44 +0200 > > schrieb Kai Krakow : > > > >> Am Mon, 10 Apr 2017 08:51:38 -0400 > >> schrieb "Austin S.

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

On 2017-04-10 12:54, Kai Krakow wrote: Am Mon, 10 Apr 2017 18:44:44 +0200 schrieb Kai Krakow : Am Mon, 10 Apr 2017 08:51:38 -0400 schrieb "Austin S. Hemmelgarn" : On 2017-04-10 08:45, Kai Krakow wrote: Am Mon, 10 Apr 2017 08:39:23 -0400 schrieb

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

Am Mon, 10 Apr 2017 18:44:44 +0200 schrieb Kai Krakow : > Am Mon, 10 Apr 2017 08:51:38 -0400 > schrieb "Austin S. Hemmelgarn" : > > > On 2017-04-10 08:45, Kai Krakow wrote: > > > Am Mon, 10 Apr 2017 08:39:23 -0400 > > > schrieb "Austin S. Hemmelgarn"

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

Am Mon, 10 Apr 2017 08:51:38 -0400 schrieb "Austin S. Hemmelgarn" : > On 2017-04-10 08:45, Kai Krakow wrote: > > Am Mon, 10 Apr 2017 08:39:23 -0400 > > schrieb "Austin S. Hemmelgarn" : > > > >> They've been running BTRFS > >> with LZO compression, the

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

On 2017-04-10 08:45, Kai Krakow wrote: Am Mon, 10 Apr 2017 08:39:23 -0400 schrieb "Austin S. Hemmelgarn" : They've been running BTRFS with LZO compression, the SSD allocator, atime disabled, and mtime updates deferred (lazytime mount option) the whole time, so it may be a

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

Am Mon, 10 Apr 2017 08:39:23 -0400 schrieb "Austin S. Hemmelgarn" : > They've been running BTRFS > with LZO compression, the SSD allocator, atime disabled, and mtime > updates deferred (lazytime mount option) the whole time, so it may be > a slightly different use case

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

On 2017-04-09 19:23, Hans van Kranenburg wrote: On 04/08/2017 01:16 PM, Hans van Kranenburg wrote: On 04/07/2017 11:25 PM, Hans van Kranenburg wrote: Ok, I'm going to revive a year old mail thread here with interesting new info: [...] Now, another surprise: From the exact moment I did mount

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

On 04/08/2017 01:16 PM, Hans van Kranenburg wrote: > On 04/07/2017 11:25 PM, Hans van Kranenburg wrote: >> Ok, I'm going to revive a year old mail thread here with interesting new >> info: >> >> [...] >> >> Now, another surprise: >> >> From the exact moment I did mount -o remount,nossd on this

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

On 04/08/2017 01:16 PM, Hans van Kranenburg wrote: > On 04/07/2017 11:25 PM, Hans van Kranenburg wrote: >> Ok, I'm going to revive a year old mail thread here with interesting new >> info: >> >> [...] >> >> Now, another surprise: >> >> From the exact moment I did mount -o remount,nossd on this

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

On 04/07/2017 11:25 PM, Hans van Kranenburg wrote: > Ok, I'm going to revive a year old mail thread here with interesting new > info: > > [...] > > Now, another surprise: > > From the exact moment I did mount -o remount,nossd on this filesystem, > the problem vanished. > >

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

Hans van Kranenburg posted on Fri, 07 Apr 2017 23:25:29 +0200 as excerpted: > So, this is why putting your /var/log, /var/lib/mailman and /var/spool > on btrfs is a terrible idea. > > Because the allocator keeps walking forward every file that is created > and then removed leaves a blank spot

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

[ ... ] >>> I've got a mostly inactive btrfs filesystem inside a virtual >>> machine somewhere that shows interesting behaviour: while no >>> interesting disk activity is going on, btrfs keeps >>> allocating new chunks, a GiB at a time. [ ... ] > Because the allocator keeps walking forward every

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

Ok, I'm going to revive a year old mail thread here with interesting new info: On 05/31/2016 03:36 AM, Qu Wenruo wrote: > > > Hans van Kranenburg wrote on 2016/05/06 23:28 +0200: >> Hi, >> >> I've got a mostly inactive btrfs filesystem inside a virtual machine >> somewhere that shows

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

On 06/10/2016 07:07 PM, Henk Slager wrote: On Thu, Jun 9, 2016 at 5:41 PM, Duncan <1i5t5.dun...@cox.net> wrote: Hans van Kranenburg posted on Thu, 09 Jun 2016 01:10:46 +0200 as excerpted: The next question is what files these extents belong to. To find out, I need to open up the extent items

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

On Thu, Jun 9, 2016 at 5:41 PM, Duncan <1i5t5.dun...@cox.net> wrote: > Hans van Kranenburg posted on Thu, 09 Jun 2016 01:10:46 +0200 as > excerpted: > >> The next question is what files these extents belong to. To find out, I >> need to open up the extent items I get back and follow a

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

On Wed, Jun 8, 2016 at 5:10 PM, Hans van Kranenburg wrote: > Hi list, > > > On 05/31/2016 03:36 AM, Qu Wenruo wrote: >> >> >> >> Hans van Kranenburg wrote on 2016/05/06 23:28 +0200: >>> >>> Hi, >>> >>> I've got a mostly inactive btrfs filesystem inside a virtual

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

Hans van Kranenburg posted on Thu, 09 Jun 2016 01:10:46 +0200 as excerpted: > The next question is what files these extents belong to. To find out, I > need to open up the extent items I get back and follow a backreference > to an inode object. Might do that tomorrow, fun. > > To be honest, I

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

On 06/09/2016 10:52 AM, Marc Haber wrote: On Thu, Jun 09, 2016 at 01:10:46AM +0200, Hans van Kranenburg wrote: So, instead of being the cause, apt-get update causing a new chunk to be allocated might as well be the result of existing ones already filled up with too many fragments. The next

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

On Thu, Jun 09, 2016 at 01:10:46AM +0200, Hans van Kranenburg wrote: > So, instead of being the cause, apt-get update causing a new chunk to be > allocated might as well be the result of existing ones already filled up > with too many fragments. > > The next question is what files these extents

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

Hi list, On 05/31/2016 03:36 AM, Qu Wenruo wrote: Hans van Kranenburg wrote on 2016/05/06 23:28 +0200: Hi, I've got a mostly inactive btrfs filesystem inside a virtual machine somewhere that shows interesting behaviour: while no interesting disk activity is going on, btrfs keeps allocating

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

Hans van Kranenburg wrote on 2016/05/06 23:28 +0200: Hi, I've got a mostly inactive btrfs filesystem inside a virtual machine somewhere that shows interesting behaviour: while no interesting disk activity is going on, btrfs keeps allocating new chunks, a GiB at a time. A picture, telling

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

Hans van Kranenburg posted on Mon, 30 May 2016 23:18:20 +0200 as excerpted: >> Snip the dump, but curious as a user (not a dev) what command you used. >> Presumably one of the debug commands which I'm not particularly >> familiar with, but I wasn't aware it was even possible. > > It's the output

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

On 05/30/2016 09:55 PM, Duncan wrote: Hans van Kranenburg posted on Mon, 30 May 2016 13:07:26 +0200 as excerpted: [Please don't post "upside down". Reply in context under the quoted point, here the whole post, you're replying to. It makes further replies in context far easier. =:^) I've

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

Hans van Kranenburg posted on Mon, 30 May 2016 13:07:26 +0200 as excerpted: [Please don't post "upside down". Reply in context under the quoted point, here the whole post, you're replying to. It makes further replies in context far easier. =:^) I've pasted your update at the bottom here.] >

Re: btrfs filesystem keeps allocating new chunks for no apparent reason

Hi, since it got any followup and since I'm bold enough to bump it one more time... :) I really don't understand the behaviour I described. Does it ring a bell with anyone? This system is still allocating new 1GB data chunks every 1 or 2 days without using them at all, and I have to use