* [bug] df returns 100% used for empty mixed block group filesystem @ 2016-03-10 8:24 Chris Murphy 2016-03-10 8:33 ` Roman Mamedov 0 siblings, 1 reply; 5+ messages in thread From: Chris Murphy @ 2016-03-10 8:24 UTC (permalink / raw) To: Btrfs BTRFS kernel 4.5.0 rc7 btrfs-progs-4.4.1-1 Summary: A new empty mixed block group "-M" filesystem shows up as 100% full with regular df (gnu coreutils 8.24). Pretty sure this is not a regression, but no regression testing done. https://bugzilla.kernel.org/show_bug.cgi?id=114281 -- Chris Murphy ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [bug] df returns 100% used for empty mixed block group filesystem 2016-03-10 8:24 [bug] df returns 100% used for empty mixed block group filesystem Chris Murphy @ 2016-03-10 8:33 ` Roman Mamedov 2016-03-10 17:40 ` David Sterba 0 siblings, 1 reply; 5+ messages in thread From: Roman Mamedov @ 2016-03-10 8:33 UTC (permalink / raw) To: Chris Murphy; +Cc: Btrfs BTRFS [-- Attachment #1: Type: text/plain, Size: 679 bytes --] On Thu, 10 Mar 2016 01:24:44 -0700 Chris Murphy <lists@colorremedies.com> wrote: > kernel 4.5.0 rc7 > btrfs-progs-4.4.1-1 > > Summary: A new empty mixed block group "-M" filesystem shows up as > 100% full with regular df (gnu coreutils 8.24). Pretty sure this is > not a regression, but no regression testing done. > > > https://bugzilla.kernel.org/show_bug.cgi?id=114281 Just guessing here, but this might be related? [PATCH] btrfs: statfs: report zero available if metadata are exhausted http://www.spinics.net/lists/linux-btrfs/msg48013.html Maybe some maths there are wrong in case of a mixed blockgroup filesystem. -- With respect, Roman [-- Attachment #2: OpenPGP digital signature --] [-- Type: application/pgp-signature, Size: 181 bytes --] ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [bug] df returns 100% used for empty mixed block group filesystem 2016-03-10 8:33 ` Roman Mamedov @ 2016-03-10 17:40 ` David Sterba 2016-04-27 22:55 ` David Sterba 0 siblings, 1 reply; 5+ messages in thread From: David Sterba @ 2016-03-10 17:40 UTC (permalink / raw) To: Roman Mamedov; +Cc: Chris Murphy, Btrfs BTRFS On Thu, Mar 10, 2016 at 01:33:34PM +0500, Roman Mamedov wrote: > On Thu, 10 Mar 2016 01:24:44 -0700 > Chris Murphy <lists@colorremedies.com> wrote: > > > kernel 4.5.0 rc7 > > btrfs-progs-4.4.1-1 > > > > Summary: A new empty mixed block group "-M" filesystem shows up as > > 100% full with regular df (gnu coreutils 8.24). Pretty sure this is > > not a regression, but no regression testing done. > > > > > > https://bugzilla.kernel.org/show_bug.cgi?id=114281 > > Just guessing here, but this might be related? > > [PATCH] btrfs: statfs: report zero available if metadata are exhausted > http://www.spinics.net/lists/linux-btrfs/msg48013.html > > Maybe some maths there are wrong in case of a mixed blockgroup filesystem. Yes it's caused by the referenced patch. The statfs has been broken for mixed blockgroups but the 100% used on empty filesystem looks weird, so it's time to fix the mixed-bg case. ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [bug] df returns 100% used for empty mixed block group filesystem 2016-03-10 17:40 ` David Sterba @ 2016-04-27 22:55 ` David Sterba 2016-04-28 9:58 ` Luis de Bethencourt 0 siblings, 1 reply; 5+ messages in thread From: David Sterba @ 2016-04-27 22:55 UTC (permalink / raw) To: dsterba, Roman Mamedov, Chris Murphy, Btrfs BTRFS, luisbg On Thu, Mar 10, 2016 at 06:40:54PM +0100, David Sterba wrote: > On Thu, Mar 10, 2016 at 01:33:34PM +0500, Roman Mamedov wrote: > > On Thu, 10 Mar 2016 01:24:44 -0700 > > Chris Murphy <lists@colorremedies.com> wrote: > > > > > kernel 4.5.0 rc7 > > > btrfs-progs-4.4.1-1 > > > > > > Summary: A new empty mixed block group "-M" filesystem shows up as > > > 100% full with regular df (gnu coreutils 8.24). Pretty sure this is > > > not a regression, but no regression testing done. > > > > > > > > > https://bugzilla.kernel.org/show_bug.cgi?id=114281 > > > > Just guessing here, but this might be related? > > > > [PATCH] btrfs: statfs: report zero available if metadata are exhausted > > http://www.spinics.net/lists/linux-btrfs/msg48013.html > > > > Maybe some maths there are wrong in case of a mixed blockgroup filesystem. > > Yes it's caused by the referenced patch. The statfs has been broken for > mixed blockgroups but the 100% used on empty filesystem looks weird, so > it's time to fix the mixed-bg case. JFYI, fixed by Luis de Bethencourt and patches queued for 4.7 ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [bug] df returns 100% used for empty mixed block group filesystem 2016-04-27 22:55 ` David Sterba @ 2016-04-28 9:58 ` Luis de Bethencourt 0 siblings, 0 replies; 5+ messages in thread From: Luis de Bethencourt @ 2016-04-28 9:58 UTC (permalink / raw) To: dsterba, Roman Mamedov, Chris Murphy, Btrfs BTRFS On 27/04/16 23:55, David Sterba wrote: > On Thu, Mar 10, 2016 at 06:40:54PM +0100, David Sterba wrote: >> On Thu, Mar 10, 2016 at 01:33:34PM +0500, Roman Mamedov wrote: >>> On Thu, 10 Mar 2016 01:24:44 -0700 >>> Chris Murphy <lists@colorremedies.com> wrote: >>> >>>> kernel 4.5.0 rc7 >>>> btrfs-progs-4.4.1-1 >>>> >>>> Summary: A new empty mixed block group "-M" filesystem shows up as >>>> 100% full with regular df (gnu coreutils 8.24). Pretty sure this is >>>> not a regression, but no regression testing done. >>>> >>>> >>>> https://bugzilla.kernel.org/show_bug.cgi?id=114281 >>> >>> Just guessing here, but this might be related? >>> >>> [PATCH] btrfs: statfs: report zero available if metadata are exhausted >>> http://www.spinics.net/lists/linux-btrfs/msg48013.html >>> >>> Maybe some maths there are wrong in case of a mixed blockgroup filesystem. >> >> Yes it's caused by the referenced patch. The statfs has been broken for >> mixed blockgroups but the 100% used on empty filesystem looks weird, so >> it's time to fix the mixed-bg case. > > JFYI, fixed by Luis de Bethencourt and patches queued for 4.7 > Good to know the issue was important to some people :) It was fun to fix. David, I have been travelling the last week. I will continue with my second bug this weekend. [0] Sorry for the delay on this. Thanks, Luis [0] btrfs fi usage crash when multiple device volume contains seed device https://bugzilla.kernel.org/show_bug.cgi?id=115851 ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2016-04-28 9:58 UTC | newest] Thread overview: 5+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2016-03-10 8:24 [bug] df returns 100% used for empty mixed block group filesystem Chris Murphy 2016-03-10 8:33 ` Roman Mamedov 2016-03-10 17:40 ` David Sterba 2016-04-27 22:55 ` David Sterba 2016-04-28 9:58 ` Luis de Bethencourt
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