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From: Giuseppe Della Bianca <giusdbg@gmail.com>
To: Qu Wenruo <quwenruo.btrfs@gmx.com>
Cc: Jeff Mahoney <jeffm@suse.com>, linux-btrfs@vger.kernel.org
Subject: Re: [COMMAND HANGS] The command 'btrfs subvolume sync -s 2 xyz' can hangs.
Date: Sun, 06 Jan 2019 18:57:08 +0100	[thread overview]
Message-ID: <2025891.FNXETDMuRi@exnet.gdb.it> (raw)
In-Reply-To: <dc635a98-32cc-4f84-2319-82ef651d3f49@gmx.com>

In data domenica 6 gennaio 2019 15:12:38 CET, Qu Wenruo ha scritto:
]zac[
> Do you have a full history of the kernel versions?

I believe from version 4.13.9 to 4.17.7 .
Today I updated everything to fedora 29, kernel 4.19.10 .

> I'm not sure when the corruption happened.
> It's completely possible that some old kernel caused the corruption but
> not exposed until now.

I am quite convinced that it happens during the snapshot delete and the 
subsequent cleanup.
And maybe even the umount is part of the problem.

> Also, would you please run "btrfs check --readonly" on the fs?
> It should show all corruption.
> 
> And if "btrfs check" shows no corruption, then it's completely a bug in
> that given kernel (and even current kernel).

btrfs check reported various corruptions and fixed them.
A this time it seems that the filesystem works fine (it's the first time it 
does not have to be redone from scratch).

> Thanks,
> Qu

No, thanks to you for your work.

Gdb



  reply	other threads:[~2019-01-06 17:57 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-08-09 15:15 [COMMAND HANGS] The command 'btrfs subvolume sync -s 2 xyz' can hangs Giuseppe Della Bianca
2018-08-09 18:48 ` Jeff Mahoney
2018-08-10 16:57   ` Giuseppe Della Bianca
2019-01-01 16:37   ` Giuseppe Della Bianca
2019-01-04 20:34     ` Jeff Mahoney
2019-01-05 12:30       ` Giuseppe Della Bianca
2019-01-06 14:12         ` Qu Wenruo
2019-01-06 17:57           ` Giuseppe Della Bianca [this message]
2019-01-06 23:55             ` Qu Wenruo
     [not found]               ` <CAO6awePqby834dBSgLx5r6onmD9HhGWAfN4bno0zK6pU0QjrEQ@mail.gmail.com>
2019-01-07 12:55                 ` Fwd: " gius db
2019-01-07 13:31                   ` Qu Wenruo
     [not found]                     ` <CAO6aweMu9HUn34406Kkh-UvoDyoJH2ZdGUQx3vdx1Rj955E4KQ@mail.gmail.com>
2019-01-07 17:53                       ` Fwd: " gius db
2019-01-07 22:40         ` Jeff Mahoney
2019-01-08 21:02           ` Giuseppe Della Bianca
2019-01-08 21:18             ` Jeff Mahoney
2019-01-08 21:55               ` Giuseppe Della Bianca
2019-01-07 23:11     ` Filipe Manana
2019-01-08 12:14       ` gius db
2019-01-08 12:29         ` Filipe Manana
2019-01-08 13:01           ` gius db

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