From: Qu Wenruo <quwenruo.btrfs@gmx.com>
To: "Gervais, Francois" <FGervais@distech-controls.com>,
"linux-btrfs@vger.kernel.org" <linux-btrfs@vger.kernel.org>,
Filipe Manana <FdManana@suse.com>
Subject: Re: read time tree block corruption detected
Date: Tue, 20 Apr 2021 09:34:14 +0800 [thread overview]
Message-ID: <709d1a70-e52a-0ff3-8425-f86f18ac0641@gmx.com> (raw)
In-Reply-To: <SN6PR01MB4269861CA9BA4D5E61DF1030F3499@SN6PR01MB4269.prod.exchangelabs.com>
On 2021/4/19 下午10:56, Gervais, Francois wrote:
>> My bad, wrong number.
>>
>> The correct number command is:
>> # btrfs ins dump-tree -b 790151168 /dev/loop0p3
>
>
> root@debug:~# btrfs ins dump-tree -b 790151168 /dev/loop0p3
> btrfs-progs v5.7
[...]
> item 4 key (5007 INODE_ITEM 0) itemoff 15760 itemsize 160
> generation 294 transid 219603 size 0 nbytes 18446462598731726987
The nbytes looks very strange.
It's 0x0xfffeffffffef008b, which definitely looks aweful for an empty inode.
> block group 0 mode 100600 links 1 uid 1000 gid 1000 rdev 0
> sequence 476091 flags 0x0(none)
> atime 1610373772.750632843 (2021-01-11 14:02:52)
> ctime 1617477826.205928110 (2021-04-03 19:23:46)
> mtime 1617477826.205928110 (2021-04-03 19:23:46)
> otime 0.0 (1970-01-01 00:00:00)
> item 5 key (5007 INODE_REF 4727) itemoff 15732 itemsize 28
> index 0 namelen 0 name:
> index 0 namelen 0 name:
> index 0 namelen 294 name:
Definitely corrupted. I'm afraid tree-checker is correct.
The log tree is corrupted.
And the check to detect such corrupted inode ref is only introduced in
v5.5 kernel, no wonder v5.4 kernel didn't catch it at runtime.
I don't have any idea why this could happen, as it doesn't look like an
obvious memory flip.
Maybe Filipe could have some clue on this?
Thanks,
Qu
> item 6 key (5041 INODE_ITEM 0) itemoff 15572 itemsize 160
> generation 295 transid 219603 size 4096 nbytes 4096
> block group 0 mode 100600 links 1 uid 1000 gid 1000 rdev 0
> sequence 321954 flags 0x0(none)
> atime 1610373832.763235044 (2021-01-11 14:03:52)
> ctime 1617477815.541863825 (2021-04-03 19:23:35)
> mtime 1617477815.541863825 (2021-04-03 19:23:35)
> otime 0.0 (1970-01-01 00:00:00)
> item 7 key (5041 INODE_REF 4727) itemoff 15544 itemsize 28
> index 12 namelen 18 name: health_metrics.txt
> item 8 key (5041 EXTENT_DATA 0) itemoff 15491 itemsize 53
> generation 219603 type 1 (regular)
> extent data disk byte 12746752 nr 4096
> extent data offset 0 nr 4096 ram 4096
> extent compression 0 (none)
> item 9 key (EXTENT_CSUM EXTENT_CSUM 12746752) itemoff 15487 itemsize 4
> range start 12746752 end 12750848 length 4096
>
next prev parent reply other threads:[~2021-04-20 1:34 UTC|newest]
Thread overview: 75+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-16 19:35 read time tree block corruption detected Gervais, Francois
2021-04-17 1:01 ` Qu Wenruo
2021-04-19 13:20 ` Gervais, Francois
2021-04-19 13:33 ` Qu Wenruo
2021-04-19 14:56 ` Gervais, Francois
2021-04-20 1:34 ` Qu Wenruo [this message]
2021-04-20 14:19 ` Gervais, Francois
2021-04-20 23:47 ` Qu Wenruo
2021-04-21 14:17 ` Gervais, Francois
2021-04-21 23:01 ` Qu Wenruo
2021-04-22 14:26 ` Gervais, Francois
2021-05-26 23:03 ` Gervais, Francois
2021-05-26 23:25 ` Qu Wenruo
-- strict thread matches above, loose matches on Subject: below --
2021-11-22 5:26 x8062
2021-11-22 7:24 ` Nikolay Borisov
2021-11-22 10:07 ` x8062
2021-11-22 10:36 ` Nikolay Borisov
2021-11-23 2:42 ` x8062
2021-11-23 5:56 ` Nikolay Borisov
2021-07-17 1:45 Read " pepperpoint
2021-07-17 7:05 ` Qu Wenruo
[not found] ` <162650555086.7.16811903270475408953.10183708@simplelogin.co>
2021-07-17 7:51 ` pepperpoint
[not found] ` <162650826457.7.1050455337652772013.10184548@mb.ardentcoding.com>
2021-07-17 8:14 ` Qu Wenruo
[not found] ` <162650966150.7.11743767259405124657.10185986@simplelogin.co>
2021-07-17 8:57 ` pepperpoint
2021-07-17 10:12 ` Qu Wenruo
[not found] ` <162651674065.6.7912816287233908759.10188327@simplelogin.co>
2021-07-17 10:34 ` pepperpoint
[not found] ` <162651809235.7.7061042874033963922.10188873@mb.ardentcoding.com>
2021-07-17 10:48 ` Qu Wenruo
[not found] ` <162651892663.6.17938009695497100557.10189169@simplelogin.co>
2021-07-17 12:51 ` pepperpoint
[not found] ` <CQeY09U34m7SrT6nTAlkSQrbLJtmyKF1tDfuGDtKUkwJqujMI_nZU4MpGiU4F_Q1U3Lk1aWD1mFCT5SlsOsOcILWECflIw7EhVQTQpy_1Ts=@email.ardentcoding.com>
2021-07-18 5:26 ` pepperpoint
2021-07-18 7:15 ` Qu Wenruo
[not found] ` <162659327011.8.12718249358254503695.10218325@simplelogin.co>
2021-07-18 8:46 ` pepperpoint
[not found] ` <162659797656.6.14385932343235367381.10220447@mb.ardentcoding.com>
2021-07-18 9:32 ` Qu Wenruo
[not found] ` <162660074747.7.3300740266059717894.10221270@simplelogin.co>
2021-07-18 10:34 ` pepperpoint
[not found] ` <162660447733.8.9782212603273165785.10222524@mb.ardentcoding.com>
2021-07-18 11:13 ` Qu Wenruo
[not found] ` <162660684635.8.12423097770824212671.10223516@simplelogin.co>
2021-07-18 12:16 ` pepperpoint
[not found] <CAJheHN0FUe-ijMco1ZOc6iKF2zbPocOw+iiVNeTT1r-JuXOJww@mail.gmail.com>
2020-05-06 21:54 ` Fwd: " Tyler Richmond
2020-05-06 23:55 ` Chris Murphy
2020-05-07 0:51 ` Tyler Richmond
2020-05-07 1:06 ` Chris Murphy
2020-02-12 21:58 read " Samir Benmendil
2020-02-13 0:26 ` Qu Wenruo
2020-02-13 13:04 ` Samir Benmendil
2020-02-13 14:01 ` Qu Wenruo
2020-02-15 15:34 ` Samir Benmendil
2020-01-16 13:40 Peter Luladjiev
2020-01-16 16:12 ` Nikolay Borisov
[not found] ` <CA+ZCqs5=N5Hdf3NxZAmPCnA8wbcJPrcH8zM-fRbt-w8tL+TjUQ@mail.gmail.com>
2020-01-17 7:34 ` Nikolay Borisov
2020-01-17 7:51 ` Peter Luladjiev
2020-01-17 7:54 ` Peter Luladjiev
2020-01-17 7:59 ` Qu Wenruo
2020-01-17 8:14 ` Nikolay Borisov
2020-01-17 8:22 ` Peter Luladjiev
2020-01-17 9:10 ` Nikolay Borisov
2020-01-17 12:04 ` Peter Luladjiev
2019-12-29 20:43 Patrick Erley
2019-12-29 22:07 ` Chris Murphy
2019-12-29 22:27 ` Patrick Erley
2019-12-29 22:32 ` Chris Murphy
2019-12-29 22:36 ` Patrick Erley
2019-12-29 23:11 ` Chris Murphy
2019-12-29 23:19 ` Patrick Erley
2019-12-29 23:24 ` Chris Murphy
2019-12-29 23:26 ` Patrick Erley
2019-12-30 0:46 ` Qu Wenruo
2019-12-30 5:36 ` Patrick Erley
2019-12-30 5:43 ` Qu Wenruo
2019-12-30 5:47 ` Patrick Erley
2019-12-30 5:50 ` Patrick Erley
2019-12-30 5:58 ` Qu Wenruo
2019-12-30 6:07 ` Patrick Erley
2019-12-30 6:09 ` Qu Wenruo
2019-12-30 8:14 ` Patrick Erley
2019-12-30 8:54 ` Qu Wenruo
2019-12-30 9:01 ` Patrick Erley
2019-12-30 9:09 ` Qu Wenruo
2019-12-30 9:21 ` Patrick Erley
2019-12-30 9:27 ` Qu Wenruo
2019-12-30 10:06 ` Patrick Erley
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