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Message-ID: <bug-207635-13602@https.bugzilla.kernel.org/>
Date: Sat, 09 May 2020 09:07:16 +0000
From: bugzilla-daemon@...zilla.kernel.org
To: linux-ext4@...r.kernel.org
Subject: [Bug 207635] New: EXT4-fs error (device sda3): ext4_lookup:1701:
inode #...: comm find: casefold flag without casefold feature; EXT4-fs
(sda3): Remounting filesystem read-only
https://bugzilla.kernel.org/show_bug.cgi?id=207635
Bug ID: 207635
Summary: EXT4-fs error (device sda3): ext4_lookup:1701: inode
#...: comm find: casefold flag without casefold
feature; EXT4-fs (sda3): Remounting filesystem
read-only
Product: File System
Version: 2.5
Kernel Version: 5.5.11
Hardware: x86-64
OS: Linux
Tree: Mainline
Status: NEW
Severity: blocking
Priority: P1
Component: ext4
Assignee: fs_ext4@...nel-bugs.osdl.org
Reporter: joerg.sigle@...gle.com
Regression: No
Hello.
Since upgrade to Linux 5.5.11 on a Devuan System I've had a previously
completely stable system repeatedly remount the root file system as read only,
effectively requiring a reboot and fsck.
This problem appeared at about the same time when I read about the casefold
feature being added; I did not willingly activate that feature nor do I want to
use it. I suspect however, that the new feature might have come with a new bug.
This is an ext2 filesystem using the ext4 kernel subsystem.
The error occurs maybe once every few days; i.e. I'm practically unable to
reproduce it willingly, but it's often enough to recognize it as a truly
existing problem. It's definitely a show-stopper, but I don't know yet whether
it causes data loss as well.
Going back to the previously used Linux 5.3.15 quite probably removed the
problem. And going forward to 5.5.11 made the problem re-appear.
These are self compiled kernels, quite possibly I don't use the best .config
that I could. I can provide the .config files for both the 5.3.15 and the
5.5.11 kernels I have used.
$ cat /proc/version
Linux version 5.5.11-i7 (root@...nk3) (gcc version 8.3.0 (Debian 8.3.0-6)) #1
SMP PREEMPT Wed Mar 25 04:44:37 CET 2020
# dmesg | tail
EXT4-fs error (device sda3): ext4_lookup:1701: inode #4253945: comm find:
casefold flag without casefold feature
EXT4-fs (sda3): Remounting filesystem read-only
This was after startup, a little bit of web browsing, and getting and reading
my e-mail.
And upon restart:
/dev/sda3 contains a file system with errors, check forced.
/dev/sda3: Deleted inode 14729236 has zero dtime. FIXED.
/dev/sda3: Deleted inode 14729243 has zero dtime. FIXED.
/dev/sda3: Deleted inode 14738534 has zero dtime. FIXED.
/dev/sda3: Deleted inode 14738583 has zero dtime. FIXED.
/dev/sda3: Deleted inode 14738843 has zero dtime. FIXED.
Thanks a lot for looking into this; and I may provide additional info if you
tell me what you need.
Kind regards - j.
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