New: Delete the file from the upper layer directly, the file will become "Stale"
https://bugzilla.kernel.org/show_bug.cgi?id=218822
Bug ID: 218822
Summary: Delete the file from the upper layer directly, the
file will become "Stale"
Product: File System
Version: 2.5
Hardware: All
OS: Linux
Status: NEW
Severity: normal
Priority: P3
Component: ext4
Assignee: [email protected]
Reporter: [email protected]
Regression: No
The FS mount as following:/dev/sda7 on / type ext4 (rw,relatime)/dev/sda5 on /persistent type ext4 (rw,relatime)
overlay on /etc type overlay (rw,relatime,lowerdir=/sysroot/etc,upperdir=/sysroot/persistent/platform/B/etc/upper,workdir=/sysroot/persistent/platform/B/etc/work)
1. I touched a file named "A" on /etc
2. I remove the file "A" from "/persistent/platform/B/etc/upper"
3. The file "A" in /etc will become "Stale"
root@exs1610ada83b:~ [B]# touch /etc/A root@exs1610ada83b:~ [B]# rm /persistent/platform/B/etc/upper/A root@exs1610ada83b:~ [B]# rm /etc/A
rm: can't remove '/etc/A': Stale file handle
Linux version:
root@exs1610ada83b:~ [B]# uname -a
Linux exs1610ada83b 5.10.184-intel-pk-standard #1 SMP PREEMPT Sun Jun 25 06:48:28 UTC 2023 x86_64 GNU/Linux
Thought, the /etc/A will be removed also.
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[Bug 218822] Delete the file from the upper layer directly, the file will become "Stale"
https://bugzilla.kernel.org/show_bug.cgi?id=218822
--- Comment #1 from [email protected] ---
1. The issue has also been reproduced on:
29~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Thu Apr 4 14:39:20 UTC 2 x86_64 x86_64 x86_64 GNU/Linux
~:mount -t overlay -o lowerdir=etc,upperdir=upper,workdir=work overlay etc
~:~/overlaytest$ touch etc/a rm upper/a rm etc/a rm: cannot remove 'etc/a': Stale file handle
2. But not reproduced on WSL(Ubuntu 20.04.6) Squall.Zhou[~/over1]:mkdir etc
mkdir upper
mkdir work
sudo mount -t overlay -o lowerdir=etc,upperdir=upper,workdir=work overlay etc sudo touch etc/a
sudo rm upper/a
sudo rm etc/a
rm: cannot remove 'etc/a': No such file or directory Squall.Zhou[~/over]:uname -a
Linux PC3203 4.4.0-22621-Microsoft #2506-Microsoft Fri Jan 01 08:00:00 PST 2016 x86_64 x86_64 x86_64 GNU/Linux
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[Bug 218822] Delete the file from the upper layer directly, the file will become "Stale"
In reply to [email protected]https://bugzilla.kernel.org/show_bug.cgi?id=218822
--- Comment #2 from Artem S. Tashkinov ([email protected]) --- Is this reproducible on mainline 6.8.9?
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[Bug 218822] Delete the file from the upper layer directly, the file will become "Stale"
In reply to [email protected]https://bugzilla.kernel.org/show_bug.cgi?id=218822
--- Comment #3 from [email protected] ---
(In reply to Artem S. Tashkinov from comment #2)
Quoted 1 line
Is this reproducible on mainline 6.8.9?
I don't have such a new system.
I have tried it on "Linux allenwei-VirtualBox 6.5.0-28-generic #29~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Thu Apr 4 14:39:20 UTC 2 x86_64 x86_64 x86_64 GNU/Linux"
On this version, I can reproduce this issue.
This is the newest version I can get for test.
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[Bug 218822] Delete the file from the upper layer directly, the file will become "Stale"
In reply to [email protected]https://bugzilla.kernel.org/show_bug.cgi?id=218822
--- Comment #4 from [email protected] ---
Created attachment 306279
--> https://bugzilla.kernel.org/attachment.cgi?id=306279&action=edit
Test result for 6.8.0
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[Bug 218822] Delete the file from the upper layer directly, the file will become "Stale"
In reply to [email protected]https://bugzilla.kernel.org/show_bug.cgi?id=218822
--- Comment #5 from [email protected] --- Comment on attachment 306279
--> https://bugzilla.kernel.org/attachment.cgi?id=306279
Test result for 6.8.0
I have also reproduced it on 6.8.0
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[Bug 218822] Delete the file from the upper layer directly, the file will become "Stale"
In reply to [email protected]https://bugzilla.kernel.org/show_bug.cgi?id=218822
Nicolas Bretz ([email protected]) changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |[email protected]
--- Comment #6 from Nicolas Bretz ([email protected]) --- Looking at this I was thinking it might not be strictly related to ext4. Same issue happens on btrfs.
I was able to replicate it on a few machines running 6.11.0 by simply following the commands in the .png attachment.
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