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Date:   Tue, 04 Dec 2018 21:17:30 +0000
From:   bugzilla-daemon@...zilla.kernel.org
To:     linux-ext4@...r.kernel.org
Subject: [Bug 201685] ext4 file system corruption

https://bugzilla.kernel.org/show_bug.cgi?id=201685

--- Comment #243 from Han Vinke (jfavinke@...il.com) ---
I have a PC with multiple boot -Windows 10, Arch linux with kernel 4.19.x en
Ubuntu Disco Dingo with 4.19.x. My Arch linux is an encrypted LVM. 

I can actually invoke the EXT4-fs errors on Ubuntu!
Which is not encrypted but has cryptsetup-initramfs installed, because I make
regular backups with partclone from the Arch partitions.

All that is needed on Ubuntu is to run sudo update-initramfs -u

cryptsetup: WARNING: The initramfs image may not contain cryptsetup binaries
nor crypto modules. If that's on purpose, you may want to uninstall the
'crypsetup-initramfs' package in order to disable the cryptsetup initramfs
integration and avoid this warning.

You will get a warning or error that is also subscribed in this bugreport:

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=901830

The problem is that when you reboot you will get all the EXT4-fs errors.
I have to do a e2fsck via Arch, it reports some inode errors and when rebooting
Ubuntu the problem is gone, if there never were any problems.

Also when I am on ARCH cloning the Ubuntu partitions I can reproduce these
errors.
When mistakenly partcloning a read-only mounted partition for instance.

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