https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=261543
Bug ID: 261543
Summary: [ZFS] file in encrypted dataset disappears after first
reboot
Product: Base System
Version: 13.0-RELEASE
Hardware: amd64
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: b...@freebsd.org
Reporter: tace...@gmail.com
A file in encrypted dataset disappears after first reboot.
How to reproduce:
1. Create an encrypted dataset like so (after creating a file with a
passphrase)
zfs create -o encryption=on -o keyformat=passphrase -o
keylocation=file:///root/pass zroot/enc
2. Create file in encrypted dataset, for example like so
cat > /zroot/enc/testfile
3. Reboot
4. Look for testfile, it has disappeared.
# freebsd-version
13.0-RELEASE-p6
I can reproduce this every time I try.
Further remarks:
- The issue does not manifest if the dataset is not encrypted. I have not
tested other types of encryption so don't know if it manifests or not.
- The issue happens only on the first reboot after creating the dataset. In
other words, if I create a file after the first reboot and reboot again, the
file does not disappear.
- The issue manifests also in a FreeBSD VirtualBox guest running on Archlinux
host.
- The issue does not manifests in a Xubuntu 21.10 VirtualBox guest running on
Archlinux host. This suggests that the issue is in the FreeBSD kernel and not
in the part of the ZFS code that is shared with Linux.
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