Public bug reported:
Description: Ubuntu Xenial Xerus (development branch)
Release: 16.04
f2fs-tools:
Installed: 1.6.0-2
Candidate: 1.6.0-2
Version table:
*** 1.6.0-2 500
500 http://gb.archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
100 /var/lib/dpkg/status
100% repeatable on various machines.
How to trigger:
1: Setup mdadm raid1 on 2 sata SSDs
2: Format as f2fs
3: install Wily or Xenial onto the f2fs (to be mounted as / in final system),
set mountpoint to "defaults,discard"
.
4: After installation boot up.
5: Reboot via gui or "shutdown -r", no problem.
6: Update / mount options
By default, with "defaults,discard" these are
rw,relatime,background_gc=on,discard,user_xattr,acl,inline_data,extent_cache,active_logs=6
add inline_xattr,inline_dentry,flush_merge
Remake initramfs, update grub, etc. Reboot
Once running with the new parameters:
Leave operating for a while, then shutdown via gui or "shutdown -r"
On reboot, the filesystem will be completely trashed. fsck.f2fs is
unlikely to recover it.
This does not happen for non-raid f2fs partitions mounted below root.
Presumably this occurs because the FS is not properly flushed before
reboot, but it faces the same filesystem trashing issues if the system
is reset.
** Affects: lxpanel (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1557745
Title:
root filesystem-trashing bug in f2fs + mdadm raid1
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