Ubuntu
linux package

  1. Bug #1847340
  2. Comment #0

Comment 0 for bug 1847340

Revision history for this message
dann frazier (dannf) wrote : ext4 journal recovery fails w/ data=journal + journal_checksum + mmap

[Impact]
In the event of a loss of power, ext4 filesystems mounted w/ data=journal,journal_checksum are subject to a corruption issue that requires a fsck to recover. This is exacerbated by installations by curtin that set passno=0 in /etc/fstab, preventing fsck from running automatically and thus requiring a manual recovery. And *that* is further exacerbated because initramfs-tools is smart enough to not include fsck.ext4 when passno=0 is detected in /etc/fstab, requiring the user to boot from recovery media.

[Test Case]
Forcibly power cycle a system running 'stress-ng --dir 0'. I've created a package to automate the reproduction:
https://git.launchpad.net/~dannf/+git/dgx2-ext4-csum-repro?h=master

[Fix]
[Regression Risk]