On Mon, Mar 12, 2018 at 09:14:34AM -0700, Darrick J. Wong wrote: > Hi all, > > This patch series develops the old e2croncheck contrib script into a > more robust online filesystem checker for ext4. <sigh> I forgot to pick up the: "Reviewed-by: Andreas Dilger <adilger@xxxxxxxxx>" that Andreas sent in for patches 3-4. Sorry about that. --D > > The first patch enables tune2fs to set the error state bit so that we > can force a fsck at next mount time. > > Patch 2 creates an e2scrub command that, given an ext4 filesystem on a > LVM volume, creates a snapshot if there's more than 256M free in the LVM > group, runs e2fsck on the snapshot, and deletes the snapshot. If the > fsck ran cleanly, the fs last-check timestamp is updated and fstrim is > run. If corruption is found we mark the fs as needing a fsck and advise > a reboot. A udev rule file is used to prevent the creation of /dev/disk > symlinks to the snapshot. > > Patch 3 introduces the e2scrub_all command that finds all ext4 > filesystems living in LVM volumes and iteratively calls e2scrub on each > of them. > > The fourth patch creates a weekly cron job for automatic invocation as > well as systemd service files so that we can (try to) sandbox the scrub > process and run it with idle priority to reduce latency spikes in the > main filesystem. It also contains a scrub snapshot reaping service that > will tear down old e2scrub snapshots during boot. > > Questions? Comments? This series targets e2fsprogs 1.45. > > --D
