[Bug 78651] Write performance of ext4 degrades linearly as volume fills

https://bugzilla.kernel.org/show_bug.cgi?id=78651

--- Comment #6 from Joseph D. Wagner <joe@josephdwagner.info> ---

I formatted with these options.  The performance difference has been profound.

# mke2fs \
 -E lazy_itable_init=0,lazy_journal_init=0 \
 -J size=1024 -L backup -m 1 -t ext4 -v /dev/mapper/backup

I will update with the details when it completes.

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