[Bug 218626] fstest ext4/014 fails when using filesystem quotas

bugzilla-daemon
2024-03-26T15:38:09Z

https://bugzilla.kernel.org/show_bug.cgi?id=218626

--- Comment #1 from Luis Henriques (luis.henriques@linux.dev) ---
Created attachment 306044
--> https://bugzilla.kernel.org/attachment.cgi?id=306044&action=edit
Fix lost+found directory

OK, I've a patch that seems to fix the issue.

When mke2fs creates the 'lost+found' directory, it ensures that there are a few
empty blocks in it. However, this test (ext4/014) corrupts the filesystem and
this directory needs to be created again.

The e2fsck program, however, when recreating the lost+found directory, isn't
making sure that there are these empty blocks. These extra blocks will be then
taken into account in the quota calculation, as they were in the initial
(non-corrupted) filesystem. The patch I'm attaching basically copies the loop
that adds the blocks to the empty directory. There are a few I haven't yet
understood -- for example, the '16*1024' magic number is still a mistery.

Any thoughts?

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