[LTP] [PATCH] mkfs: force block size to 1024 for ext3 and ext4

Petr Vorel pvorel@suse.cz
Tue May 11 08:19:01 CEST 2021


Hi,

> ext3 and ext4 filesystems will reserve at least 1024 blocks for the
> journal.  With a blocksize of 4096, this will be 25% of the filesystem size
> without accounting for any other overhead.
Is that any actual problem?

> /etc/mke2fs.conf will use 1024 block size for small filesystems, which are
> between 3M and 512M. However, on recent versions of Ubuntu, this
> configuration has changed and thet default blocksize is 4096 even for small
> filesystems.

> Force the blocksize to 1024 on ext3 and ext4 filesystems, which will lead
> to the expected results, as journals will take only 1M.

IMHO it'd be better to keep the default, because that covers what end users
actually use.

Kind regards,
Petr


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