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From: Petr Vorel <pvorel@suse.cz>
To: ltp@lists.linux.it
Subject: [LTP] [PATCH] mkfs: force block size to 1024 for ext3 and ext4
Date: Tue, 11 May 2021 08:19:01 +0200	[thread overview]
Message-ID: <YJoh1f4EWtQWlroC@pevik> (raw)
In-Reply-To: <20210510134739.37512-1-cascardo@canonical.com>

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

  reply	other threads:[~2021-05-11  6:19 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-10 13:47 [LTP] [PATCH] mkfs: force block size to 1024 for ext3 and ext4 Thadeu Lima de Souza Cascardo
2021-05-11  6:19 ` Petr Vorel [this message]
2021-05-11 10:36   ` Thadeu Lima de Souza Cascardo
2021-05-11 14:19     ` Petr Vorel
2021-05-11 15:28       ` Thadeu Lima de Souza Cascardo
2021-05-12 13:17     ` Cyril Hrubis
2021-05-12 13:55       ` Petr Vorel
2021-05-12 13:59         ` Jan Stancek
2021-05-12 14:18           ` Cyril Hrubis

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