Gentoo Archives: gentoo-user

From: n952162 <n952162@×××.de>
To: gentoo-user@l.g.o
Subject: [gentoo-user] help with boot msgs and ext[2-4] question
Date: Tue, 17 Mar 2020 12:51:13
Message-Id: 0eae12ea-a04f-cbb7-6533-e463eb6a5232@web.de
1 Hello,
2
3 I see this msg in /var/log/dmesg:
4
5 [    4.444826] EXT2-fs (sdb3): error: couldn't mount because of
6 unsupported optional features (2c0)
7 [    4.468074] EXT4-fs (sdb3): mounted filesystem with ordered data
8 mode. Opts: (null)
9
10 but my system boots.  Is the (2c0) the clue to what features are meant?
11
12 Next question:
13
14 From this article:
15
16 /https://opensource.com/article/18/4/ext4-filesystem/
17
18 I get a good description of *journal*, *ordered* and *writeback*
19 journaling levels and I wonder if my root filesystem should have
20 *ordered* mode.   I recently had a total crash of my ext3/4 root and
21 home filesystems, where the directories were lost and I had to paste
22 everything back together again by guess and by golly.  In decades of
23 linux usage, that's never happened to me on that scale.  I'd hoped for
24 more from journaling filesystems.
25
26 Did it happen only because gentoo gave me *ordered* data mode by
27 default  and I should have had *journal*?