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ext4: show 'shutdown' hint when ext4 is forced to shutdown

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Now, if dmesg is cleared, we have no way of knowing if the file system has
been shutdown. Moreover, ext4 allows directory reads even after the file
system has been shutdown, so when reading a file returns -EIO, we cannot
determine whether this is a hardware issue or if the file system has been
shutdown.

Therefore, when ext4 file system is shutdown, we're adding a 'shutdown'
hint to commands like mount so users can easily check the file system's
status.

Signed-off-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Link: https://patch.msgid.link/20250122114130.229709-8-libaokun@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Baokun Li 2025-01-22 19:41:30 +08:00 committed by Theodore Ts'o
parent 6b76715d5e
commit 5855c35194
1 changed files with 3 additions and 0 deletions
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3
fs/ext4/super.c
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@ -3032,6 +3032,9 @@ static int _ext4_show_options(struct seq_file *seq, struct super_block *sb,
if (ext4_emergency_ro(sb))
SEQ_OPTS_PUTS("emergency_ro");
if (ext4_forced_shutdown(sb))
SEQ_OPTS_PUTS("shutdown");
ext4_show_quota_options(seq, sb);
return 0;
}