>>>>> "TT" == Theodore Ts'o <ty...@mit.edu> writes:
TT> So does fsck:
TT> % e2fsck /tmp/foo.img
You mean
% fsck /tmp/foo.img
OK. Indeed. These days it indeed works on any file!
OK, please update the following man pages:
DESCRIPTION
fsck is used to check and optionally repair one or more Linux filesys-
tems. filesys can be a device name (e.g. /dev/hdc1, /dev/sdb2), a
mount point (e.g. /, /usr, /home), or an ext2 label or UUID specifier
(e.g. UUID=8868abf6-88c5-4a83-98b8-bfc24057f7bd or LABEL=root).
Above we see the fsck man page needs to say that it can even be used on
plain files that are images of filesystems.
DESCRIPTION
e2fsck is used to check the ext2/ext3/ext4 family of file systems. For
ext3 and ext4 filesystems that use a journal, if the system has been
shut down uncleanly without any errors, normally, after replaying the
committed transactions in the journal, the file system should be
marked as clean. Hence, for filesystems that use journalling, e2fsck
will normally replay the journal and exit, unless its superblock indi-
cates that further checking is required.
device is the device file where the filesystem is stored (e.g.
/dev/hdc1).
Say one can even use e2fsck on plain files that are images of filesystems.
Note that in general it is not safe to run e2fsck on mounted filesys-
tems. The only exception is if the -n option is specified, and -c, -l,
or -L options are not specified. However, even if it is safe to do
so, the results printed by e2fsck are not valid if the filesystem is
mounted. If e2fsck asks whether or not you should check a filesystem
which is mounted, the only correct answer is ``no''. Only experts who
really know what they are doing should consider answering this question
in any other way.
Clarify on the man page also that it is OK to do
e2fsck /tmp/foo.img
even though /tmp itself is mounted.
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