[systemd-devel] [PATCH 2/2] fsck: Add support for EFI variable based fsck indication

[Kay Sievers]

On Sun, Mar 15, 2015 at 8:08 PM, Zbigniew Jędrzejewski-Szmek
<zbyszek at in.waw.pl> wrote:
> On Sun, Mar 15, 2015 at 07:58:35PM +0100, Kay Sievers wrote:
>> If the filesytem is too dumb to have that info in the superblock flags
>> to store, to request a forced fsck, it is the problem of the file
>> system to fix and nothing we need to solve in systemd.
> Are there filesystems which have such a flag?

Some have the "not cleanly unmounted" flag, or mount counters for regular
checks. I don't know any details. Maybe this flag or counter could be
mis-used to force such a check.

In any case, the superblock and corresponding fsck tool would be the
right place to put such a force check flag/logic, the info would be
stored locally with the actual filesystem, but would not require a r/w
mount to place that information.

Working around such missing basic filesystem features in systemd code
does not sound like the right approach.

Kay