I've hit very unpleasant trouble - my ext4 rootfs gots crazy and I had a
thousands of "multiply claimed blocks" files. This revealed to me one
systemd weakness - it depends so heavily on a files on a rootfs, it can
not, in case they are damaged, do its basic function - allow to
login and control and shutdown processes.
This really seems like a problem to me, because in case, there is
something wrong with the (remote) system, the least thing you want is to
not be able to login because systemd is missing some (non esential) files.
OK you may say - you can not login remotely - but you can not login even
localy and also an attempt to reboot the machine with years working
"ctrl-alt-del" is not working because e.g. @ctrl-alt-del.target is
missing.
This really looked like a bug to me
https://bugzilla.redhat.com/show_bug.cgi?id=981877
but it is a feature.
So to avoid the worst - the need to interrupt the power and risk the
damage to all other mounted file systems, I'd like to open a discussion on
enabling the sysrq in Fedora by default to work around this feature:
https://bugzilla.redhat.com/show_bug.cgi?id=982200
Adam Pribyl
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