On Mon, 30 Jan 2012, Yasha Karant wrote:
We had a massive power failure, beyond what the UPS could handle. Despite
attempts to find a way for the system to shut down gracefully, it simply
powered down without unmounting the disk partitions. Nominally, the backup
local UPS I am using (APC Back-UPS 650) has an interface Port DB-9 RS-232 but
I have not found any Linux application that reliably would communicate with
this model of UPS (that is, emulate the same behavior as the application
available from APC for MS Win that senses the RS-232 information from APC,
waits the appropriate time, and then shutdown -- anyone found one?).
Upon boot, automatic fsck failed, and a request was posted for root password.
However, no more than one character of the password would be accepted,
causing an endless loop to this condition and not allowing me control of the
system (run fsck manually).
Hi Yasha,
I wonder:
- whether you were in fact using a journalling filesystem (because it
should even recover from power failure like that when it is journalled)
- what was mounted on /mnt/sysimage (as normally this is your
root-filesystem during installation, not during runtime)
- why you couldn't disable the filesystem in /etc/fstab, reboot and fix
it after the system would have booted normally
- why a filesystem like /mnt/sysimage is configured to stop the
boot-process when it has issues (man fstab, check sixth field)
Thanks in advance for clearing the fog,
--
-- dag wieers, [email protected], http://dag.wieers.com/
-- dagit linux solutions, [email protected], http://dagit.net/
[Any errors in spelling, tact or fact are transmission errors]
