How to run the system in a ramdisk after booting from hda ?
Hi !
How can I transfer the current running system which booted from hda
to a ramdisk and unmount all local filesystems ?
I want to setup a server, which gets its power supply from an UPS,
but this ups can´t tell the machine whether commercial power is
lost/restored,
though a shutdown is not possible.
I wrote a shellscript which checks via mii-tool if the network link is up /
alive,
when the link is lost, machine should stop all "public" accessible services
(pop,
ftp, httpd, " unmount local file systems (exept of ramdisk of course), and
wait
with a minimal root system in the ramdisk until the network link is up again
(power is restored), or beeing cut off because of the ups is out of
capacity. (which doesn´t matter,
because of all filesystems on harddisks are cleanly unmounted)
I have to mention that the switch/hub is not connected to the ups, of
course.
mhm, I do have enough ram for copying the hole machines´ harddisk into a
ramdisk,
but I think thats the wrong way... in needs to much time to do such a copy
in case of
power could be lost .....
any idea would be fine ...
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