Booting Linux on a server when filesystem is readonly

If your root server hoster loves to integrate 10 year old harddisks with a history of 89 previous customers you’ll have to cope many times with disk failures. If you launch a shutdown -r now or reboot you’ll likely see Input/output error messages and nothing more.

How to boot? You might use your IPMI interface or some kind of hosters panel. If this is not available for any reason here’s how you might be able to force booting immediately:

# echo 1 > /proc/sys/kernel/sysrq
# echo b > /proc/sysrq-trigger

This works (as root) because you can trigger the Magic_SysRq_key concept also via the proc filesystem.

Enjoy.

Doing actual work during the „creator:unit“ at border:none in Nürnberg

So we’re starting to have fun with microformats and linking back and forth. Let’s see what’s happening 🙂

Hi Aaron!

Image of a hands on session in Nuremberg 2014
Aaron Parecki and Jeremy Keith (standing 😉

Image published by Bernd
on

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