problem with saving log files in Gentoo embedded

[miroslav]

Hello,

I have a problem with switching off my embedded Gentoo machine. Conditions in which my Gentoo machine works are such that I very often need to turn it off immediately on switch button, without setting turn off from PC previously. It causes a lot of problems with my filesystem. After booting machine again there is a lot of 'failed' situations and everything is messed up!

I don't know how to handle this!

I think that problem is with saving log files. Could I manage that Gentoo doesn't save log files any more?

Any suggestions?

Thank you!
Miroslav

[Irithori]

If it is *just* logfiles, then you could configure syslog.conf to send it to <somehwere>.

But I somehow doubt it (pidfiles, tempfiles, working directories etc)
What might help is to choose ramdisks for directories, that need to be written to *and* can easily be lost on a poweroff.

[miroslav]

Thank you very much!

I edited /etc/rsyslog.conf, and I think that I managed to send log files to ram disk (I replace /var/log with /tmp2 directory that I previously create and mount to ram).
I noticed that there is no new records in /var/log.

How could I manage pidfiles, tempfiles to be sent to ram?

There are still errors like:

EXT2-fs error (device hdb1): ext2_lookup: deleted inode referenced: 855

when I boot up Gentoo machine!

[Irithori]

I meant:
Send the logs to another machine.

Otherwise they will fill your ramdisk quite quickly, especially on a embedded device


For the other files:
Look for the exact locations. Probably /var/tmp /var/lock etc
And mount these to ramdisk(s)

It might make sense to verify each application, cronjob and daemon you intend to run
and search for possible write locations.
On a embedded system, the number of such processes should be pretty low.

In theory, each mountpoint except the ramdisk(s) should be readonly.