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Re: e2fs unstable on powerdown



Steven Jones napsal(a):
convert ext2 to ext3 it is quite simple. I have had RS file systems loose it....easier then ext2...from power failures, I would advise ext3 it is very robust.

OK, gonna getta
tune2fs -j /dev/hda1
/etc/fstab : ext2 -> ext3
/etc/default/rcS : FSCKFIX=no -> FSCKFIX=yes

I had a bit irrational fear about performance consequences of journaling - the machine is a bit outdated - P75 64RAM and goes 50% CPU now, but I have not the heart to give it the air :-)

Your blaming a file system issue with a power failure, sorry its your power that is an issue, I have Solaris boxes, tru64 boxes and NTx boxes all get upset if they have frequent power failures, so ext2 and Linux is not at fault.

It was not really blaming - I only wanted your advices how to proceed..

Get a UPS with a parachute system to shutdown your server. And/or if you know 99% of your power failures are 30 mins and only happen once a week then size the UPS to cope with a 1 hour outage with a recovery of 2 or 3 hours. Online UPSs are the best but cost the most and are usually OTT, unless your line in has severe sine wave and spike issues in which case an online ups is your only viable solution.

I know - UPS would be the best solution, but the budget is extremely limited and powerdowns are not more frequent than 3x a year.

The other trick is to look at a UPS with a big charging circuit but small batteries, ie one designed for expandibility) you can then add car batteries to it very cheaply to give massive capacity for at most the same cost as the dry cells that the UPS normally uses...ie keep the server up all day....

Really interestig... UPS tuning :)

regards

Steven
aka thing

Cheers

David
aka David



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