RE: e2fs unstable on powerdown
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.
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.
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.
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....
regards
Steven
aka thing
-----Original Message-----
From: David Zejda [mailto:dvid@atlas.cz]
Sent: Tuesday, 30 November 2004 9:46 a.m.
To: Debian ISP
Subject: e2fs unstable on powerdown
Hi!
I'm facing severe problems with e2fs on low-volume server with Postfix
and NSD running. Every time the power goes off, the / is mounted ro
(which is meaningful) and is a bit corrupted (10-20 files with 0 size,
bad owners, completely lost etc.). I know, the best solution would be to
buy the UPS, but is a such unstability common? I wouldn't be surprised
in case of Raiser with cache enabled, but ext2 is known as a relative
stable fs. Should I tune something or is the UPS the only way? Thanks
for hints!
With regards
David
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