6 Jul
2006
6 Jul
'06
11:20 a.m.
On Thu, Jul 06, 2006 at 01:43:40PM +0200, Pieter Palmers wrote:
Modern harddisks use a lot of write caching on the
controller to achieve
decent performance. So when power goes down when there is data in the
write cache, it is lost. The file system however 'thinks' that data has
been written correctly. This hence results in file system corruption.
FS corruption is no fun (I once spent two days recovering data
after bad RAM corrupted an ext2 fs... I ended up with every file I had
in lost+found). But the particular failure I mentioned was drive
hardware, no doubt about it. Lots of low-level IDE errors in
/var/log/messages. Couldn't fsck it, couldn't get any raw
data out of it with "dd if=/dev/hdb", nothing.
I didn't have any warning, either... no funny noises, no
problems or errors the last time I mounted it. *shrug*
+1 on the UPS idea, I've had one for years.
-PW
--
Paul Winkler
http://www.slinkp.com