[clug-talk] Server Fails to boot after a Power Failure

[Gustin Johnson]

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John Jardine wrote:
> Others will probably offer better advice but ...
> Boot from a CD/Flash and run fsck on the corrupt drive.  If the
> corruption is not catastrophic then you may well be able to recover from
> there.

- From the rescue OS, I would also perform some SMART tests using the
smartmon tools.  Both Ubuntu and systemrescuecd have this, IIRC so does
Knoppix.

> If recovery is not easy, then I'd be inclined to put a new disk in (hey
> - the old one is already 4yrs old), reinstall the O/S and restore from
> backups.

Not a bad idea at all.

> If you really want to get the old drive working again, at least image
> the contents to another disk (use 'dd' or similar) in case you end up
> making it worse during recovery (it's happened to me).

ddrescue is even better than dd, especially in cases like these where
hardware may be failing.
> 
> To insure against similar problems in the future:
> Install a UPS (APC 1k is under $200)
> Use a journalling fs (ext3)
> 
The short short answer to which file system to use, is that ext3 is
safer than reiser.

> Hope that helps at least a bit.
> 
Ditto.
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