Re: Improvements to fsck performance in -current ...?

From: Jens Rehsack <rehsack_at_liwing.de>
Date: Wed, 01 Oct 2003 06:39:47 +0000
Kevin Oberman wrote:

[...]

> Current has two major changes re speeding up fsck.
> 
> The most significant is the background operation of fsck on file
> system with soft updates enabled. Because of the way softupdates
> works, you are assured of metadata consistency on reboot, so the file
> systems can be mounted and used immediately with fsck started up in
> the background about a minute after the system comes up.

Be careful what you promise :-)
Most new disks have an own disk cache and some of them have a
write cache enabled. In case of a hardware failure (or power
failure) this data may get lost and the disk's metadata isn't
consistent. It's only when no write cache below the system
is active.

Jens
Received on Tue Sep 30 2003 - 21:39:53 UTC

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