Subject: Re: JFS
To: Jason R Thorpe <>
From: Greg 'groggy' Lehey <>
List: tech-kern
Date: 02/27/2003 11:45:10
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On Tuesday, 25 February 2003 at  9:01:37 -0800, Jason R Thorpe wrote:
> On Tue, Feb 25, 2003 at 11:40:15AM +1030, Greg 'groggy' Lehey wrote:
>> Growing a file system is not directly a file system function.  It's
>> more akin to newfs.  FreeBSD currently has both snapshots and growfs;
>> it should be relatively trivial to migrate it to NetBSD.
> NetBSD now has "resize_ffs" which can grow and shrink.

That's obviously better.

> Regarding snapshots, some people consider the way they're
> implemented in FFS to be somewhat of a kludge ... and certainly the
> way that the file system is quiesced needs to be reworked before we
> can consider putting it into NetBSD.  Frank van der Linden has some
> thoughts on this.

I haven't looked at details, but yes, quiescing is an issue.

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