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To: Kirk McKusick <mckusick@McKusick.COM>
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
In-Reply-To: Your message of "Sat, 23 Aug 2003 01:32:38 PDT."
             <200308230832.h7N8Wcol050681@beastie.mckusick.com> 
Date: Sat, 23 Aug 2003 11:01:28 +0200
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cc: "\[iso-8859-2\] Branko F. Gračnar" <bfg@noviforum.si>
cc: freebsd-current@freebsd.org
cc: Robert Watson <rwatson@tislabs.com>
cc: Paul Saab <ps@yahoo-inc.com>
Subject: Re: mksnap_ffs, snapshot issues, again 
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In message <200308230832.h7N8Wcol050681@beastie.mckusick.com>, Kirk McKusick writes:

>But, to get to the problem that you are having with accessing your
>filesystem. The problem is that although the filesystem is only
>locked briefly, the snapshot file is locked for the entire 48 minutes.
>Thus, if you touch the snapshot file (by for example doing a "stat"
>on it), then the process doing the stat will hang for 48 minutes.

Isn't there some way we can loosen this aspect up ?

Either by having stat know about it and return approximate info or
simply by failing ? (I pressume that making the sleep interruptible
would break all sorts of standards)


-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.