Date: Wed, 05 Aug 1998 21:50:25 -0700 From: John Polstra <jdp@polstra.com> To: dpetrou@cs.cmu.edu Cc: hackers@FreeBSD.ORG Subject: Re: verifying sources with cvsup... Message-ID: <199808060450.VAA22132@austin.polstra.com> In-Reply-To: <199808060058.RAA26739@hub.freebsd.org> References: <199808060058.RAA26739@hub.freebsd.org>
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In article <199808060058.RAA26739@hub.freebsd.org>, David Petrou <dpetrou@cs.cmu.edu> wrote: > Hi. I keep up-to-date with stable using cvsup. Recently I suffered > some fs corruption and a bunch of files in /usr/src and /usr/ports got > screwed up. When I next run cvsup, will it automatically find the bad > files and get new copies of them? It depends on what kind of corruption you suffered. Often, filesystem problems or hardware problems cause portions of files to be scribbled on _without_ changing the modification times or sizes of the files. CVSup will not notice this corruption until the next time somebody commits a change to the file, which could be a long time. But read on ... > This is what the manpage says: Yay! A person who reads the man page! :-) > ------------------------------------------------------------------------------ > For efficiency, cvsup maintains a bookkeeping file for each collection, > called the list file. The list file contains information about which > files and revisions the client currently possesses. It also contains in- > formation used for verifying that the list file is consistent with the > actual files in the client's tree. > > The list file is not strictly necessary. If it is deleted, or becomes > inconsistent with the actual client files, cvsup falls back upon a less > efficient method of identifying the client's files and performing its up- > dates. Depending on CVSup 's mode of operation, the fallback method em- > ploys time stamps, checksums, or analysis of RCS files. > ------------------------------------------------------------------------------ > > Unfortunately, I don't know what "mode of operation" my cvsup is > using. The main question is, are you using "checkout mode" (i.e., is there a "tag=" clause in your cvsupfile)? I assume you are, since you mention /usr/src and /usr/ports, but not /home/ncvs. > I'm hoping that I can just delete the list files and cvsup will do > something like compare md5 checksums of all my files against the > archive. If you are using checkout mode, then that should work fine. It will be slower than usual. Also, this really places a heavy load on the server, so you should try not to do it too often. Thanks for the excellent FAQ candidate. :-) John -- John Polstra jdp@polstra.com John D. Polstra & Co., Inc. Seattle, Washington USA "Self-knowledge is always bad news." -- John Barth To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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