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> -----Original Message----- > From: Dominik Vogt [mailto:opengfs-devel@lists.sourceforge.net] > Sent: Thursday, August 14, 2003 4:47 AM > To: opengfs-devel@lists.sourceforge.net > Subject: Re: [ogfs-dev]Map OpenDLM to G-lock: lock name > > The most likely problem I see is how to share one odlm for > multiple ogfs partitions. How can this be achieved? I'm not sure what you mean by "multiple ogfs partitions"?? If you mean multiple filesystems (e.g. one fs on /dev/something1, mounted at /ogfs1, and another fs on /dev/something2, mounted at /ogfs2), they would need to be differentiated by the locktable/lockspace info. A user/admin would need to enter a locktable string, either with "-t" option when running mkfs.ogfs (this writes it into on-disk superblock), or with "locktable=" option when mounting the filesystem (this overrides the superblock data). This is analogous to specifying the cidev for memexp. memexp enforces that the cidev must be *unique for each filesystem* (and, of course, it must be identical for each node accessing the filesystem). Hmmm, maybe the value within the OpenDLM lockname should be a 4-char (8?) hash of the locktable string?? This way, the user/admin could enter a real cidev /dev/cidevxxx string for memexp, and be able to use the same string for opendlm?? Stanley was thinking about using the last 4 characters, but a hash would be more robust, with fewer ways for the user/admin to fall into a trap (e.g. /dev/0cidev vs /dev/1cidev). Is this what you meant, or were you thinking of something else? -- Ben -- Opinions are mine, not Intel's > > Bye > > Dominik ^_^ ^_^ > ------------------------------------------------------- This SF.Net email sponsored by: Free pre-built ASP.NET sites including Data Reports, E-commerce, Portals, and Forums are available now. Download today and enter to win an XBOX or Visual Studio .NET. http://aspnet.click-url.com/go/psa00100003ave/direct;at.aspnet_072303_01/01 _______________________________________________ Opengfs-devel mailing list Opengfs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/opengfs-devel