Date: Sat, 9 Apr 2005 17:19:43 -0400 From: David Gilbert <dgilbert@dclg.ca> To: freebsd-hackers@freebsd.org Subject: ggate failures. Message-ID: <16984.18159.732608.234243@canoe.dclg.ca>
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I have two systems, each with 4 300 gig SATA disks. Let's call them m0 and m1. M1 exports it's disks with ggated ... on two private GigE networks. M0, on those same two GigE networks, imports them with ggatec. M0, then does the following: Mirror Disks ====== ===== s0 ggate0 da0s1g s1 ggate1 da1s1g s2 ggate2 da2s1g s3 ggate3 da3s1g And then: concat Disks ====== ===== v0 s0 s1 s2 s3 (so v0 is a concatination of 4 mirrors that consist of a local and remote disk, each) Now... This all works, and we create a filesystem on v0. The problem arises that whenever a lot of activity occurs on v0 (untaring a copy of /usr is sufficient), the ggate links break down. An example message from the dmesg: GEOM_MIRROR: Request failed (error=5). ggate2[WRITE(offset=259891840000, length=8192)] Now... I don't know a lot about ggate, but this appears trivial to trigger. Has anyone tried similar configurations and is there any wisdom about ggate configurations? Dave. -- ============================================================================ |David Gilbert, Independent Contractor. | Two things can only be | |Mail: dave@daveg.ca | equal if and only if they | |http://daveg.ca | are precisely opposite. | =========================================================GLO================
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