Date: Sat, 19 Mar 2005 12:57:41 +0200 From: Danny Braniss <danny@cs.huji.ac.il> To: Scott Long <scottl@samsco.org> Cc: scsi@freebsd.org Subject: Re: iSCSI initiator driver beta version, testers wanted Message-ID: <E1DCbeH-0003QG-Mh@cs1.cs.huji.ac.il> In-Reply-To: Your message of Tue, 15 Mar 2005 06:44:11 -0700 .
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with tags enabled, iSCSI is much faster, but it also causes a deadlock :-( this is what i run: newfs -U /<iscsi device> cd /<iscsi device> restore rf /home/file.dump on the same motherboard, a dual Xeon, with smp disabled all is OK with smp enabled restore gets stuck usualy waiting on biord. the iscsi driver shows that all requests have been done, the sniffing shows the same(ie all request have been done). so this leads me to think that there is some race condition that i'm not aware of in a SMP system, where xpt_done(ccb) is called while another process is calling biowait. another lead is that after restore gets stuck, the system slowly gets 'stalled'. any insight is most welcome!, i'm also stuck. danny
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