Date: Fri, 25 Jun 2004 15:28:39 -0700 From: "Scott T. Smith" <scott@gelatinous.com> To: freebsd-hardware@freebsd.org Subject: 3ware 8506 JBOD problem Message-ID: <1088202519.8211.17.camel@tinny.home.foo>
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I'm running FreeBSD 5.2.1-RELEASE on a machine with three 3ware 8506-8 cards, each with 8 disks attached in JBOD mode. I'm having problems making hotswapping work properly, and I'm wondering if anyone else has seen the same thing, and if it's a controller or OS problem. If I issue consecutive reads from two disks on the same controller, and yank a disk, then the process reading from that disk hangs (obviously) while the other keeps going. However, about 20 seconds later, the other process hangs for a bit too. Then if I issue the 'maint remove c2 u0' command, the other disk will hang again. This seems like odd behaviour for a RAID card. Is it just that you cannot remove a disk without telling the controller first? Or does JBOD mode behave less effectively than RAID mode? Scott
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