Date: Tue, 8 Feb 2005 19:36:09 -0600 From: Karl Denninger <karl@denninger.net> To: freebsd-stable@freebsd.org Subject: Lock/reboot, no dump (ugh) Message-ID: <20050208193609.A8080@denninger.net>
next in thread | raw e-mail | index | archive | help
Hi folks; FreeBSD 5.3-STABLE #1: Wed Feb 2 22:57:48 CST 2005 karl@FS.denninger.net:/usr/obj/usr/src/sys/KSD-SMP Sources from January 30th. Scenario: 1. Using GEOM_MIRROR to mirror two SATA drives. 2. Nightly, a third drive is used to back up, as follows: a. Check to see if the drive is visible on the SATA interface. b. If not, "atacontrol attach 2" to scan the bus it is plugged into c. Verify that it is now online. d. Use "gmirror insert ...." to insert it into the mirror. e. Wait for it to sync. f. Stop critical processes (e.g. DBMS, etc) g. "gmirror deactivate ...." to remove the backup from the mirror. h. "gmirror forget" to clean up the RAID i. "atacontrol detach 2" to detach and spin down the disk. The disk is now removeable without drama. Initially, this works fine. After a couple of days, it gets flakey. The disk is found during the attach, but the devices for everything other than the base drive are MISSING (e.g. the slice and partition table entries in /dev) Attempts to access the base device also fail with "Device not configured" and of course the rest of the script aborts since the disk isn't there when it tries to add it to the mirror. If you push it by trying to detach and attach a couple more times, eventually the system will just freeze up. A minute or so later, it spontaneously reboots. During the "freeze" the console is deader than a doornail - the CAPS key flips the light, but VT selection is dead, etc. I/O is completely quiescent during this time as well, including from the network. Sorry I don't have a crash dump from this - at least so far I've been unable to coax it into producing one. I'm going to try removing the "attach/detach" stuff and see if that helps, in an attempt to figure out where its getting pissed off. -- -- Karl Denninger (karl@denninger.net) Internet Consultant & Kids Rights Activist http://www.denninger.net My home on the net - links to everything I do! http://scubaforum.org Your UNCENSORED place to talk about DIVING! http://www.spamcuda.net SPAM FREE mailboxes - FREE FOR A LIMITED TIME! http://genesis3.blogspot.com Musings Of A Sentient Mind
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20050208193609.A8080>