Date: Sun, 6 Oct 2002 22:37:42 -0500 From: Dan Nelson <dnelson@allantgroup.com> To: Robert Watson <rwatson@FreeBSD.ORG> Cc: Seth Hieronymus <sethh@principia.edu>, freebsd-current@FreeBSD.ORG Subject: Re: My problems with GEOM Message-ID: <20021007033742.GD19470@dan.emsphone.com> In-Reply-To: <Pine.NEB.3.96L.1021006221733.10328B-100000@fledge.watson.org> References: <OE110ebgE7Pv1Sl0l3b000165b9@hotmail.com> <Pine.NEB.3.96L.1021006221733.10328B-100000@fledge.watson.org>
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In the last episode (Oct 06), Robert Watson said: > On Sun, 6 Oct 2002, Seth Hieronymus wrote: > > Thanks for the pointers. Here's the trace 1: > > mi_switch(c0bb9988,14,c01bbe60,c0bb98f0,1) at mi_switch+0x290 > > msleep(c03778a0,0,68,c03153d7,14) at msleep+0x477 > > g_waitidle(1,c0314e10,c18f2885,c031bd64,c0b8dc20) at g_waitidle+0x8b > > g_dev_clone(0,c18f2885,6,c879cc08,c0bb6d80) at g_dev_clone+0x37 > > getdiskbyname(c18f2880,c879cc80,c0202f87,c18f2880,c18f2880) at > > getdiskbyname+0xa2 > > setrootbyname(c18f2880,c18f2880,c879cc48,c18f2880,20302020) at > > setrootbyname+0x11 > > vfs_mountroot_try(c1867220,c01912e0,c0bb8dc0,c879cd0c,c019134b) at > > vfs_mountroot_try+0x127 > > vfs_mountroot(c034b1c0,1,c0316bc7,216,203a2065) at vfs_mountroot+0x70 > > start_init(0,c879cd48,c031790b,34d,726f772d) at start_init+0x6b > > fork_exit(c01912e0,0,c879cd48) at fork_exit+0xa5 > > fork_trampoline() at fork_trampoline+0x1a > > This sounds identical (modulo geom details) to the la-la land my > boxes were going off into. As I said, I never really followed up, > but it looked like one of the i/o/device transactions during the root > mount was getting "lost", and as a result the init thread was never > waking up. I'll probably have to let someone with more i/o clue take > it from here. I'm not at the machine right now, but I noticed that my work machine would hang for a long time (> 5 minutes) on bootup, then continue. I finally figured out what the problem was: it has two SCSI cdrom drives, and geom apparently needed to get info on the disks for some reason. Neither drive had a CD in it, and it had to time out a read request on both drives before it would boot. Try sticking a data CD in your cdrom and see if the hang goes away. -- Dan Nelson dnelson@allantgroup.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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