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Date:      Sat, 2 Oct 2010 10:17:19 +0100
From:      Bruce Cran <bruce@cran.org.uk>
To:        freebsd-stable@freebsd.org
Subject:   60s boot hang on Xen running 8-STABLE when using ATA_CAM
Message-ID:  <20101002101719.000043c7@unknown>

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I rebuilt my 8-STABLE kernel today using ATA_CAM to use the ada driver
on my Xen VPS and found that the boot will hang for 60s, apparently
because a CD image hasn't been configured for the virtual CD-ROM
drive?  After the "run_interrupt_driven_hooks: still waiting after 60
seconds for xpt_config" message, the boot continues and the system
appears to work fine.

Timecounter "TSC" frequency 2000085054 Hz quality 800
Timecounters tick every 10.000 msec
lo0: bpf attached
ata0: reset tp1 mask=03 ostat0=50 ostat1=00
ata0: stat0=0x50 err=0x01 lsb=0x00 msb=0x00
ata0: stat1=0x00 err=0x01 lsb=0xff msb=0xff
ata0: reset tp2 stat0=50 stat1=00 devices=0x1
(aprobe0:ata0:0:0:0): SIGNATURE: 0000
ata1: reset tp1 mask=03 ostat0=50 ostat1=41
ata1: stat0=0x50 err=0x01 lsb=0xff msb=0xff
ata1: stat1=0x00 err=0x01 lsb=0x14 msb=0xeb
ata1: reset tp2 stat0=50 stat1=00 devices=0x20001
(aprobe0:ata1:0:0:0): SIGNATURE: 0000
ata1: reset tp1 mask=03 ostat0=50 ostat1=00
ata1: stat0=0x50 err=0x01 lsb=0xff msb=0xff
ata1: stat1=0x00 err=0x01 lsb=0x14 msb=0xeb
ata1: reset tp2 stat0=50 stat1=00 devices=0x20001
(aprobe0:ata1:0:0:0): ATA_IDENTIFY. ACB: ec 00 00 00 00 40 00 00 00 00
00 00 (aprobe0:ata1:0:0:0): CAM status: Command timeout
(aprobe0:ata1:0:0:0): SIGNATURE: 0000
run_interrupt_driven_hooks: still waiting after 60 seconds for
xpt_config ata1: reset tp1 mask=03 ostat0=50 ostat1=00
ata1: stat0=0x50 err=0x01 lsb=0xff msb=0xff
ata1: stat1=0x00 err=0x01 lsb=0x14 msb=0xeb
ata1: reset tp2 stat0=50 stat1=00 devices=0x20001
(aprobe0:ata1:0:0:0): ATA_IDENTIFY. ACB: ec 00 00 00 00 40 00 00 00 00
00 00 (aprobe0:ata1:0:0:0): CAM status: Command timeout
(aprobe0:ata1:0:1:0): SIGNATURE: eb14
ada0 at ata0 bus 0 scbus0 target 0 lun 0
ada0: <QEMU HARDDISK 0.9.1> ATA-7GEOM: new disk ada0
 device
ada0: Serial Number QM00001
ada0: 16.700MB/s transfers (WDMA2, PIO 8192bytes)
ada0: 10752MB (22020096 512 byte sectors: 16H 63S/T 16383C)

A full verbose dmesg is available at
http://www.cran.org.uk/~brucec/freebsd/dmesg.ATA_CAM.hang.txt

-- 
Bruce Cran



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