stuck in cam with bad optical media

[Andriy Gapon]

on 05/11/2010 18:06 Garrett Cooper said the following:
> On Fri, Nov 5, 2010 at 6:48 AM, Andriy Gapon <avg at icyb.net.ua> wrote:
>>
>> [I am probably just having an unlucky day.]
>>
>> I tried to burn (with growisofs) a DVD+RW disk which seems to have developed some
>> problems.
>> First, the burning process got stuck at the same percentage and the drive started
>> to make unusual sounds.  Then, the following messages appeared in system log:
>> kernel: (cd0:ahcich5:0:0:0): READ(10). CDB: 28 0 0 0 0 0 0 0 1 0
>> kernel: (cd0:ahcich5:0:0:0): CAM status: SCSI Status Error
>> kernel: (cd0:ahcich5:0:0:0): SCSI status: Check Condition
>> kernel: (cd0:ahcich5:0:0:0): SCSI sense: MEDIUM ERROR asc:2,0 (No seek complete)
>> kernel: (cd0:ahcich5:0:0:0): READ(10). CDB: 28 0 0 0 0 0 0 0 1 0
>> kernel: (cd0:ahcich5:0:0:0): CAM status: SCSI Status Error
>> kernel: (cd0:ahcich5:0:0:0): SCSI status: Check Condition
>> kernel: (cd0:ahcich5:0:0:0): SCSI sense: MEDIUM ERROR asc:2,0 (No seek complete)
>> kernel: (cd0:ahcich5:0:0:0): READ(10). CDB: 28 0 0 0 0 0 0 0 1 0
>> kernel: (cd0:ahcich5:0:0:0): CAM status: SCSI Status Error
>> kernel: (cd0:ahcich5:0:0:0): SCSI status: Check Condition
>> kernel: (cd0:ahcich5:0:0:0): SCSI sense: MEDIUM ERROR asc:2,0 (No seek complete)
>> kernel: (cd0:ahcich5:0:0:0): READ(10). CDB: 28 0 0 0 0 0 0 0 1 0
>> kernel: (cd0:ahcich5:0:0:0): CAM status: SCSI Status Error
>> kernel: (cd0:ahcich5:0:0:0): SCSI status: Check Condition
>> kernel: (cd0:ahcich5:0:0:0): SCSI sense: Deferred error: MEDIUM ERROR asc:2,0 (No
>> seek complete)
>> kernel: ahcich5: Timeout on slot 7
>> kernel: ahcich5: is 00000000 cs 00000180 ss 00000000 rs 00000180 tfd 58 serr 00000000
>> kernel: (cd0:ahcich5:0:0:0): cddone: got error 0x5 back
>>
>> After that growisofs either remained or became stuck in the following state:
>> 42433 100119 growisofs        initial thread   mi_switch+0x1de sleepq_switch+0xdb
>> sleepq_wait+0x45 _sleep+0x295 cam_periph_ccbwait+0x40 cam_periph_runccb+0x68
>> passioctl+0x260 devfs_ioctl_f+0xf8 kern_ioctl+0x262 ioctl+0x168 syscallenter+0x3be
>> syscall+0x41 Xfast_syscall+0xe2
>>
>> Any commands that tried to access the device (cdcontrol eject, camcontrol reset
>> 5:0:0) also got stuck.
>> Only reboot helped to recover the device.
>>
>> I understand that bad media is bad, but it happens.
>> I think that cam and ahci typically recover from errors/timeouts, so somehting
>> must have gone wrong in this case.
>>
>> P.S. I have already thrown out the bad disk - irritation won over reason when that
>> happened, unfortunately :(
> 
>     I think we are in the same boat (I've run into this problem on two
> different machines with my revisions of CURRENT) :(... I resorted to
> using an external DVD writer to write media (which is in and of itself
> a PITA):
> 
> $ camcontrol devlist; uname -a
> <ATAPI iHAS124   Y BL0V>           at scbus1 target 0 lun 0 (cd0,pass0)
> <Hitachi HDS721010CLA332 JP4OA39C>  at scbus2 target 0 lun 0 (pass1,ada0)
> FreeBSD bayonetta.local 9.0-CURRENT FreeBSD 9.0-CURRENT #2 r214347M:
> Mon Oct 25 04:38:54 PDT 2010     root@:/usr/obj/usr/src/sys/BAYONETTA
> amd64
> 
>     Have you tried non-rewritable CDs and DVDs yet (something that I
> need to try too)?

Not sure if you refer to exactly the same problem.
I regularly successfully burn various media (re-writable and write-once).
This time this was definitely a bad (degraded) disk.

-- 
Andriy Gapon