[PARPORT] pt getting wedged with HP 5G external


Ian Soboroff (ian@cs.umbc.edu)
28 Apr 1999 14:14:45 -0400


i'm having some problems with tapes recently with my HP 5G external.
i saw this first under 2.1.131, upgraded to 2.2.6 but that hasn't
stopped the problem.

modprobe'ing and doing a full dump using cpio works great... dmesg
says:
paride: version 1.04 installed
paride: epat registered as protocol 0
pt: pt version 1.04, major 96
parport0: PC-style at 0x378 [SPP]
pt0: Sharing parport0 at 0x378
pt0: epat 1.01, Shuttle EPAT chip c6 at 0x378, mode 5 (EPP-32), delay 0
pt0: HP COLORADO 5GBe, master, blocksize 512, 2458 MB

my dump script rewinds the tape and does a cpio -i --only-verify-crc
on the dump afterwards, and during this phase, at some random point in
the tape, i get a
/bin/cpio: read error: Input/output error

when this happens, the load spikes and i have to wait about 10 minutes
for the machine to respond to keypresses. in the dmesg there is:

pt0: Request sense before command: alt=0xd0 stat=0xd0 err=0x1d0 loop=600001 phase=208
pt0: identify before command: alt=0xd0 stat=0xd0 err=0x1d0 loop=600001 phase=208
pt0: Request sense before command: alt=0xd0 stat=0xd0 err=0x1d0 loop=600001 phase=208

i tried rewinding and running through again, with the same results,
and after a while the drive gets wedged such that even mt rewind just
hangs there:

pt0: Sense key: 7, ASC: ffffffa0, ASQ: 71
pt0: identify before command: alt=0x58 stat=0x58 err=0x100 loop=600001 phase=1
pt0: Request sense before command: alt=0x58 stat=0x58 err=0x100 loop=600001 phase=1
pt0: rewind before command: alt=0x58 stat=0x58 err=0x100 loop=600001 phase=1
pt0: Request sense before command: alt=0x58 stat=0x58 err=0x100 loop=600001 phase=1
pt0: identify before command: alt=0x58 stat=0x58 err=0x100 loop=600001 phase=1
pt0: Request sense before command: alt=0x58 stat=0x58 err=0x100 loop=600001 phase=1
pt0: rewind before command: alt=0x58 stat=0x58 err=0x100 loop=600001 phase=1
pt0: Request sense before command: alt=0x58 stat=0x58 err=0x100 loop=600001 phase=1

any insights? i've tried this with a delay of 1 as well, with similar
results. could this be a bad tape? doesn't feel like that to
me... the messages just look like drive confusion. is there more
information i should try to gather?

thanks,
ian

-- 
----
Ian Soboroff                                       ian@cs.umbc.edu
University of MD Baltimore County      http://www.cs.umbc.edu/~ian

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This archive was generated by hypermail 2.0b3 on Wed 28 Apr 1999 - 14:17:29 EDT