Date: Mon, 12 Oct 2009 19:35:17 +0200 (CEST) From: =?ISO-8859-1?Q?Trond_Endrest=F8l?= <Trond.Endrestol@fagskolen.gjovik.no> To: FreeBSD questions <freebsd-questions@freebsd.org> Subject: Trouble making a Tandberg LTO-2 HH S619 work with AMANDA 2.6.1p1 on 7.2-STABLE as of today Message-ID: <alpine.BSF.2.00.0910121851260.84355@mail.fig.ol.no>
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Hi,
I'm having trouble making a Tandberg LTO-2 HH S619 work with AMANDA
2.6.1p1 on 7.2-STABLE i386 cvsup'ed as of today local time.
The tape drive is connected to channel A on:
ahc0: <Adaptec 3960D Ultra160 SCSI adapter> port 0xec00-0xecff mem 0xff8ff000-0xff8fffff irq 17 at device 8.0 on pci1
ahc0: [ITHREAD]
aic7899: Ultra160 Wide Channel A, SCSI Id=7, 32/253 SCBs
ahc1: <Adaptec 3960D Ultra160 SCSI adapter> port 0xe800-0xe8ff mem 0xff8fe000-0xff8fefff irq 18 at device 8.1 on pci1
ahc1: [ITHREAD]
aic7899: Ultra160 Wide Channel B, SCSI Id=7, 32/253 SCBs
During (re)boot the following is recorded in dmesg:
(probe5:ahc0:0:5:0): TEST UNIT READY. CDB: 0 0 0 0 0 0
(probe5:ahc0:0:5:0): CAM Status: SCSI Status Error
(probe5:ahc0:0:5:0): SCSI Status: Check Condition
(probe5:ahc0:0:5:0): UNIT ATTENTION asc:29,2
(probe5:ahc0:0:5:0): SCSI bus reset occurred
(probe5:ahc0:0:5:0): Retrying Command (per Sense Data)
sa0 at ahc0 bus 0 target 5 lun 0
sa0: <TANDBERG LTO-2 HH S619> Removable Sequential Access SCSI-3 device
sa0: 160.000MB/s transfers (80.000MHz DT, offset 64, 16bit)
Is these messages normal for this drive? A valid tape was present in
the drive during reboot.
This is a brand new drive and in it's maiden voyage the other night
AMANDA complained about running out of tape after a mere 10 GB worth
of data. LTO2 tapes usually have a raw capacity of about 200 GB.
Next I ran amtapetype to get the new characteristics, but got the
following instead:
amanda@XXX:~>mt -f /dev/sa0 comp off
amanda@XXX:~>mt -f /dev/sa0 status
Mode Density Blocksize bpi Compression
Current: 0x42 variable 0 disabled
- ---------available modes---------
0: 0x42 variable 0 0x1
1: 0x42 variable 0 0x1
2: 0x42 variable 0 0x1
3: 0x42 variable 0 0x1
- ---------------------------------
Current Driver State: at rest.
- ---------------------------------
File Number: 0 Record Number: 0 Residual Count 0
amanda@XXX:~>/usr/bin/time -l amtapetype -t "TANDBERG-LTO2-HH-TANDBERG-200GB-WITHOUT-COMPRESSION" /dev/sa0
Applying heuristic check for compression.
Wrote random (uncompressible) data at 22260042.3225806 bytes/sec
Wrote fixed (compressible) data at 22260042.3225806 bytes/sec
Compression: disabled
Writing one file to fill the volume.
Wrote less than 100MB to the device: Error writing block: Unknown
error: 0
9133,58 real 4747,35 user 316,77 sys
11700 maximum resident set size
3 average shared memory size
730 average unshared data size
127 average unshared stack size
1614 page reclaims
1 page faults
0 swaps
18 block input operations
2 block output operations
0 messages sent
0 messages received
0 signals received
44390062 voluntary context switches
26325015 involuntary context switches
amanda@XXX:~>
I managed to observe the block count rising well into 6000000 before
the abrupt ending which usually indicates the tape being completely
filled assuming a block size of 32K which is the default for
amtapetype.
I can (re)boot the server with verbose logging turned on if that can
improve the diagnosis.
I've ordered a new Adaptec 39320 to use with this drive.
If anyone has a better suggestion please let's have it.
Trond.
- --
- ----------------------------------------------------------------------
Trond Endrestøl | Trond.Endrestol@fagskolen.gjovik.no
ACM, NAS, NUUG, SAGE, USENIX | FreeBSD 7.2-STABLE & Alpine 2.00
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