Hi,

I am getting the following errors while running large jobs with data spanning 
>2 tapes:

23-Aug 21:37 rosalind-sd: 3305 Autochanger "load slot 7, drive 0", status is 
OK.
23-Aug 21:37 rosalind-sd: 3301 Issuing autochanger "loaded drive 0" command.
23-Aug 21:37 rosalind-sd: 3302 Autochanger "loaded drive 0", result is Slot 7.
23-Aug 21:38 rosalind-sd: Recycled volume "Chromosome0031" on device "Drive-1" 
(/dev/nst0), all previous data lost.
23-Aug 21:38 rosalind-sd: New volume "Chromosome0031" mounted on 
device "Drive-1" (/dev/nst0) at 23-Aug-2007 21:38.
23-Aug 21:38 rosalind-sd: fantom-dataOut.2007-08-22_23.10.12 Error: 
block.c:538 Write error at 0:1756 on device "Drive-1" (/dev/nst0). 
ERR=Input/output error.
23-Aug 21:38 rosalind-sd: fantom-dataOut.2007-08-22_23.10.12 Error: Error 
writing final EOF to tape. This Volume may not be readable.
dev.c:1542 ioctl MTWEOF error on "Drive-1" (/dev/nst0). ERR=Input/output 
error.
23-Aug 21:38 rosalind-sd: End of medium on Volume "Chromosome0031" 
Bytes=113,218,556 Blocks=1,755 at 23-Aug-2007 21:38.

This started with version 1.36.1 that we were running originally and persisted 
through upgrade to 1.38.11. I have built and installed version 2.2.0 today 
but haven't run large backups yet. I am trying to test and eliminate any 
possible hardware/driver configuration problems first. Regular btape "test" 
and "auto" tests completed perfectly, now I want to run "fill" test but 
documentation states multiple-tape variant is still not operational. Is it 
true? Does it mean version 2.2.0 in general can still have problems with 
multi-volume backups?

The server is running Linux kernel 2.4.18smp and have Qualstar RLS-4445 
autochanger with single Sony SDX-700C AIT drive attached to Adaptec 3960D 
Ultra160 SCSI adapter (aic7xxx driver). SCSI RAID is also attached to the 
first channel of the same dual-host adapter. I read that sharing SCSI 
adapters with other devices may create problems but it was running just fine 
for 4 years in this configuration until recently when the amount of backup 
data increased. The problem seems to only appear when a single backup job 
spans 3 or more volumes; spanning 2 volumes has yet to produce an error, 
although I haven't run too many of large jobs - they take a lot of time. But 
every 2+ volume job I've tried has failed.

Here's the tapeinfo output:

# tapeinfo -f /dev/sg2
Product Type: Tape Drive
Vendor ID: 'SONY    '
Product ID: 'SDX-700C        '
Revision: '0103'
Attached Changer: No
SerialNumber: '0002084649'
MinBlock:2
MaxBlock:16777215
SCSI ID: 1
SCSI LUN: 0
Ready: yes
BufferedMode: yes
Medium Type: Not Loaded
Density Code: 0x32
BlockSize: 0
DataCompEnabled: yes
DataCompCapable: yes
DataDeCompEnabled: yes
CompType: 0x3
DeCompType: 0x0
BOP: yes
Block Position: 0

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