I have a 20/40 GB DLT tape drive with a 7 slot changer hooked up
to my household server running NetBSD 3.1.  I'm seeing weird errors and
timeouts whenever I try to do a backup.  The timeouts may be due to the
machine really being too slow for the tape drive (replacing it is on
the todo list).  Does anybody know what I can do about these errors?
Would 4.0 fix them?

Dec  3 06:07:41 server /netbsd: aha0: host_stat 13
Dec  3 06:07:41 server /netbsd: st1(aha0:0:5:0): generic HBA error
Dec  3 06:08:23 server /netbsd: aha0: host_stat 13
Dec  3 06:08:23 server /netbsd: st1(aha0:0:5:0): generic HBA error
Dec  3 06:10:44 server /netbsd: aha0: host_stat 13
Dec  3 06:10:44 server /netbsd: st1(aha0:0:5:0): generic HBA error
Dec  3 06:13:20 server /netbsd: st1(aha0:0:5:0): timed out
Dec  3 06:13:20 server /netbsd: st1(aha0:0:5:0):  Check Condition on CDB: 0x1e 00 00 00 00 00
Dec  3 06:13:20 server /netbsd: SENSE KEY:  Aborted Command
Dec  3 06:13:20 server /netbsd: ASC/ASCQ:  Overlapped Commands Attempted
Dec  3 06:13:20 server /netbsd:
Dec  3 06:13:25 server /netbsd: st1(aha0:0:5:0): timed out
Dec  3 06:13:25 server /netbsd: st1(aha0:0:5:0):  Check Condition on CDB: 0x1e 00 00 00 00 00
Dec  3 06:13:25 server /netbsd: SENSE KEY:  Aborted Command
Dec  3 06:13:25 server /netbsd: ASC/ASCQ:  Overlapped Commands Attempted
Dec  3 06:13:25 server /netbsd:
Dec  3 06:23:34 server /netbsd: aha0: host_stat 13
Dec  3 06:23:34 server /netbsd: st1(aha0:0:5:0): generic HBA error
Dec  3 06:29:29 server /netbsd: aha0: host_stat 13
Dec  3 06:29:29 server /netbsd: st1(aha0:0:5:0): generic HBA error
Dec  3 06:35:19 server /netbsd: st0(aha0:0:4:0): timed out
Dec  3 06:35:29 server /netbsd: st0(aha0:0:4:0): timed out

     Also, I have 2/4 GB DAT drive in the machine which is giving
"interesting" errors.  Is the drive toast?

Dec  3 09:14:54 server /netbsd: st0(aha0:0:4:0):  Check Condition on CDB: 0x0a 00 01 00 00 00
Dec  3 09:14:54 server /netbsd: SENSE KEY:  Hardware Error
Dec  3 09:14:54 server /netbsd: ASC/ASCQ:  ASC 0x44 ASCQ 0xa0
Dec  3 09:14:54 server /netbsd:
Dec  3 09:19:11 server /netbsd: st0(aha0:0:4:0):  Check Condition on CDB: 0x10 00 00 00 02 00
Dec  3 09:19:11 server /netbsd: SENSE KEY:  Hardware Error
Dec  3 09:19:11 server /netbsd: INFO FIELD:  -737148928
Dec  3 09:19:11 server /netbsd: ASC/ASCQ:  ASC 0x44 ASCQ 0xa0
Dec  3 09:19:11 server /netbsd:

     Here is the dmesg:

NetBSD 3.1 (GENERIC) #0: Tue Oct 31 04:27:07 UTC 2006
	builds@b0.netbsd.org:/home/builds/ab/netbsd-3-1-RELEASE/i386/200610302053Z-obj/home/builds/ab/netbsd-3-1-RELEASE/src/sys/arch/i386/compile/GENERIC
total memory = 40572 KB
avail memory = 31208 KB
BIOS32 rev. 0 found at 0xfdb70
mainbus0 (root)
cpu0 at mainbus0: (uniprocessor)
cpu0: Intel Pentium (P54C) (586-class), 132.88 MHz, id 0x52c
cpu0: features 1bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8>
pci0 at mainbus0 bus 0: configuration mode 1
pci0: i/o space, memory space enabled, rd/line, rd/mult, wr/inv ok
pchb0 at pci0 dev 0 function 0
pchb0: Intel 82439HX (TXC) System Controller (rev. 0x01)
pcib0 at pci0 dev 7 function 0
pcib0: Intel 82371SB (PIIX3) PCI-ISA Bridge (rev. 0x01)
piixide0 at pci0 dev 7 function 1
piixide0: Intel 82371SB IDE Interface (PIIX3) (rev. 0x00)
piixide0: device disabled (at device)
vga1 at pci0 dev 18 function 0: ATI Technologies Mach64 CT (rev. 0x0a)
wsdisplay0 at vga1 kbdmux 1: console (80x25, vt100 emulation)
wsmux1: connecting to wsdisplay0
rtk0 at pci0 dev 19 function 0: Realtek 8139 10/100BaseTX
rtk0: interrupting at irq 15
rtk0: Ethernet address 00:40:f4:73:1b:46
ukphy0 at rtk0 phy 7: Generic IEEE 802.3u media interface
ukphy0: OUI 0x000000, model 0x0000, rev. 0
ukphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
isa0 at pcib0
lpt0 at isa0 port 0x378-0x37b irq 7
aha0 at isa0 port 0x330-0x333 irq 11 drq 5
aha0: model AHA-1542CF, firmware B.0
aha0: unlocking mailbox interface
aha0: async, parity
scsibus0 at aha0: 8 targets, 8 luns per target
tr0 at isa0 port 0xa20-0xa23 iomem 0xd8000-0xdbfff irq 9
tr0: address 10:00:5a:7a:9f:86 ring speed 16 Mbps
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
com1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, working fifo
pckbc0 at isa0 port 0x60-0x64
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
we1 at isa0 port 0x300-0x31f iomem 0xcc000-0xcffff irq 10
we1: SMC8216T Ethernet (16-bit)
we1: Ethernet address 00:00:c0:0d:78:7b
pcppi0 at isa0 port 0x61
midi0 at pcppi0: PC speaker
sysbeep0 at pcppi0
isapnp0 at isa0 port 0x279: ISA Plug 'n Play device support
npx0 at isa0 port 0xf0-0xff: using exception 16
fdc0 at isa0 port 0x3f0-0x3f7 irq 6 drq 2
isapnp0: no ISA Plug 'n Play devices found
fd0 at fdc0 drive 0: 1.44MB, 80 cyl, 2 head, 18 sec
Kernelized RAIDframe activated
scsibus0: waiting 2 seconds for devices to settle...
sd0 at scsibus0 target 0 lun 0: <FUJITSU, M2954S-512, 0142> disk fixed
sd0: 4149 MB, 5714 cyl, 9 head, 165 sec, 512 bytes/sect x 8498506 sectors
cd0 at scsibus0 target 2 lun 0: <PLEXTOR, CD-ROM PX-20TS, 1.01> cdrom removable
st0 at scsibus0 target 4 lun 0: <ARCHIVE, Python 28219-XXX, 4.31> tape removable
st0: drive empty
st1 at scsibus0 target 5 lun 0: <DEC, TZ887    (C) DEC, D996> tape removable
st1: drive empty
ch0 at scsibus0 target 5 lun 1: <DEC, TZ Media Changer, D996> changer removable
ch0: 7 slots, 1 drive, 1 picker, 0 portals
boot device: sd0
root on sd0a dumps on sd0b
root file system type: ffs
tr0: Token Ring opened
wsdisplay0: screen 1 added (80x25, vt100 emulation)
wsdisplay0: screen 2 added (80x25, vt100 emulation)
wsdisplay0: screen 3 added (80x25, vt100 emulation)
wsdisplay0: screen 4 added (80x25, vt100 emulation)
wsdisplay0: screen 5 added (80x25, vt100 emulation)
wsdisplay0: screen 6 added (80x25, vt100 emulation)
wsdisplay0: screen 7 added (80x25, vt100 emulation)