[Bacula-users] btape fill: ioctl MTWEOF error

[Antoine J. <aja...@bs...>]

Hi.

I am trying to set up a backup with Bacula on OpenBSD. So far I only
used disks and had no issue whatsoever. However I am now trying to use
an LTO-4 drive and this is not a walk in the park.

First I had to write an autochanger script (called chio-changer-openbsd)
based on the several examples in bacula source to cope with specific
OpenBSD outputs. As far as I can tell it works fine (if I can make the
LTO-4 works, I'll send the script to bacula it so that it could maybe be
included in the source directly).
e.g. outputs
# /usr/local/libexec/bacula/chio-changer-openbsd /dev/ch0 list 0 0 0
2:ODD002L4
3:ODD003L4
4:ODD004L4
5:ODD005L4
6:ODD006L4
7:CLN710
8:WEEK01L4
# /usr/local/libexec/bacula/chio-changer-openbsd /dev/ch0 loaded 0 0 0
1
# /usr/local/libexec/bacula/chio-changer-openbsd /dev/ch0 unload 1 0 0 
# /usr/local/libexec/bacula/chio-changer-openbsd /dev/ch0 loaded 0 0 0 
0
# /usr/local/libexec/bacula/chio-changer-openbsd /dev/ch0 slots 0 0 0  


Anyway, back to the issue
btape "test" "weof" "eof" "qfill", all work fine.
However, the "fill" test (multiple tapes) errors out after a little more
than 6 hours with:

Wrote block=12600000, file,blk=813,13999 VolBytes=812,851,135,488 rate=54.22 MB/s
29-Jun 21:57 btape JobId 0: Fatal error: Unable to write EOF. ERR=dev.c:1557 ioctl MTWEOF error on "LTO-4" (/
dev/nrst0). ERR=Input/output error.

29-Jun 21:57 btape JobId 0: Error: Error writing final EOF to tape. This Volume may not be readable.
dev.c:1557 ioctl MTWEOF error on "LTO-4" (/dev/nrst0). ERR=Input/output error.
btape: btape.c:2712 Last block at: 813:15499 this_dev_block_num=15500
btape: btape.c:2747 End of tape 813:15500. Volume Bytes=812,947,968,000. Write rate = 54.20 MB/s
29-Jun 21:57 btape JobId 0: End of medium on Volume "TestVolume1" Bytes=812,947,968,000 Blocks=12,601,500 at 
29-Jun-2012 21:57.
29-Jun 21:57 btape JobId 0: Fatal error: Job 0 canceled.
btape: btape.c:2754 Cannot fixup device error. dev.c:1557 ioctl MTWEOF error on "LTO-4" (/dev/nrst0). ERR=Inpu
t/output error.

btape: btape.c:2284 Flush block failed.
btape: btape.c:2323 Not OK
btape: btape.c:2387 Wrote state file last_block_num1=15499 last_block_num2=0
btape: btape.c:2415 21:57:37: Error during test.


Now, here are the settings I am using for the sd.

------------------------------------------------------------------------
Autochanger {
  Name = Autochanger
  Device = LTO-4
  Changer Command = "/usr/local/libexec/bacula/chio-changer-openbsd %c %o %S %a %d"
  Changer Device = /dev/ch0
}

Device {
  Name = LTO-4
  Media Type = LTO-4
  Archive Device = /dev/nrst0
  Maximum Spool Size = 1342177280 # 10G
  Spool Directory = /var/tmp
  AutomaticMount = yes
  AlwaysOpen = yes
  RemovableMedia = yes
  RandomAccess = no
  AutoChanger = yes
  Use MTIOCGET= no
  Maximum Changer Wait = 6000
  Offline On Unmount = no
  BSF at EOM = yes
  TWO EOF = yes
  Hardware End of Medium = yes
}
------------------------------------------------------------------------

Changing "BSF at EOM", "TWO EOF" and "Hardware End of Medium" values did
not help.
I also switched the hardware to a similar model and the issue keeps
happening.
My next move will be to use "Maximum File Size = 2GB" option...

Meanwhile, any clue would be greatly appreciated :-)
Thanks!

-- 
Antoine