Good day !

One day i got following message: "Error: Bacula cannot write on tape Volume 
"000003L6" because:
The number of files mismatch! Volume=110 Catalog=111"

I was wonder because i've already tested my tape drive configuration via btape.
It had happened next day after i've applied my new configuration.

Here's my tape drive device config:

Device {
  Name = "LTO6-Drive-1"
  Device Type = tape
  Media Type = LTO-6
  Drive Index = 0;
  Archive Device = /dev/tape5
  Hardware End of Medium = yes
  BSF at EOM = yes
  Use MTIOCGET = yes;
  RandomAccess = no;
  Block Checksum = yes;
  TWO EOF = Yes
  Backward Space Record = yes;
  Forward Space Record = yes;
  Forward Space File = yes;
  Fast Forward Space File = Yes
  Block Positioning = yes;
  AutomaticMount = yes; # when device opened, read it
  AlwaysOpen = yes;
  RemovableMedia = yes;
  Autochanger = yes;
  LabelMedia = yes;
  Alert Command = "sh -c 'smartctl -d scsi -H -l error %c'"
  Spool Directory = /mnt/bacula/td5
  Maximum Volume Size = 2450 GB
  Autoselect = yes
  }

I've did one more test using tape utility and test failed. So btape recommend 
me to switch off "Hardware End of Medium" and "Fast Forward Space File" 
options. If i do that my tape drive works well, but extremely slow.
Can somebody give me advice, what can i do to use this option properly? Maybe i 
did something wrong?

I have LTO6 tape drive model 7104473 LTO 6 FC for StorageTek SL150.
Bacula version: 7.2.0.

If it's problem of my tape drive can somebody give my advice where i should dig 
to find resolution and what kind of tests except btape i can run to find out is 
my tape drive suitable for this option or not?

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