Rob Ostrander wrote:
> I am having the same really slow vxa throughput experience. I don't
> have any real numbers to back it up though a job which used to take 4
> hours using dump has take 12+ in bacula. I suspect has to do with either
> the block size, fast forward space file or compression.
>
> Here is the device description I am using:
> Device {
> Name = Drive-1 #
> Drive Index = 0
> Media Type = "VXA Packet Tape"
> Archive Device = /dev/nst0
> AutomaticMount = yes # when device opened, read it
> AlwaysOpen = yes
> RemovableMedia = yes
> RandomAccess = no
> AutoChanger = yes
> Minimum Block Size = 1024
> Maximum Block Size = 1024
> Hardware End of Medium = No
> Fast Forward Space File = No
> Backward Space Record = No
> Backward Space File = Yes
> Forward Space Record = Yes
> Forward Space File = Yes
> Offline On Unmount = Yes
> Label Media = Yes
> }
>
> If you having a vxa drive working well could you please post your Device
> {} settings?
Here are two of them from my setup. I don't think you should use a fixed
block size.
# The big VXA-3 tape drive, used for weekly backups
Device {
Name = VXA3drive
Media Type = VXA3
Archive Device = /dev/nst0
AutomaticMount = yes; # when device opened, read it
AlwaysOpen = yes;
RemovableMedia = yes;
RandomAccess = no;
# specify the changer device so it can be subbed into alert cmd below
Changer Device = /dev/sg0
AutoChanger = no
# Enable the Alert command only if you have the mtx package loaded
Alert Command = "sh -c 'tapeinfo -f %c |grep TapeAlert|cat'"
}
# The old VXA-1 drive, used for occasional static backups
Device {
Name = VXA1drive
Media Type = VXA1
Archive Device = /dev/nst1
AutomaticMount = yes; # when device opened, read it
AlwaysOpen = yes;
RemovableMedia = yes;
RandomAccess = no;
# specify the changer device so it can be subbed into alert cmd below
Changer Device = /dev/sg1
AutoChanger = no
# Enable the Alert command only if you have the mtx package loaded
Alert Command = "sh -c 'tapeinfo -f %c |grep TapeAlert|cat'"
}
Mark Nienberg
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