0002304: Serious problems with both backup AND restore using standalone
tape drive; some restores may be impossible
Capsule summary: SD with standalone tape drive does not honor volume
poll interval, spam-polls the drive MANY times a second, resulting in
huge job status reports for tape-spanning backups (but the backups do at
least succeed). The gigantic job status messages (which can be over
30MB) cause BAT to become unresponsive for up to several minutes while
loading them.
On restores, the SD gives up after polling the drive 10 times, which
takes a fraction of a second. This causes restores from standalone tape
drives to fail the first time there is not a tape in the drive, either
at the beginning of the job or at the first tape change.
Can anyone else with a standalone tape drive verify this?
Has anyone with an autochanger tested restores that span tape boundaries?
Director Storage configuration:
Storage {
Name = babylon5-sd
Address = babylon5.babcom.com
SDPort = 9103
Password = "xxxxxxxxxxxx"
Device = LTO-4
Media Type = LTO-4
Maximum Concurrent Jobs = 20
Autochanger = no
}
SD device configuration:
Device {
Name = LTO-4
Media Type = LTO-4
Archive Device = /dev/nst0
Changer Device = /dev/sg5
Drive Index = 0
Autochanger = no
AutomaticMount = yes # when device opened, read it
AlwaysOpen = yes
OfflineOnUnmount = yes
RemovableMedia = yes
RandomAccess = no
Maximum File Size = 5GB
Maximum Block Size = 2048000
Spool Directory = /var/tmp/bacula
Maximum Spool Size = 10GB
Maximum Job Spool Size = 5GB
Volume Poll Interval = 1m
}
--
Phil Stracchino
Babylon Communications
ph...@caerllewys.net
p...@co.ordinate.org
Landline: +1.603.293.8485
Mobile: +1.603.998.6958
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