On Tue, 18 Jul 2006, Kern Sibbald wrote:
> The only way I can correct it (if there is really a problem) is to write a
> regression script that demonstrates the problem, preferably using the virtual
> disk autochanger script, otherwise, I don't have enough information, and I
> don't know how to repeat it.
Does this help?
I am manually running 5 jobs each from 2 clients,
using spooling to /var/bacula/spool/drive[0|1]
There are 2 pools involved
Each of the backup sets is approx 1000Gb
Each of the clients has 2-3 jobs for each pool
(I appear to be I/O bound on the spool disk, but this shouldn't be
affecting anything other than generating some shoeshining.)
Observations seem to indicate that when a job is using drive0, the storage
director is fine, however when it's using drive1 it blocks access to
drive0 and also blocks most status queries.
Configuration is as follows:
Storage { # definition of myself
Name = Storage-sd
SDPort = 9103 # Director's port
WorkingDirectory = "/var/bacula/working"
Pid Directory = "/var/run"
Maximum Concurrent Jobs = 100
Heartbeat Interval = 61s
}
Director {
Name = Director-dir
Password = "Gibberish"
}
Device {
Name = FileStorage
Media Type = File
Archive Device = /var/bacula/Filestorage
LabelMedia = yes; # lets Bacula label unlabeled media
Random Access = Yes;
AutomaticMount = yes; # when device opened, read it
RemovableMedia = no;
AlwaysOpen = no;
}
Autochanger {
Name = MSL6000-changer
Device = MSL6000-0
Device = MSL6000-1
Changer Command = "/etc/bacula/mtx-changer %c %o %S %a %d"
Changer Device = /dev/sg16
}
Device {
Name = MSL6000-0 #
Drive Index = 0
Media Type = LTO-2
AutoChanger = yes;
Changer Device = /dev/sg16
Archive Device = /dev/nst0
AutomaticMount = yes; # when device opened, read it
AlwaysOpen = yes;
LabelMedia = yes; # lets Bacula label unlabeled media
RemovableMedia = yes;
RandomAccess = no;
Volume Poll Interval = 7200
# Enable the Alert command only if you have the mtx package loaded
Alert Command = "sh -c 'tapeinfo -f %c |grep TapeAlert|cat'"
Spool Directory = /var/bacula/spool/MSL6000-0
Maximum Spool Size = 200000000000 # 200Gb
Maximum Job Spool Size = 10000000000 # 10Gb
}
Device {
Name = MSL6000-1 #
Drive Index = 1
Device Type = Tape
Media Type = LTO-2
AutoChanger = yes;
Changer Device = /dev/sg16
Archive Device = /dev/nst1
AutomaticMount = yes; # when device opened, read it
AlwaysOpen = yes;
LabelMedia = yes; # lets Bacula label unlabeled media
RemovableMedia = yes;
RandomAccess = no;
Volume Poll Interval = 7200
# Enable the Alert command only if you have the mtx package loaded
Alert Command = "sh -c 'tapeinfo -f %c |grep TapeAlert|cat'"
Spool Directory = /var/bacula/spool/MSL6000-1
Maximum Spool Size = 200000000000 # 200Gb
Maximum Job Spool Size = 10000000000 # 10Gb
}
# A DVD device
#
Device {
Name = "DVD-Writer"
Media Type = DVD
Archive Device = /dev/hda
LabelMedia = yes; # lets Bacula label unlabeled media
Random Access = Yes;
AutomaticMount = yes; # when device opened, read it
RemovableMedia = yes;
AlwaysOpen = no;
MaximumPartSize = 800M;
RequiresMount = yes;
MountPoint = /media/cdrecorder
MountCommand = "/bin/mount -t iso9660 -o ro %a %m";
UnmountCommand = "/bin/umount %m";
Spool Directory = /var/bacula/spool/DVD
Maximum Spool Size = 200000000000 # 200Gb
Maximum Job Spool Size = 10000000000 # 10Gb
WritePartCommand = "/etc/bacula/dvd-handler %a write %e %v"
FreeSpaceCommand = "/etc/bacula/dvd-handler %a free"
}
Messages {
Name = Standard
director = Director-dir = all
}
>
>>
>>> On 18.07.2006, at 16:04, Alan Brown wrote:
>>>> I'm not sure about this yet....
>>>>
>>>> It appears that when running spooling and concurrent jobs on an
>>>> autochanger with multiple tape drives, that the tape drives are being
>>>> locked on a per-changer basis and not on a per-drive one.
>>>>
>>>>
>>>> IE: Full spool files are only being flushed to one drive at a time, even
>>>> when there are spool files ready for both tape drives.
>>>>
>>>>
>>>> Can anyone else confirm?
>>>>
>>>> Kern?
>>>>
>>>> AB
>>>>
>>>>
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