Re: [Bacula-users] Assistance with Autochanger configuration
Hi Patti, > Use /dev/sch0, not /dev/sg2. Bear in mind, udev is not your friend. If you > ever add another tape drive to your library or expand your device fabric, > these device references will/can change with every system boot. As is, the > /dev/sgX references can change with reboots, but if you only have one changer > and one drive, the /dev/sch0 and /dev/nst0 devices should remain static. He seem to have the same problem too https://unix.stackexchange.com/questions/193472/interacting-with-tape-library-on-centos-7-via-mtx Hmm, it doesn't seem to live /dev/sch0. I agree with you that using /dev/sgX isn't reliable, but when I made the change suggested above, it failed with the error below: Tape block granularity is 1024 bytes. btape: butil.c:290-0 Using device: "/dev/nst0" for writing. 05-Nov 13:17 btape JobId 0: 3991 Bad autochanger "loaded? drive 0" command: ERR=Child exited with code 1. Results=/dev/sch0 is not an sg device, or old sg driver > Also, you have "Drive Index = 1" commented out. Uncomment and change it to > "Drive Index = 0". All tape drives in a changer must have an index and the > first one is zero. Give those a try. Hmm, I have seem this previously and when I implemented it, I had this issue. I have 8 tapes, do I believe I need 8 archive device. However, the system only 3 sgX devices. How would one overcome this problem? [root@eng-backup02 ~]# ls -ltr /dev/sg* crw-rw. 1 root disk 21, 0 Oct 10 15:42 /dev/sg0 crw-rw. 1 root tape 21, 1 Nov 5 12:16 /dev/sg1 crw-rw. 1 root tape 21, 2 Nov 5 12:16 /dev/sg2 [root@eng-backup02 ~]# Regards, William ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
Re: [Bacula-users] Assistance with Autochanger configuration
William
I believe that message is generated when it tries to do an unload but the tape
is still in the drive.
Try changing the $BACULA_BASE/etc/mtx-changer.conf and set the "offline"
variable to do an eject before an unload.
Then give it a try.
Jeff
-Original Message-
From: William Muriithi
Sent: Monday, November 5, 2018 11:01 AM
To: Bacula Users Mailing List
Subject: [Bacula-users] Assistance with Autochanger configuration
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Hello,
We have a quantum superloader 3 that seem to be fine when tested through mt and
mtx command.
[root@eng-backup02 ~]# lsscsi -g
[0:2:0:0]diskDELL PERC H710P 3.13 /dev/sda /dev/sg0
[1:0:2:0]tapeIBM ULTRIUM-HH6 E4J1 /dev/st0 /dev/sg1
[1:0:2:1]mediumx QUANTUM UHDL 0091 /dev/sch0 /dev/sg2
[root@eng-backup02 ~]#
When we run btape -c test, the command, it come back successful for all tape
tests. However, for the autochanger, I am getting this error. Have anyone
seen it before and how did you resolve it?
=== Autochanger test ===
3301 Issuing autochanger "loaded" command.
Slot 3 loaded. I am going to unload it.
3302 Issuing autochanger "unload 3 0" command.
unload status=OK 0
3303 Issuing autochanger "load 1 0" command.
3993 Bad autochanger command: /etc/bacula/scripts/mtx-changer /dev/sg2 load 1
/dev/nst0 0
3993 result="Loading media from Storage Element 1 into drive 0...done
": ERR=Child died from signal 15: Termination You must correct this error or
the Autochanger will not work.
*
Below is my storage configurations:
Autochanger {
Name = SuperLoader3
Device = ultrium1
Changer Command = "/etc/bacula/scripts/mtx-changer %c %o %S %a %d"
Changer Device = /dev/sg2
}
Device {
Name = ultrium1
Media Type = LTO-6
Archive Device = /dev/nst0
# Drive Index = 1
LabelMedia = yes; # lets Bacula label unlabeled media
Random Access = no;
AutomaticMount = yes; # when device opened, read it
RemovableMedia = yes;
AlwaysOpen = yes;
Autochanger = yes;
}
Would appreciate any guidance a lot
Regards,
William
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Re: [Bacula-users] Assistance with Autochanger configuration
Sorry about the /dev/sch0. I've written udev rules to use consistent names regardless of what udev does - I do use the /dev/sgX for changer identification. If you've rebooted your system, the output from lsscsi -g may have changed. You still need the Drive Index line in your bacula-sd.conf . Ahhh - bacula-sd runs as the bacula user. Did you add bacula to the tape group? Patti On 11/5/18, 1:34 PM, "William Muriithi" wrote: Hi Patti, > Use /dev/sch0, not /dev/sg2. Bear in mind, udev is not your friend. If you ever add another tape drive to your library or expand your device fabric, these device references will/can change with every system boot. As is, the /dev/sgX references can change with reboots, but if you only have one changer and one drive, the /dev/sch0 and /dev/nst0 devices should remain static. He seem to have the same problem too https://unix.stackexchange.com/questions/193472/interacting-with-tape-library-on-centos-7-via-mtx Hmm, it doesn't seem to live /dev/sch0. I agree with you that using /dev/sgX isn't reliable, but when I made the change suggested above, it failed with the error below: Tape block granularity is 1024 bytes. btape: butil.c:290-0 Using device: "/dev/nst0" for writing. 05-Nov 13:17 btape JobId 0: 3991 Bad autochanger "loaded? drive 0" command: ERR=Child exited with code 1. Results=/dev/sch0 is not an sg device, or old sg driver > Also, you have "Drive Index = 1" commented out. Uncomment and change it to "Drive Index = 0". All tape drives in a changer must have an index and the first one is zero. Give those a try. Hmm, I have seem this previously and when I implemented it, I had this issue. I have 8 tapes, do I believe I need 8 archive device. However, the system only 3 sgX devices. How would one overcome this problem? [root@eng-backup02 ~]# ls -ltr /dev/sg* crw-rw. 1 root disk 21, 0 Oct 10 15:42 /dev/sg0 crw-rw. 1 root tape 21, 1 Nov 5 12:16 /dev/sg1 crw-rw. 1 root tape 21, 2 Nov 5 12:16 /dev/sg2 [root@eng-backup02 ~]# Regards, William ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
Re: [Bacula-users] Assistance with Autochanger configuration
On Mon, Nov 5, 2018 at 5:22 PM William Muriithi wrote: > > Hello, > > We have a quantum superloader 3 that seem to be fine when tested through mt > and mtx command. > > [root@eng-backup02 ~]# lsscsi -g > [0:2:0:0]diskDELL PERC H710P 3.13 /dev/sda /dev/sg0 > [1:0:2:0]tapeIBM ULTRIUM-HH6 E4J1 /dev/st0 /dev/sg1 > [1:0:2:1]mediumx QUANTUM UHDL 0091 /dev/sch0 /dev/sg2 > [root@eng-backup02 ~]# > The H710P is a SAS RAID controller not a SAS HBA, this might have an impact on usage. Cheers ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
Re: [Bacula-users] Assistance with Autochanger configuration
Use /dev/sch0, not /dev/sg2. Bear in mind, udev is not your friend. If you
ever add another tape drive to your library or expand your device fabric, these
device references will/can change with every system boot. As is, the /dev/sgX
references can change with reboots, but if you only have one changer and one
drive, the /dev/sch0 and /dev/nst0 devices should remain static. Also, you
have "Drive Index = 1" commented out. Uncomment and change it to "Drive Index
= 0". All tape drives in a changer must have an index and the first one is
zero. Give those a try.
Patti Clark
Sr. Linux System Administrator
Oak Ridge National Laboratory
On 11/5/18, 12:26 PM, "William Muriithi" wrote:
Hello,
We have a quantum superloader 3 that seem to be fine when tested through mt
and mtx command.
[root@eng-backup02 ~]# lsscsi -g
[0:2:0:0]diskDELL PERC H710P 3.13 /dev/sda /dev/sg0
[1:0:2:0]tapeIBM ULTRIUM-HH6 E4J1 /dev/st0 /dev/sg1
[1:0:2:1]mediumx QUANTUM UHDL 0091 /dev/sch0 /dev/sg2
[root@eng-backup02 ~]#
When we run btape -c test, the command, it come back successful for all
tape tests. However, for the autochanger, I am getting this error. Have
anyone seen it before and how did you resolve it?
=== Autochanger test ===
3301 Issuing autochanger "loaded" command.
Slot 3 loaded. I am going to unload it.
3302 Issuing autochanger "unload 3 0" command.
unload status=OK 0
3303 Issuing autochanger "load 1 0" command.
3993 Bad autochanger command: /etc/bacula/scripts/mtx-changer /dev/sg2 load
1 /dev/nst0 0
3993 result="Loading media from Storage Element 1 into drive 0...done
": ERR=Child died from signal 15: Termination
You must correct this error or the Autochanger will not work.
*
Below is my storage configurations:
Autochanger {
Name = SuperLoader3
Device = ultrium1
Changer Command = "/etc/bacula/scripts/mtx-changer %c %o %S %a %d"
Changer Device = /dev/sg2
}
Device {
Name = ultrium1
Media Type = LTO-6
Archive Device = /dev/nst0
# Drive Index = 1
LabelMedia = yes; # lets Bacula label unlabeled media
Random Access = no;
AutomaticMount = yes; # when device opened, read it
RemovableMedia = yes;
AlwaysOpen = yes;
Autochanger = yes;
}
Would appreciate any guidance a lot
Regards,
William
___
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Bacula-users@lists.sourceforge.net
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[Bacula-users] Assistance with Autochanger configuration
Hello,
We have a quantum superloader 3 that seem to be fine when tested through mt and
mtx command.
[root@eng-backup02 ~]# lsscsi -g
[0:2:0:0]diskDELL PERC H710P 3.13 /dev/sda /dev/sg0
[1:0:2:0]tapeIBM ULTRIUM-HH6 E4J1 /dev/st0 /dev/sg1
[1:0:2:1]mediumx QUANTUM UHDL 0091 /dev/sch0 /dev/sg2
[root@eng-backup02 ~]#
When we run btape -c test, the command, it come back successful for all tape
tests. However, for the autochanger, I am getting this error. Have anyone
seen it before and how did you resolve it?
=== Autochanger test ===
3301 Issuing autochanger "loaded" command.
Slot 3 loaded. I am going to unload it.
3302 Issuing autochanger "unload 3 0" command.
unload status=OK 0
3303 Issuing autochanger "load 1 0" command.
3993 Bad autochanger command: /etc/bacula/scripts/mtx-changer /dev/sg2 load 1
/dev/nst0 0
3993 result="Loading media from Storage Element 1 into drive 0...done
": ERR=Child died from signal 15: Termination
You must correct this error or the Autochanger will not work.
*
Below is my storage configurations:
Autochanger {
Name = SuperLoader3
Device = ultrium1
Changer Command = "/etc/bacula/scripts/mtx-changer %c %o %S %a %d"
Changer Device = /dev/sg2
}
Device {
Name = ultrium1
Media Type = LTO-6
Archive Device = /dev/nst0
# Drive Index = 1
LabelMedia = yes; # lets Bacula label unlabeled media
Random Access = no;
AutomaticMount = yes; # when device opened, read it
RemovableMedia = yes;
AlwaysOpen = yes;
Autochanger = yes;
}
Would appreciate any guidance a lot
Regards,
William
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