Bacula : Tape Cannot label Volume because it is already labeled

when i try to label barcode, through me below error.


3302 Autochanger "loaded? drive 0", result is Slot 20.
3920 Cannot label Volume because it is already labeled: "000001"
Label command failed for Volume 000005L4.
Media record for Slot 4 Volume "000002L4" already exists.



Resolution:-

1 make sure bacula-sd stop.

/etc/init.d/bacula-sd stop
Shutting down bacula-sd: [ OK ]


Then created a script, simply test.sh and do the following entry.

/usr/libexec/bacula/mtx-changer /dev/sg2 load 1 /dev/st0 0
mt -f /dev/st0 rewind
mt -f /dev/st0 weof
mt -f /dev/st0 rewind

/usr/libexec/bacula/mtx-changer /dev/sg2 unload 1 /dev/st0 0
/usr/libexec/bacula/mtx-changer /dev/sg2 load 5 /dev/st0 0
mt -f /dev/st0 rewind
mt -f /dev/st0 weof
mt -f /dev/st0 rewind

/usr/libexec/bacula/mtx-changer /dev/sg2 unload 5 /dev/st0 0
/usr/libexec/bacula/mtx-changer /dev/sg2 load 8 /dev/st0 0
mt -f /dev/st0 rewind
mt -f /dev/st0 weof
mt -f /dev/st0 rewind

/usr/libexec/bacula/mtx-changer /dev/sg2 unload 8 /dev/st0 0
/usr/libexec/bacula/mtx-changer /dev/sg2 load 9 /dev/st0 0
mt -f /dev/st0 rewind
mt -f /dev/st0 weof
mt -f /dev/st0 rewind

/usr/libexec/bacula/mtx-changer /dev/sg2 unload 9 /dev/st0 0
/usr/libexec/bacula/mtx-changer /dev/sg2 load 10 /dev/st0 0
mt -f /dev/st0 rewind
mt -f /dev/st0 weof
mt -f /dev/st0 rewind

/usr/libexec/bacula/mtx-changer /dev/sg2 unload 10 /dev/st0 0
/usr/libexec/bacula/mtx-changer /dev/sg2 load 16 /dev/st0 0
mt -f /dev/st0 rewind
mt -f /dev/st0 weof
mt -f /dev/st0 rewind

/usr/libexec/bacula/mtx-changer /dev/sg2 unload 16 /dev/st0 0
/usr/libexec/bacula/mtx-changer /dev/sg2 load 20 /dev/st0 0
mt -f /dev/st0 rewind
mt -f /dev/st0 weof
mt -f /dev/st0 rewind

/usr/libexec/bacula/mtx-changer /dev/sg2 unload 20 /dev/st0 0
/usr/libexec/bacula/mtx-changer /dev/sg2 load 21 /dev/st0 0
mt -f /dev/st0 rewind
mt -f /dev/st0 weof
mt -f /dev/st0 rewind

/usr/libexec/bacula/mtx-changer /dev/sg2 unload 21 /dev/st0 0
/usr/libexec/bacula/mtx-changer /dev/sg2 load 22 /dev/st0 0
mt -f /dev/st0 rewind
mt -f /dev/st0 weof
mt -f /dev/st0 rewind

/usr/libexec/bacula/mtx-changer /dev/sg2 unload 22 /dev/st0 0
/usr/libexec/bacula/mtx-changer /dev/sg2 load 17 /dev/st0 0
mt -f /dev/st0 rewind
mt -f /dev/st0 weof
mt -f /dev/st0 rewind


save file and run

#./test.sh

it takes few min (15-20 min to complete)

Once finished then run bconsole

[root@um1ubackup bacula]# bconsole
Connecting to Director mybackup:9101
1000 OK: bacula-dir Version: 2.0.3 (06 March 2007)
Enter a period to cancel a command.
*update slots
Automatically selected Catalog: MyCatalog
Using Catalog "MyCatalog"
The defined Storage resources are:
1: TL-2000
2: File
Select Storage resource (1-2): 1
Connecting to Storage daemon TL-2000 at 10.45.9.72:9103 ...
3306 Issuing autochanger "slots" command.
Device "LTO-3" has 24 slots.
Connecting to Storage daemon TL-2000 at 10.45.9.72:9103 ...
3306 Issuing autochanger "list" command.
Volume "000005L4" not found in catalog. Slot=5 InChanger set to zero.

Then type label barcode command

*label barcodes
The defined Storage resources are:
1: TL-2000
2: File
Select Storage resource (1-2): 1
Connecting to Storage daemon TL-2000 at 10.45.9.72:9103 ...
3306 Issuing autochanger "slots" command.
Device "LTO-3" has 24 slots.
Connecting to Storage daemon TL-2000 at 10.45.9.72:9103 ...
3306 Issuing autochanger "list" command.
The following Volumes will be labeled:
Slot Volume
==============
5 000005L4

Do you want to continue? (yes|no): yes
Automatically selected Pool: Default
Connecting to Storage daemon TL-2000 at 10.45.9.72:9103 ...
Sending label command for Volume "000005L4" Slot 5 ...
3301 Issuing autochanger "loaded? drive 0" command.
3302 Autochanger "loaded? drive 0", result: nothing loaded.
3304 Issuing autochanger "load slot 5, drive 0" command.
3305 Autochanger "load slot 5, drive 0", status is OK.
3301 Issuing autochanger "loaded? drive 0" command.
3302 Autochanger "loaded? drive 0", result is Slot 5.
3000 OK label. VolBytes=64512 DVD=0 Volume="000005L4" Device="LTO-3" (/dev/st0)
Catalog record for Volume "000005L4", Slot 5 successfully created.

Done...now simply run list volumes to see all volumes.

*list volumes
Pool: Default
+---------+------------+-----------+---------+----------+----------+--------------+---------+------+-----------+-----------+---------------------+
| MediaId | VolumeName | VolStatus | Enabled | VolBytes | VolFiles | VolRetention | Recycle | Slot | InChanger | MediaType | LastWritten |
+---------+------------+-----------+---------+----------+----------+--------------+---------+------+-----------+-----------+---------------------+
| 2 | 000002L4 | Append | 1 | 129,024 | 1 | 31,536,000 | 1 | 4 | 1 | LTO-3 | 2011-01-28 00:06:58 |
| 3 | 000004L4 | Append | 1 | 64,512 | 0 | 31,536,000 | 1 | 6 | 1 | LTO-3 | 0000-00-00 00:00:00 |
| 4 | 000001L4 | Append | 1 | 128,960 | 0 | 31,536,000 | 1 | 1 | 1 | LTO-3 | 0000-00-00 00:00:00 |
| 5 | 000003L4 | Append | 1 | 64,512 | 0 | 31,536,000 | 1 | 10 | 1 | LTO-3 | 0000-00-00 00:00:00 |
| 6 | 000005L4 | Append | 1 | 64,512 | 0 | 31,536,000 | 1 | 5 | 1 | LTO-3 | 0000-00-00 00:00:00 |
+---------+------------+-----------+---------+----------+----------+--------------+---------+------+-----------+-----------+---------------------+
*





some explanation about script.

mtx-changer = control SCSI media changer devices

/usr/lib/bacula/mtx-changer /dev/sg2 load 1 /dev/st0 0

in this command :- you have a tape in slot 1, it will be loaded into drive (0) with the help of media changer mtx.

/usr/lib/bacula/mtx-changer /dev/sg2 unload 1 /dev/st0 0

tape is loaded from slot 1, will be unloaded.


mt -f /dev/st0 rewind mt = control magnetic tape drive operation , -f = device ,rewind=Rewind the tape.

mt -f /dev/st0 weof weof = Write count EOF marks at current position.

mt -f /dev/st0 rewind rewind = Rewind the tape.





Hope will work for you.

Read More

Using btape to Verify your Tape Drive

[root@um1ubackup bacula]# btape -c bacula-sd.conf /dev/st0
Tape block granularity is 1024 bytes.
btape: butil.c:286 Using device: "/dev/st0" for writing.
27-Jan 16:42 btape: 3301 Issuing autochanger "loaded? drive 0" command.
27-Jan 16:42 btape: 3302 Autochanger "loaded? drive 0", result is Slot 24.
27-Jan 16:42 btape: 3301 Issuing autochanger "loaded? drive 0" command.
27-Jan 16:42 btape: 3302 Autochanger "loaded? drive 0", result is Slot 24.
btape: btape.c:368 open device "LTO-3" (/dev/st0): OK
*

then type test

*test

=== Write, rewind, and re-read test ===

I'm going to write 1000 records and an EOF
then write 1000 records and an EOF, then rewind,
and re-read the data to verify that it is correct.

This is an *essential* feature ...

btape: btape.c:825 Wrote 1000 blocks of 64412 bytes.
btape: btape.c:499 Wrote 1 EOF to "LTO-3" (/dev/st0)
btape: btape.c:841 Wrote 1000 blocks of 64412 bytes.
btape: btape.c:499 Wrote 1 EOF to "LTO-3" (/dev/st0)
btape: btape.c:850 Rewind OK.
1000 blocks re-read correctly.
Got EOF on tape.
1000 blocks re-read correctly.
=== Test Succeeded. End Write, rewind, and re-read test ===


=== Write, rewind, and position test ===

I'm going to write 1000 records and an EOF
then write 1000 records and an EOF, then rewind,
and position to a few blocks and verify that it is correct.

This is an *essential* feature ...

btape: btape.c:937 Wrote 1000 blocks of 64412 bytes.
btape: btape.c:499 Wrote 1 EOF to "LTO-3" (/dev/st0)
btape: btape.c:953 Wrote 1000 blocks of 64412 bytes.
btape: btape.c:499 Wrote 1 EOF to "LTO-3" (/dev/st0)
btape: btape.c:962 Rewind OK.
Reposition to file:block 0:4
Block 5 re-read correctly.
Reposition to file:block 0:200
Block 201 re-read correctly.
Reposition to file:block 0:999
Block 1000 re-read correctly.
Reposition to file:block 1:0
Block 1001 re-read correctly.
Reposition to file:block 1:600
Block 1601 re-read correctly.
Reposition to file:block 1:999
Block 2000 re-read correctly.
=== Test Succeeded. End Write, rewind, and re-read test ===



=== Append files test ===

This test is essential to Bacula.

I'm going to write one record in file 0,
two records in file 1,
and three records in file 2

btape: btape.c:469 Rewound "LTO-3" (/dev/st0)
btape: btape.c:1571 Wrote one record of 64412 bytes.
btape: btape.c:1573 Wrote block to device.
btape: btape.c:499 Wrote 1 EOF to "LTO-3" (/dev/st0)
btape: btape.c:1571 Wrote one record of 64412 bytes.
btape: btape.c:1573 Wrote block to device.
btape: btape.c:1571 Wrote one record of 64412 bytes.
btape: btape.c:1573 Wrote block to device.
btape: btape.c:499 Wrote 1 EOF to "LTO-3" (/dev/st0)
btape: btape.c:1571 Wrote one record of 64412 bytes.
btape: btape.c:1573 Wrote block to device.
btape: btape.c:1571 Wrote one record of 64412 bytes.
btape: btape.c:1573 Wrote block to device.
btape: btape.c:1571 Wrote one record of 64412 bytes.
btape: btape.c:1573 Wrote block to device.
btape: btape.c:499 Wrote 1 EOF to "LTO-3" (/dev/st0)
27-Jan 16:43 btape: 3301 Issuing autochanger "loaded? drive 0" command.
27-Jan 16:43 btape: 3302 Autochanger "loaded? drive 0", result is Slot 24.
btape: btape.c:368 open device "LTO-3" (/dev/st0): OK
btape: btape.c:469 Rewound "LTO-3" (/dev/st0)
btape: btape.c:1091 Now moving to end of medium.
btape: btape.c:520 Moved to end of medium.
We should be in file 3. I am at file 3. This is correct!

Now the important part, I am going to attempt to append to the tape.

btape: btape.c:1571 Wrote one record of 64412 bytes.
btape: btape.c:1573 Wrote block to device.
btape: btape.c:499 Wrote 1 EOF to "LTO-3" (/dev/st0)
btape: btape.c:469 Rewound "LTO-3" (/dev/st0)
Done appending, there should be no I/O errors

Doing Bacula scan of blocks:
1 block of 64448 bytes in file 1
End of File mark.
2 blocks of 64448 bytes in file 2
End of File mark.
3 blocks of 64448 bytes in file 3
End of File mark.
1 block of 64448 bytes in file 4
End of File mark.
Total files=4, blocks=7, bytes = 451,136
End scanning the tape.
We should be in file 4. I am at file 4. This is correct!

The above Bacula scan should have output identical to what follows.
Please double check it ...
=== Sample correct output ===
1 block of 64448 bytes in file 1
End of File mark.
2 blocks of 64448 bytes in file 2
End of File mark.
3 blocks of 64448 bytes in file 3
End of File mark.
1 block of 64448 bytes in file 4
End of File mark.
Total files=4, blocks=7, bytes = 451,136
=== End sample correct output ===

If the above scan output is not identical to the
sample output, you MUST correct the problem
or Bacula will not be able to write multiple Jobs to
the tape.


=== Write, backup, and re-read test ===

I'm going to write three records and an EOF
then backup over the EOF and re-read the last record.
Bacula does this after writing the last block on the
tape to verify that the block was written correctly.

This is not an *essential* feature ...

btape: btape.c:469 Rewound "LTO-3" (/dev/st0)
btape: btape.c:704 Wrote first record of 64412 bytes.
btape: btape.c:715 Wrote second record of 64412 bytes.
btape: btape.c:726 Wrote third record of 64412 bytes.
btape: btape.c:499 Wrote 1 EOF to "LTO-3" (/dev/st0)
btape: btape.c:742 Backspaced over EOF OK.
btape: btape.c:747 Backspace record OK.
btape: btape.c:765
Block re-read correct. Test succeeded!
=== End Write, backup, and re-read test ===



=== Forward space files test ===

This test is essential to Bacula.

I'm going to write five files then test forward spacing

btape: btape.c:469 Rewound "LTO-3" (/dev/st0)
btape: btape.c:1571 Wrote one record of 64412 bytes.
btape: btape.c:1573 Wrote block to device.
btape: btape.c:499 Wrote 1 EOF to "LTO-3" (/dev/st0)
btape: btape.c:1571 Wrote one record of 64412 bytes.
btape: btape.c:1573 Wrote block to device.
btape: btape.c:1571 Wrote one record of 64412 bytes.
btape: btape.c:1573 Wrote block to device.
btape: btape.c:499 Wrote 1 EOF to "LTO-3" (/dev/st0)
btape: btape.c:1571 Wrote one record of 64412 bytes.
btape: btape.c:1573 Wrote block to device.
btape: btape.c:1571 Wrote one record of 64412 bytes.
btape: btape.c:1573 Wrote block to device.
btape: btape.c:1571 Wrote one record of 64412 bytes.
btape: btape.c:1573 Wrote block to device.
btape: btape.c:499 Wrote 1 EOF to "LTO-3" (/dev/st0)
btape: btape.c:1571 Wrote one record of 64412 bytes.
btape: btape.c:1573 Wrote block to device.
btape: btape.c:1571 Wrote one record of 64412 bytes.
btape: btape.c:1573 Wrote block to device.
btape: btape.c:499 Wrote 1 EOF to "LTO-3" (/dev/st0)
btape: btape.c:1571 Wrote one record of 64412 bytes.
btape: btape.c:1573 Wrote block to device.
btape: btape.c:499 Wrote 1 EOF to "LTO-3" (/dev/st0)
btape: btape.c:469 Rewound "LTO-3" (/dev/st0)
btape: btape.c:1305 Now forward spacing 1 file.
We should be in file 1. I am at file 1. This is correct!
btape: btape.c:1317 Now forward spacing 2 files.
We should be in file 3. I am at file 3. This is correct!
btape: btape.c:469 Rewound "LTO-3" (/dev/st0)
btape: btape.c:1330 Now forward spacing 4 files.
We should be in file 4. I am at file 4. This is correct!

btape: btape.c:1348 Now forward spacing 1 more file.
We should be in file 5. I am at file 5. This is correct!

=== End Forward space files test ===


Ah, I see you have an autochanger configured.
To test the autochanger you must have a blank tape
that I can write on in Slot 1.

Do you wish to continue with the Autochanger test? (y/n): y


=== Autochanger test ===

3301 Issuing autochanger "loaded" command.
Slot 24 loaded. I am going to unload it.
3302 Issuing autochanger "unload 24 0" command.
unload status=OK 0
3303 Issuing autochanger "load 1 0" command.
3303 Autochanger "load 1 0" status is OK.
27-Jan 16:46 btape: 3301 Issuing autochanger "loaded? drive 0" command.
27-Jan 16:46 btape: 3302 Autochanger "loaded? drive 0", result is Slot 1.
btape: btape.c:368 open device "LTO-3" (/dev/st0): OK
btape: btape.c:1235 Rewound "LTO-3" (/dev/st0)
btape: btape.c:1242 Wrote EOF to "LTO-3" (/dev/st0)

The test autochanger worked!!

Read More

Linux SCSI Tricks for Tape drive

tested on Dell TL-2000



[root@tbmh2ubackup01 bacula]# lsscsi
[6:0:0:0]    tape    IBM      ULT3580-HH4      BBNF  /dev/st2
[7:0:0:0]    tape    IBM      ULT3580-HH4      BBNF  /dev/st3
[8:0:0:0]    tape    IBM      ULT3580-HH4      BBNF  /dev/st1
[9:0:0:0]    tape    IBM      ULT3580-HH4      BBNF  /dev/st0




lsscsi command if not then run


[root@um1ubackup bacula]# cat /proc/scsi/scsi
Attached devices:
Host: scsi4 Channel: 00 Id: 00 Lun: 00
Vendor: IBM Model: 3573-TL Rev: 9.50
Type: Medium Changer ANSI SCSI revision: 05
Host: scsi6 Channel: 00 Id: 00 Lun: 00
Vendor: IBM Model: ULT3580-HH4 Rev: A233
Type: Sequential-Access ANSI SCSI revision: 03
Host: scsi5 Channel: 00 Id: 00 Lun: 00
Vendor: IBM Model: 3573-TL Rev: 9.50
Type: Medium Changer ANSI SCSI revision: 05
Host: scsi7 Channel: 00 Id: 00 Lun: 00
Vendor: IBM Model: ULT3580-HH4 Rev: A233
Type: Sequential-Access ANSI SCSI revision: 03

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bconsole: Error: bnet.c:779 gethostbyname() for host "server.example.com"

Situation:- when i run bconsole command (Bacula’s management Console) to connect, through me below error.

Connecting to Director server.example.com:9101
27-Jan 12:51 bconsole: Error: bnet.c:779 gethostbyname() for host "server.example.com" failed: ERR=Non-authoritative for host not found, or ServerFail.



Resolution:-

Go under /etc/bacula dir

their is a file with name bconsole.conf

edit it accordingly


[root@my1backup bacula]# cat bconsole.conf
#
# Bacula User Agent (or Console) Configuration File
#

Director {
Name = bacula-dir
DIRport = 9101
address = myhostname.com
Password = "**********"
}


Imp:- use can use IP as well but if u want to use FQDN then make sure, entry under /etc/hosts file as well

like this once

cat /etc/hosts

10.10.10.100 myhostname.com


After all this simply run bconsole and hit entre

# bconsole
Connecting to Director myhostname.com:9101
1000 OK: bacula-dir Version: 2.0.3 (06 March 2007)
Enter a period to cancel a command.
*


Working fine.

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CentOS 5.5 64bit named[4474]: network unreachable resolving

an 25 23:15:10 um1udns1 named[4474]: network unreachable resolving '55.9.45.10.in-addr.arpa/PTR/IN': 2001:503:ba3e::2:30#53
Jan 25 23:15:10 um1udns1 named[4474]: network unreachable resolving './NS/IN': 2001:503:ba3e::2:30#53
Jan 25 23:15:12 um1udns1 named[4474]: network unreachable resolving '55.9.45.10.in-addr.arpa/PTR/IN': 2001:7fd::1#53
Jan 25 23:15:12 um1udns1 named[4474]: network unreachable resolving '55.9.45.10.in-addr.arpa/PTR/IN': 2001:500:1::803f:235#53
Jan 25 23:15:12 um1udns1 named[4474]: network unreachable resolving './NS/IN': 2001:7fd::1#53
Jan 25 23:15:12 um1udns1 named[4474]: network unreachable resolving './NS/IN': 2001:500:1::803f:235#53
Jan 25 23:15:12 um1udns1 named[4474]: network unreachable resolving '55.9.45.10.in-addr.arpa/PTR/IN': 2001:dc3::35#53
Jan 25 23:15:12 um1udns1 named[4474]: network unreachable resolving '55.9.45.10.in-addr.arpa/PTR/IN': 2001:500:2f::f#53
Jan 25 23:15:12 um1udns1 named[4474]: network unreachable resolving '55.9.45.10.in-addr.arpa/PTR/IN': 2001:503:c27::2:30#53
Jan 25 23:15:12 um1udns1 named[4474]: network unreachable resolving './NS/IN': 2001:dc3::35#53
Jan 25 23:15:12 um1udns1 named[4474]: network unreachable resolving './NS/IN': 2001:500:2f::f#53
Jan 25 23:15:12 um1udns1 named[4474]: network unreachable resolving './NS/IN': 2001:503:c27::2:30#53



Resolution:--

Only allow BIND to resolve IPV4 & disable IPV6

Setting are following

under /etc/sysconfig/named

add this line end of the file

OPTIONS=”-4″


After save file, and restart named service.

That its your problem resolved.

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named[3349]: the working directory is not writable

While tail to message shows me this error..

Jan 25 16:03:44 um1udns1 named[3349]: listening on IPv4 interface lo, 127.0.0.1#53
Jan 25 16:03:44 um1udns1 named[3349]: listening on IPv4 interface eth0, 10.45.9.55#53
Jan 25 16:03:44 um1udns1 named[3349]: command channel listening on 127.0.0.1#953
Jan 25 16:03:44 um1udns1 named[3349]: command channel listening on ::1#953
Jan 25 16:03:44 um1udns1 named[3349]: the working directory is not writable



Resolution.

under /var/named/chroot/var/

#chmod 775 named (rwx for both)

restart named service.

now onward error disappear in logs.

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yum setup on Redhat

yum setup on Redhat

Situation :- i insatlled Redhat 5.5, 64bit then try to install virtulization,KVM but lots of depencies error.

Solution

then i create local repo file to install by YUM,for that i copy all media under dir eg. /redhatmedia/redhatdvd/...

then create conf file

#vi /etc/yum.repos.d/media.repo

[dir1]
mediaid=34336363.878563
name=Redhat DVD
baseurl=file:///redhatmedia/redhatdvd/vt
enabled=1
gpgcheck=0

[dir2
mediaid=34336363.878563
name=Redhat DVD
baseurl=file:///redhatmedia/redhatdvd/server
enabled=1
gpgcheck=0

[dir3]
mediaid=34336363.878563
name=Redhat DVD
baseurl=file:///redhatmedia/redhatdvd/cluster
enabled=1
gpgcheck=0

[dir4]
mediaid=34336363.878563
name=Redhat DVD
baseurl=file:///redhatmedia/redhatdvd/cluster-storage
enabled=1
gpgcheck=0



Save file.

*** mediaid u can find in dvd from file .discinfo

After this run

#yum clean all

then

#yum groupinstall kvm -y

around 30 depencies installed with size 22MB with in 1 min.

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