jbrsubscribe wrote:
> Josh Fisher wrote:
>
>
>> Michael Fung wrote:
>>
>>> Dear Josh,
>>>
>>>
>>> Thanks for releasing the vchanger script and HOWTO!
>>>
>>> However, I found a problem around line 94:
>>>
>>> # Create nextmag file to hold max magazine index used
>>> if [ ! -f "${statedir}/nextmag" ]; then
>>> echo 0 >"${statedir}/nextmag"
>>>
>>> It created the nextmag file with content "0". That makes the following
>>> section allways gives error "nextmag has invalid value".
>>>
>>> # Check nextmag value
>>> nextmag=`cat "${statedir}/nextmag"`
>>> if [ $? -ne 0 -o "${nextmag}" == "" -o $nextmag -lt 1 -o $nextmag
>>> -gt 99 ]; then
>>> echo "${statedir}/nextmag has invalid value"
>>> return 1
>>> fi
>>>
>> Yes, thank you. That is a bug. It should be:
>>
>> # Check nextmag value
>> nextmag=`cat "${statedir}/nextmag"`
>> if [ $? -ne 0 -o "${nextmag}" == "" -o $nextmag -lt 0 -o $nextmag -gt
>> 99 ]; then
>> echo "${statedir}/nextmag has invalid value"
>> return 1
>> fi
>>
>> I will post an updated version to this list.
>>
>>
>>> Also, before and after changed the script to not gives error, I still
>>> got the error after issue the "label barcodes" command:
>>> Connecting to Storage daemon USBChanger1 at 192.168.1.1:9103 ...
>>> 3306 Issuing autochanger "slots" command.
>>> Device "usb-changer-1" has 0 slots.
>>> No slots in changer to scan.
>>>
>>> I run the script by hand to test output:
>>> [EMAIL PROTECTED] bacula]# ./vchanger /etc/bacula/vchanger1.conf slots
>>> 7
>>>
>>> It reports 7 slots correctly. Could you give me some hints? I am
>>> using Bacula 1.38.11 on RHEL 4 clone.
>>>
>>>
>> Did you run the test by hand as root? If so, then it is likely a
>> permissions problem. Normally, vchanger will run as the user and group
>> that bacula-sd runs as (usually bacula.disk if installed from RPMs).
>> Make sure /etc/bacula/vchanger1.conf can be read by the bacula-sd user
>> and/or group. Likewise, make sure the bacula-sd user and/or group has
>> read/write permissions for the vchanger state directory (probably at
>> /var/bacula/vchanger1). Also, the bacula-sd user/group must have
>> read/write permissions for the mounted USB disk partition.
>>
>>> Many thanks!
>>> Michael
>>>
>>>
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> I am also trying to run this script and I get the sane error as reported by
> Michael..even after I make the suggested changes. In addition to that I
> don't quite understand this Device Resource statement - especially where it
> says ArchiveDecice = /var/bacula/vchanger1/drive0.
>
> #--- drive 0 of the usb-changer-1 autochanger
> Device {
> Name = usb-changer-1-drive-0
> DriveIndex = 0
> Autochanger = yes;
> DeviceType = File
> MediaType = File
> ArchiveDevice = /var/bacula/vchanger1/drive0
> RemovableMedia = no;
> RandomAccess = yes;
> }
>
> Why is that being done? That directory does not actually exist. Perhaps I am
> missing something. If so I would appreciate any help from anyone who has
> managed to get this to work
>
ArchiveDevice specifies the path to a symlink that will point to the
regular file containing the currently "loaded" volume. The symlink is
dynamically created by the script when a volume is "loaded" and deleted
when it is "unloaded". When bacula-sd opens the symlink, it will see
that it is a regular file, not a directory, and read/write to the real
file that the symlink points to.
The problem is likely permissions. For an autochanger with config file
at /etc/bacula/vchanger1, state information directory at
/var/bacula/vchanger1, and the mountpoint for the magazine partitions at
/mnt/vchanger1/magazine, then if bacula-sd is running as user bacula:
1. User bacula must have read/write access to the /var/bacula/vchanger1
directory and everything in it
2. User bacula must have read/write access to the entire filesystem
mounted at /mnt/vchanger1/magazine
3. User bacula must have read access to /etc/bacula/vchanger1.conf
If the script was tested by running it from the command line as root
prior to it being invoked from bacula-sd, then some of those
files/directories will be owned by root. This will cause permissions
problems when it is later invoked by bacula-sd as user bacula.
Using the example above, you can test for a permission problem as root by:
# su bacula /etc/bacula/vchanger /etc/bacula/vchanger1.conf list 1
/var/bacula/vchanger1/drive0 0
..and you can fix permission problems as root by:
# chown -R bacula.disk /var/bacula/vchanger1
# chown bacula.disk /etc/bacula/vchanger1.conf
# chown -R bacula.disk /mnt/vchanger1/magazine
I am working on a revision of the howto and script that will address
this issue and will post it to this list when finished.
> Jerome
>
>
>
>
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