Please translate "dislink" to "dislike"

On 02/26/2016 03:52 PM, Kern Sibbald wrote:
> This is not a bextract error per-se, rather when Bacula is reading the
> volume, the checksum it found in a block is not the same as the checksum
> it computed with the data that was read.  Normally this means that your
> disk drive is going bad.  In your case, you aare using a mounted volume,
> and in addition to the possibility of having a broken disk, there are
> possibly networking errors, and possibly errors with NFS. I dislink CIFS
> and NFS for Bacula volumes, because if you write something to those
> Volumes, then read it back, you do not always get the same data -- some
> of the data may be buffered and not actually written to disk.
>
> Probably the best way to dig into this is to setup a job that does a
> VerifyData on the job that was backed up.  This will tell you if Bacula
> is able to read back a job that it wrote.  Note, this feature
> (VerifyData) only exists in Bacula version 7.4.0.
>
> Another thing to do would be to run bls to list the blocks on the volume
> -- I am not sure it computes checksums though.
>
> Best regards,
> Kern
>
> On 02/24/2016 06:37 PM, Andrea Venturoli wrote:
>> Hello.
>>
>> I'm getting an error and having an hard time figuring the reason, so I'm
>> looking for some insight.
>>
>> I have a job that backups a Windows client. It
>> _ dumps some databases in "Client Run Before Job";
>> _ backs the dump files normally to a NAS which is running bacula-sd;
>> _ runs a "Run After Job" script that:
>>      mounts that NAS via NFS;
>>      runs bextract on the storage file used by the job;
>>      uploads those file somewhere else.
>>
>> It has been working flawlessly for a long time, but in the last two days
>> I'm getting messages like:
>>
>>> 23-Feb 22:52 dir JobId 5202: AfterJob: bextract: butil.c:289-0 Using 
>>> device: "BackupXXXXXX" for reading.
>>> 23-Feb 22:52 dir JobId 5202: AfterJob: 23-Feb 22:52 bextract JobId 0: Ready 
>>> to read from volume "GestI1242" on file device "BackupXXXXXX" 
>>> (/mnt/XXXXXXbackup).
>>> 23-Feb 22:52 dir JobId 5202: AfterJob: bextract JobId 0: -rwxrwxrwx   1 
>>> root     wheel      300042752 2016-02-23 22:51:07  
>>> /usr/local/local/XXXXXXDBs/2016022322521456264333/C:/Users/Public/Bacula/1.bak
>>> 23-Feb 22:52 dir JobId 5202: AfterJob: bextract JobId 0: -rwxrwxrwx   1 
>>> root     wheel      187002368 2016-02-23 22:51:12  
>>> /usr/local/local/XXXXXXDBs/2016022322521456264333/C:/Users/Public/Bacula/2.bak
>>> 23-Feb 22:52 dir JobId 5202: AfterJob: 23-Feb 22:52 bextract JobId 0: 
>>> Error: block_util.c:352 Volume data error at 0:53803237!
>>> 23-Feb 22:52 dir JobId 5202: AfterJob: Block checksum mismatch in block=835 
>>> len=64512: calc=6c456dfa blk=f9b4bb13
>>> 23-Feb 22:52 dir JobId 5202: AfterJob: 23-Feb 22:52 bextract JobId 0: 
>>> Error: file_attrs.c:568 File size of restored file 
>>> /usr/local/local/XXXXXXDBs/2016022322521456264333/C:/Users/Public/Bacula/2.bak
>>>  not correct. Original 187002368, restored 90963752.
>>> 23-Feb 22:52 dir JobId 5202: AfterJob: 2 files restored.
>>
>> There should be 4 restored files, but the second gives an error and the
>> procedure stops.
>>
>> I know NFS has problems with very large files (>2GB), but the storage
>> file in this case is less than 100MB.
>> What can cause that "Volume data error"?
>>
>>     bye & Thanks
>>      av.
>>
>> P.S. The version is 7.0.5 on FreeBSD 9.3 and the NAS is a Zyxel NSA-310
>> (I've been using several such objects with bacula without problems for a
>> long time).
>>
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