Re: Confirm hardware compression is working

Gabriel Menini <[email protected]>
Newsgroups gmane.comp.bacula.user
Message-ID <[email protected]>
Hello, Radosław. 

----- Original Message -----

> Hello,

> czw., 24 paź 2024 o 20:24 Gabriel Menini < [ mailto:[email protected] |
> [email protected] ] > napisał(a):

>> Here is a volume info:
>> *list volume=Axxxx
>> +---------+------------+-----------+---------+-----------------+----------+--------------+---------+------+-----------+-----------+---------------------+
>>| mediaid | volumename | volstatus | enabled | volbytes | volfiles | volretention
>> | | recycle | slot | inchanger | mediatype | lastwritten |
>> +---------+------------+-----------+---------+-----------------+----------+--------------+---------+------+-----------+-----------+---------------------+
>>| 20 | Axxxx | Append | 1 | 603,938,958,336 | 645 | 432,000 | 1 | 5 | 1 | LTO-6 |
>> | 2024-10-24 09:02:55 |
>> +---------+------------+-----------+---------+-----------------+----------+--------------+---------+------+-----------+-----------+---------------------+

> Bacula here shows the size uncompressed.



So... if Bacula shows _uncompressed_ 603,938,958,336 bytes (562 GB, aprox.) and the tape is marked as full ... it should be correct to assume, regarding the information provided by `tapeinfo`, that the drive is compressing data. So the tape should have enough free space. 

I am looking for a way to find out if data is being compressed, in order to take advantage of the tape's full capacity. 
OTOH, considering I am trying to check if hardware compression is actually being performed, perhaps it's beyond of the scope of this list. 



> best regards
> --
> Radosław Korzeniewski

Best regards,
-- 
Gabriel


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