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Date:      Mon, 30 Jan 2017 10:29:12 +0000
From:      Shahin Hasanov <shahinhasanov@hotmail.com>
To:        FREEBSD_QUESTION <freebsd-questions@freebsd.org>
Subject:   Problem with HP LTO-6 Ultrium 6250 Tape Drive 
Message-ID:  <VI1PR04MB1263B913FDEB509D78A9B815B64B0@VI1PR04MB1263.eurprd04.prod.outlook.com>

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Dear Collogues ,

I have  problem with LTO-6 Ultrium 6250 Tape Drive and cartridges 6.25. TB.
 # FreeBSD 10.2-STABLE #0,


I could no write more than 2.5 TB in despite that I include compression mod=
e like bellow



# mt -f /dev/nsa0 rewind
# mt -f /dev/nsa0 fsf 5
# mt -f /dev/nsa0 comp on
# tar cvf /dev/nsa0 BACKUP_2016
during writing process It gives me : tar: Write error
Then I'm trying to list of archive it gives me:
# mt -f /dev/nsa0 rewind
# mt -f /dev/nsa0 fsf 5
# tar tvf /dev/nsa0
...... at end
tar: Truncated input file (needed 833464320 bytes, only 637740032 available=
)
tar: Error exit delayed from previous errors.


# mt -f /dev/nsa0 status -v
Drive: sa0: <HP Ultrium 6-SCSI 353D> Serial Number: HUJ5314CTA
---------------------------------
Mode      Density              Blocksize      bpi      Compression
Current:  0x5a:LTO-6           variable       384607   enabled (0x1)
---------------------------------
Current Driver State: at rest.
---------------------------------
Partition:   0      Calc File Number:   5     Calc Record Number: 0
Residual:    0  Reported File Number:   5 Reported Record Number: 231942564
Flags: None
---------------------------------
Tape I/O parameters:
  Maximum I/O size allowed by driver and controller (maxio): 131072 bytes
  Maximum I/O size reported by controller (cpi_maxio): 262144 bytes
  Maximum block size supported by tape drive and media (max_blk): 16777215 =
bytes
  Minimum block size supported by tape drive and media (min_blk): 1 bytes
  Block granularity supported by tape drive and media (blk_gran): 0 bytes
  Maximum possible I/O size (max_effective_iosize): 131072 bytes


best regards,

Shahin Hasanov




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