LTO-8 stop to write after 51465158656 bytes

[JaimeVM]

Hola,

Our LTO-8 Ultrim 30750 drive writes no more than 51465158656 bytes.
After 20 minutes in the log appears:

Mar 7 16:05:42 localhost ltfs[11124]: 2b77 LTFS20042E EIO in write
Mar 7 16:05:42 localhost ltfs[11124]: 2b77 LTFS20076I Triggering drive diagnostic dump
Mar 7 16:06:04 localhost ltfs[11124]: 2b77 LTFS20096I Diagnostic dump complete
Mar 7 16:06:04 localhost ltfs[11124]: 2b77 LTFS12045E Cannot write block: backend call failed (-5). Dropping to read-only mode.
Mar 7 16:06:04 localhost ltfs[11124]: 2b77 LTFS11072E Cannot write blocks: failed to write to the medium (-5)
Mar 7 16:06:04 localhost ltfs[11124]: 2b77 LTFS11077E Cannot write: failed to write blocks to the medium (-5)
Mar 7 16:06:04 localhost ltfs[11124]: 2b77 LTFS13014W Data partition writer: failed to write data to the tape (-5)
Mar 7 16:25:27 localhost ltfs[11124]: 2b74 LTFS11034I Volume unmounted successfully
Mar 7 16:25:27 localhost ltfs[11124]: 2b74 LTFS20076I Triggering drive diagnostic dump
Mar 7 16:25:28 localhost ltfs[11124]: 2b74 LTFS20096I Diagnostic dump complete

Any idea what could be going on?

Saludos

Jaime

[sbhat09]

Hello @JaimeVM,

If the issue had occurred once, it may be due to drives rebuilding within the RAID group while the data write process was in progress. Sufficient amount of media is not available to complete the writes.

If the issue is recurring, please look for any hardware errors or failures.

Regards,
Srinivas Bhat

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Note: All of my comments are my own and are not any official representation of HPE.

[Gans_Tapes]

Hola Jaime,

Could you confirm that the LTFS environment is supported?  (Server/OS/HBA compatibility from DAPR Matrix).

• Has this ever worked beyond the 51GB  ? 
• Have you tested it using a different tape and is the result the same?
• Is the Drive running the latest firmware? 

If the drive is still under warranty you may open a support case with logs for a review. 

Regards,

Gans

[JaimeVM]

hi gans,

The drive is recognized like a Sequential-Access HPE Ultrium 8-SCSI N4Q1 PQ: 0 ANSI: 6

It use to work with Lto-7 cartdriges.

I tried two pc workstations with Centos 7 (Kernel version: Linux version 3.10.0-1160.el7.x86_64), always with an HP221 HBA (15.10.10.(C)) and HPE StoreOpen Software version 3.5.0, log level 2, LTFS Format Specification version 2.4.0

Yes, i tested whith al teast 4 HP LTO-8.

Gracias!

Saludos

Jaime

[Gans_Tapes]

Hola Jaime, 

LTFS StoreOpen Standalone 3.5 (latest) has been tested with the following OS:
Linux:
RHEL 8.x
RHEL 7.x

Windows server 2022 / 2019 / 2016
Windows 10

Mac OS X

Drive is running NQ41 which is the latest firmware.
Please refer to the matrix for the appropriate driver and firmware versions for the H221 adapter.  You might want to format/reinitialize the tape via the L&TT tool  and then attempt to write data to the tape again. I would suggest you attempt to use the same HBA on a supported OS /  RHEL 7.x or 8.x server.  

What backup application are you using to write to tape or is it the StoreOpen LTFS utility ?

The two workstations you tried, are you able to write beyond the 51GB on an LTO7 tape?

Regards,

Gans