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LTO/LTFS wear parameters #488

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642583918 opened this issue Nov 12, 2024 · 1 comment

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642583918 commented Nov 12, 2024

I found two parameters about wear in LTO SCSI documentation, namely "Begining of medium passes" and "Middle of tape passes".

But I wrote the entire tape and found that there was no change in these two parameters.

sg_logs -a /dev/xxx | grep passes

Regarding wear, are there any problems with the two parameters I observed? If so, does LTO provide other wear parameters?

piste-jp added the question label

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piste-jp commented Nov 17, 2024

You can fetch the log page with VEA ltfs.vendor.IBM.logPage while tape is mounting by LTFS.

Please check the code src/libltfs/xattr.c.

Counter value itself is not a scope of this project, it shall be managed by H/W vendors. Please contact to drive hardware vendors if you rally think the value is strange.

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