[lustre-discuss] lfs data_version $filename

[E.S. Rosenberg]

This is just a guess - could it be related to ZFS backends? Allowing for
snapshots etc.

On Thu, Apr 5, 2018 at 10:53 PM, Ms. Megan Larko <dobsonunit at gmail.com>
wrote:

> Greetings List!
>
> What is the number from the command "lfs data_version $filename " telling
> me?
>
> I do not see "data_version" documented in lfs -h, man lfs, nor in lustre
> manual..
>
> I do know that if I have a zero-length file my robinhood scan of my Lustre
> mount point indicates that "lfs get_version" failed.  As the file
> in-question is zero length, I have no problem with this (other than lines
> in my robinhood lustre.log file making it large).
>
> I understand that Lustre File System uses three numbers to validate data
> integrity.  How does the number returned from "lfs data_version" come into
> play?  What reference number is that one?
>
> Thank you in advance for the education.
> Cheers,
> megan
>
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