topic Re: About XCP preserve-atime option in Data Protection

About XCP preserve-atime option

shirotan — Wed, 04 Jun 2025 10:05:34 GMT

Is there any material about the difference in the load of the source storage and the time required for processing when Preserve-atime of each processing is enabled?

Re: About XCP preserve-atime option

hmoubara — Wed, 26 Jan 2022 03:08:34 GMT

Hello,

The options -preserver-atime restores the last accessed date of all the files specified on the source.

When we scan a SMB share, the access time is modified on the files (if the storage system is configured
to modify atime on read), because XCP is reading the files one by one.
XCP never changes the atime. XCP just reads the file, which triggers an update on atime.
Use the -preserve-atime option to reset the atime to the original value before XCP read the file.

Hope this answer your question.

Thanks

Re: About XCP preserve-atime option

shirotan — Wed, 26 Jan 2022 05:50:08 GMT

Hello hmoubara

Thank you for your reply.

Unfortunately it has not been answered.

I understand that it is an option to restore that the Atime is changed by performing a scan.

My question is by using this option,
It's about performance impact and increased time required.

Re: About XCP preserve-atime option

hmoubara — Wed, 26 Jan 2022 05:57:16 GMT

Without using that parameter will reduce the run time of the scan job.