[linux-lvm] system boot time regression when using lvm2-2.03.05

David Teigland teigland at redhat.com
Thu Sep 5 16:55:19 UTC 2019

On Thu, Sep 05, 2019 at 12:35:53PM +0000, Heming Zhao wrote:
> In pvscan_cache_cmd, the code in below area "#if 0 .. #endif take a huge 
> time. When I used below modified code to boot, the time reduced from 
> 1min to 1.389s.

That stops the command from doing any work.  I suspect that in your tests,
the "fast" case is not doing any activation, and the "slow" case is.
Please check where the LVs are being activated in the fast case.

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