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

[David Teigland]

On Tue, Sep 03, 2019 at 05:02:25AM +0000, Heming Zhao wrote:
> Test result URL:
> https://gist.github.com/zhaohem/f9951bb016962cdd07bf7c9d3d7fd525

At least part of the problem is caused by lvm waiting on udev, e.g.
WARNING: Device /dev/vdf76 not initialized in udev database even after waiting 10000000 microseconds.

I recently wrote this patch to stop that:
https://sourceware.org/git/?p=lvm2.git;a=commitdiff;h=0534cd9cd4066c88a7dd815f2f3206a177169334

With this older patch, obtain_device_list_from_udev=0 can also help avoid it:
https://sourceware.org/git/?p=lvm2.git;a=commitdiff;h=3ebce8dbd2d9afc031e0737f8feed796ec7a8df9

Also, I just pushed out this commit that makes the pvscan activations
faster when there are many PVs:
https://sourceware.org/git/?p=lvm2.git;a=commit;h=25b58310e3d606a85abc9bd50991ccb7ddcbfe25

Dave