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From: David Teigland <teigland@redhat.com>
To: Heming Zhao <heming.zhao@suse.com>
Cc: Martin Wilck <mwilck@suse.de>, linux-lvm@redhat.com
Subject: Re: [linux-lvm] system boot time regression when using lvm2-2.03.05
Date: Tue, 3 Sep 2019 10:17:05 -0500	[thread overview]
Message-ID: <20190903151705.GA30692@redhat.com> (raw)
In-Reply-To: <9280276f-8601-cfbc-db46-1dcb28f92229@suse.com>

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

  reply	other threads:[~2019-09-03 15:17 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-29 13:52 [linux-lvm] system boot time regression when using lvm2-2.03.05 Heming Zhao
2019-08-29 14:37 ` David Teigland
2019-09-03  5:02   ` Heming Zhao
2019-09-03 15:17     ` David Teigland [this message]
2019-09-04  8:13       ` Heming Zhao
2019-09-05 12:35         ` Heming Zhao
2019-09-05 16:55           ` David Teigland
2019-09-06  4:31             ` Heming Zhao
2019-09-06  5:01               ` Heming Zhao
2019-09-06  6:51                 ` Martin Wilck
2019-09-06  8:46                   ` Heming Zhao
2019-09-06 14:15                     ` David Teigland
2019-09-06 14:26                     ` David Teigland
2019-09-06 14:03                   ` David Teigland
2019-09-09 11:42                     ` Heming Zhao
2019-09-09 14:09                       ` David Teigland
2019-09-10  8:01                         ` Martin Wilck
2019-09-10 15:20                           ` David Teigland
2019-09-10 20:38                             ` Zdenek Kabelac
2019-09-11  7:17                               ` Martin Wilck
2019-09-11  9:13                                 ` Zdenek Kabelac
2019-09-12 13:58                                   ` Martin Wilck

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