From: David Teigland <teigland@redhat.com>
To: Gang He <ghe@suse.com>
Cc: "linux-lvm@redhat.com" <linux-lvm@redhat.com>
Subject: Re: [linux-lvm] About online pvmove/lvresize on shared VG
Date: Thu, 9 Jul 2020 12:01:28 -0500 [thread overview]
Message-ID: <20200709170128.GB9029@redhat.com> (raw)
In-Reply-To: <f699b25f-4962-4b47-b0ab-9ab5c944a032@suse.com>
On Thu, Jul 09, 2020 at 08:44:23AM +0800, Gang He wrote:
> > pvmove is implemented with mirroring, so that mirroring would need to be
> > replaced with something that works with concurrent access, e.g. cluster md
> > raid1. I suspect there are better approaches than pvmove to solve the
> > broader problem.
> Sorry, I am a little confused.
> In the future, we can do online pvmove when VG is activated in shared mode?
I think it's unlikely, but possible if someone has interest. I'd first
encourage them to think about new ways to solve the problem.
> from man page, I feel these limitations are temporary (or Not Yet Complete).
wording should probably change
> By the way, --lockopt option can help this situation? I cannot find the
> detailed description for this option in manpage.
No, lockopt is for some one-off special cases where we might need to work
around ordinary behaviors (like --nolocking.) There's no workaround to
the problem that dm-mirror doesn't work under a shared LV.
Dave
prev parent reply other threads:[~2020-07-09 17:01 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-08 3:55 Gang He
2020-07-08 16:05 ` David Teigland
2020-07-09 0:44 ` Gang He
2020-07-09 17:01 ` David Teigland [this message]
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