From: "Kirby Zhou" <kirbyzhou@sohu-rd.com>
To: 'LVM general discussion and development' <linux-lvm@redhat.com>
Subject: Re: [linux-lvm] Is there any help for external locking of LVM?
Date: Mon, 23 Aug 2010 23:59:53 +0800 [thread overview]
Message-ID: <00a201cb42dc$39f3fa00$addbee00$@com> (raw)
In-Reply-To: <4C727C5A.4010701@redhat.com>
Thanks, and could you please think about my second question.
> If I just put locking_dir on a NFS volume with locking_type=1, can I use
LVM
> to share a storage across machine?
I see that file_locking do not provide query_resource function, is it safe
for me to do pvmove with NFS based locking file? And what does
query_resource should do?
Regards
Kirby Zhou
-----Original Message-----
From: linux-lvm-bounces@redhat.com [mailto:linux-lvm-bounces@redhat.com] On
Behalf Of Christine Caulfield
Sent: Monday, August 23, 2010 9:49 PM
To: linux-lvm@redhat.com
Subject: Re: [linux-lvm] Is there any help for external locking of LVM?
Hiya
There's no documentation on writing locking plugins but it's fairly
straightforward, in principle at least ;-)
Have a look at LVM2/lib/locking/no_locking.c and add your custom locking
parts in there. You DO need to call the lvm libraries parts or nothing
will happen.
If your locking library is generally useful I hope you will share it
with the community.
Chrissie
On 23/08/10 05:17, Kirby Zhou wrote:
> I am working for getting a alternative of built-in clustered locking.
> clvmd cannot support large size cluster well, and cannot across VLAN.
> In my opinion, a centralized locking mechanism is more suitable for
> large-scale cluster.
>
> If I just put locking_dir on a NFS volume with locking_type=1, can I use
LVM
> to share a storage across machine?
> Or is there any document can guide me to write a new locking plug-in?
>
> Regards,
> Kirby Zhou
> from SOHU-RD +86-10-6272-8261
>
_______________________________________________
linux-lvm mailing list
linux-lvm@redhat.com
https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
prev parent reply other threads:[~2010-08-23 16:00 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-23 4:17 [linux-lvm] Is there any help for external locking of LVM? Kirby Zhou
2010-08-23 13:49 ` Christine Caulfield
2010-08-23 15:59 ` Kirby Zhou [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='00a201cb42dc$39f3fa00$addbee00$@com' \
--to=kirbyzhou@sohu-rd.com \
--cc=linux-lvm@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).