From: Wei Liu <wei.liu2@citrix.com>
To: Steven Haigh <netwiz@crc.id.au>
Cc: "Roger Pau Monné" <roger.pau@citrix.com>,
"Wei Liu" <wei.liu2@citrix.com>,
xen-devel@lists.xen.org
Subject: Re: [PATCH] v3 - Add exclusive locking option to block-iscsi
Date: Thu, 12 May 2016 12:02:32 +0100 [thread overview]
Message-ID: <20160512110232.GJ27070@citrix.com> (raw)
In-Reply-To: <f854a325cfc48af3957fc4eae3018b5e@crc.id.au>
Hi Steven
On Mon, May 09, 2016 at 02:22:48PM +1000, Steven Haigh wrote:
> On 2016-05-05 15:52, Steven Haigh wrote:
> >On 2016-05-05 12:32, Steven Haigh wrote:
> >>Overview
> >>
> >>If you're using iSCSI, you can mount a target by multiple Dom0
> >>machines on the same target. For non-cluster aware filesystems, this
> >>can lead to disk corruption and general bad times by all. The iSCSI
> >>protocol allows the use of persistent reservations as per the SCSI
> >>disk spec. Low level SCSI commands for locking are handled by the
> >>sg_persist program (bundled with sg3_utils package in EL).
> >>
> >>The aim of this patch is to create a 'locktarget=y' option specified
> >>within the disk 'target' command for iSCSI to lock the target in
> >>exclusive mode on VM start with a key generated from the local systems
> >>IP, and release this lock on the shutdown of the DomU.
> >>
> >>Example Config:
> >>disk =
> >>['script=block-iscsi,vdev=xvda,target=iqn=iqn.1986-03.com.sun:02:mytarget,portal=iscsi.example.com,locktarget=y']
You seem to suggest an extension (locktarget) to disk spec as well but
you patch doesn't contain modification to
docs/txt/misc/xl-disk-configuration.txt.
Wei.
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel
next prev parent reply other threads:[~2016-05-12 11:02 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-05 2:32 [PATCH] v1 - Add exclusive locking option to block-iscsi Steven Haigh
2016-05-05 5:52 ` [PATCH] v2 " Steven Haigh
2016-05-06 9:09 ` Roger Pau Monné
2016-05-06 9:44 ` Steven Haigh
2016-05-09 4:22 ` [PATCH] v3 " Steven Haigh
2016-05-12 11:02 ` Wei Liu [this message]
2016-05-16 0:42 ` Steven Haigh
2016-05-19 1:29 ` Resend: " Steven Haigh
2016-05-19 12:10 ` Wei Liu
2016-05-19 14:23 ` Roger Pau Monné
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=20160512110232.GJ27070@citrix.com \
--to=wei.liu2@citrix.com \
--cc=netwiz@crc.id.au \
--cc=roger.pau@citrix.com \
--cc=xen-devel@lists.xen.org \
/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).