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From: Julien Grall <julien@xen.org>
To: xen-devel@lists.xenproject.org
Cc: raphning@amazon.co.uk, doebel@amazon.de,
	Julien Grall <jgrall@amazon.com>,
	Andrew Cooper <andrew.cooper3@citrix.com>,
	George Dunlap <george.dunlap@citrix.com>,
	Ian Jackson <iwj@xenproject.org>, Jan Beulich <jbeulich@suse.com>,
	Julien Grall <julien@xen.org>,
	Stefano Stabellini <sstabellini@kernel.org>, Wei Liu <wl@xen.org>,
	Juergen Gross <jgross@suse.com>
Subject: [PATCH 00/10] tools/xenstored: Bug fixes + Improve Live-Update
Date: Wed, 16 Jun 2021 15:43:14 +0100	[thread overview]
Message-ID: <20210616144324.31652-1-julien@xen.org> (raw)

From: Julien Grall <jgrall@amazon.com>

Hi all,

At the moment, Live-Update will, by default, not proceed if there are
in-flight transactions. It is possible force it by passing -F but this
will break any connection with in-flight transactions.

There are PV drivers out that may never terminate some transaction. On
host running such guest, we would need to use -F. Unfortunately, this
also risks to break well-behaving guests (and even dom0) because
Live-Update will happen as soon as the timeout is hit.

This series aims to allow to Live-Update more safely even when the option
-F is used.

The first part of the series contains a few fixes for bug found while
testing Live-Update.

Cheers,

Julien Grall (10):
  MAINTAINERS: Add myself as reviewers for tools/xenstore
  tools/xenstored: Introduce lu_get_connection() and use it
  tools/xenstore: Don't assume conn->in points to the LU request
  tools/xenstored: Limit the number of requests a connection can delay
  tools/xenstored: xenstored_core.h should include fcntl.h
  tools/xenstored: Introduce a wrapper for conn->funcs->can_{read,
    write}
  tools/xenstored: delay_request: don't assume conn->in == in
  tools/xenstored: Extend restore code to handle multiple input buffer
  tools/xenstored: Dump delayed requests
  tools/xenstored: Delay new transaction while Live-Update is pending

 MAINTAINERS                        |   1 +
 tools/xenstore/xenstored_control.c |  66 +++++++++-
 tools/xenstore/xenstored_control.h |   7 ++
 tools/xenstore/xenstored_core.c    | 196 +++++++++++++++++++++++------
 tools/xenstore/xenstored_core.h    |   8 +-
 tools/xenstore/xenstored_domain.c  |  46 +++----
 tools/xenstore/xenstored_domain.h  |   6 +-
 7 files changed, 255 insertions(+), 75 deletions(-)

-- 
2.17.1



             reply	other threads:[~2021-06-16 14:43 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-16 14:43 Julien Grall [this message]
2021-06-16 14:43 ` [PATCH 01/10] MAINTAINERS: Add myself as reviewers for tools/xenstore Julien Grall
2021-06-16 15:15   ` Juergen Gross
2021-06-16 14:43 ` [PATCH 02/10] tools/xenstored: Introduce lu_get_connection() and use it Julien Grall
2021-06-21  8:21   ` Luca Fancellu
2021-06-24  7:21   ` Juergen Gross
2021-06-16 14:43 ` [PATCH 03/10] tools/xenstore: Don't assume conn->in points to the LU request Julien Grall
2021-06-21  8:55   ` Luca Fancellu
2021-06-24  8:06     ` Julien Grall
2021-06-24  7:32   ` Juergen Gross
2021-06-24  7:34     ` Juergen Gross
2021-06-24  7:56       ` Luca Fancellu
2021-06-24  8:05         ` Juergen Gross
2021-06-16 14:43 ` [PATCH 04/10] tools/xenstored: Limit the number of requests a connection can delay Julien Grall
2021-06-21  9:02   ` Luca Fancellu
2021-06-24  7:35   ` Juergen Gross
2021-06-16 14:43 ` [PATCH 05/10] tools/xenstored: xenstored_core.h should include fcntl.h Julien Grall
2021-06-21  9:03   ` Luca Fancellu
2021-06-24  7:36   ` Juergen Gross
2021-06-16 14:43 ` [PATCH 06/10] tools/xenstored: Introduce a wrapper for conn->funcs->can_{read, write} Julien Grall
2021-06-21  9:10   ` Luca Fancellu
2021-06-24  7:39   ` Juergen Gross
2021-06-16 14:43 ` [PATCH 07/10] tools/xenstored: delay_request: don't assume conn->in == in Julien Grall
2021-06-21  9:12   ` Luca Fancellu
2021-06-24  7:44   ` Juergen Gross
2021-06-24  7:58     ` Julien Grall
2021-06-16 14:43 ` [PATCH 08/10] tools/xenstored: Extend restore code to handle multiple input buffer Julien Grall
2021-06-21  9:21   ` Luca Fancellu
2021-06-24  8:30   ` Juergen Gross
2021-06-24  8:42     ` Julien Grall
2021-06-24  9:20       ` Juergen Gross
2021-06-16 14:43 ` [PATCH 09/10] tools/xenstored: Dump delayed requests Julien Grall
2021-06-21  9:27   ` Luca Fancellu
2021-06-24  8:41   ` Juergen Gross
2021-06-24 10:28     ` Julien Grall
2021-06-24 10:45       ` Juergen Gross
2021-06-24 10:46         ` Julien Grall
2021-06-24 11:02           ` Juergen Gross
2021-06-24 11:17             ` Julien Grall
2021-06-16 14:43 ` [PATCH 10/10] tools/xenstored: Delay new transaction while Live-Update is pending Julien Grall
2021-06-21  9:30   ` Luca Fancellu
2021-06-24  9:23   ` Juergen Gross
2021-06-24 10:43 ` [PATCH 00/10] tools/xenstored: Bug fixes + Improve Live-Update Julien Grall

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