| Message ID | 20210616144324.31652-1-julien@xen.org (mailing list archive) |
|---|---|
| Headers | show |
| Series | tools/xenstored: Bug fixes + Improve Live-Update | expand |
Hi, On 16/06/2021 16:43, Julien Grall wrote: > 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 I have committed the first 8 patches. > tools/xenstored: Dump delayed requests > tools/xenstored: Delay new transaction while Live-Update is pending Cheers,
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(-)