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[Qemu-block] [PATCH v3 0/4] block: fix 'savevm' hang with -object iothre
From: |
Stefan Hajnoczi |
Subject: |
[Qemu-block] [PATCH v3 0/4] block: fix 'savevm' hang with -object iothread |
Date: |
Mon, 22 May 2017 14:57:00 +0100 |
v3:
* Add missing bdrv_drain_all_end() in error code paths [Kevin]
v2:
* New patch to use bdrv_drain_all_begin/end() in savevm/loadvm [Kevin]
(All other patches unchanged)
The 'savevm' command hangs when -object iothread is used. See patches for
details, but basically the vmstate read/write code didn't conform to the latest
block layer locking rules.
Stefan Hajnoczi (4):
block: count bdrv_co_rw_vmstate() requests
block: use BDRV_POLL_WHILE() in bdrv_rw_vmstate()
migration: avoid recursive AioContext locking in save_vmstate()
migration: use bdrv_drain_all_begin/end() instead bdrv_drain_all()
block/io.c | 21 +++++++++++++--------
migration/savevm.c | 30 ++++++++++++++++++++++++++----
2 files changed, 39 insertions(+), 12 deletions(-)
--
2.9.3
- [Qemu-block] [PATCH v3 0/4] block: fix 'savevm' hang with -object iothread,
Stefan Hajnoczi <=
- [Qemu-block] [PATCH v3 1/4] block: count bdrv_co_rw_vmstate() requests, Stefan Hajnoczi, 2017/05/22
- [Qemu-block] [PATCH v3 2/4] block: use BDRV_POLL_WHILE() in bdrv_rw_vmstate(), Stefan Hajnoczi, 2017/05/22
- [Qemu-block] [PATCH v3 3/4] migration: avoid recursive AioContext locking in save_vmstate(), Stefan Hajnoczi, 2017/05/22
- [Qemu-block] [PATCH v3 4/4] migration: use bdrv_drain_all_begin/end() instead bdrv_drain_all(), Stefan Hajnoczi, 2017/05/22
- Re: [Qemu-block] [PATCH v3 0/4] block: fix 'savevm' hang with -object iothread, Stefan Hajnoczi, 2017/05/30