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Re: [Qemu-devel] [PATCH v4 for 2.12 0/3] fix bitmaps migration through s
From: |
Max Reitz |
Subject: |
Re: [Qemu-devel] [PATCH v4 for 2.12 0/3] fix bitmaps migration through shared storage |
Date: |
Mon, 26 Mar 2018 20:06:54 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 |
On 2018-03-20 18:05, Vladimir Sementsov-Ogievskiy wrote:
> Hi all.
>
> This fixes bitmaps migration through shared storage. Look at 02 for
> details.
>
> The bug introduced in 2.10 with the whole qcow2 bitmaps feature, so
> qemu-stable in CC. However I doubt that someone really suffered from this.
>
> Do we need dirty bitmaps at all in inactive case? - that was a question in v2.
> And, keeping in mind that we are going to use inactive mode not only for
> incoming migration, I'm not sure that answer is NO (but, it may be "NO" for
> 2.10, 2.11), so let's fix it in proposed here manner at least for 2.12.
For some reason, I can't get 169 to work now at all[1]. What's more,
whenever I run it, two (on current master, maybe more after this series)
"cat $TEST_DIR/mig_file" processes stay around. That doesn't seem right.
However, this series doesn't seem to make it worse[2]... So I'm keeping
it. I suppose it's just some issue with the test.
Max
[1] Sometimes there are migration even timeouts, sometimes just VM
launch timeouts (specifically when VM B is supposed to be re-launched
just after it has been shut down), and sometimes I get a dirty bitmap
hash mismatch.
[2] The whole timeline was:
- Apply this series, everything seems alright
(a couple of hours later)
- Test some other things, stumble over 169 once or so
- Focus on 169, fails a bit more often
(today)
- Can't get it to work at all
- Can't get it to work in any version, neither before nor after this patch
- Lose my sanity
- Write this email
O:-)
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- [Qemu-devel] [PATCH v4 for 2.12 0/3] fix bitmaps migration through shared storage, Vladimir Sementsov-Ogievskiy, 2018/03/20
- [Qemu-devel] [PATCH v4 2/3] qcow2: handle reopening bitmaps on bdrv_invalidate_cache, Vladimir Sementsov-Ogievskiy, 2018/03/20
- [Qemu-devel] [PATCH v4 1/3] qcow2-bitmap: add qcow2_reopen_bitmaps_rw_hint(), Vladimir Sementsov-Ogievskiy, 2018/03/20
- [Qemu-devel] [PATCH v4 3/3] iotests: enable shared migration cases in 169, Vladimir Sementsov-Ogievskiy, 2018/03/20
- [Qemu-devel] [PATCH v4 2/3] qcow2: fix bitmaps loading when bitmaps already exist, Vladimir Sementsov-Ogievskiy, 2018/03/20
- Re: [Qemu-devel] [PATCH v4 for 2.12 0/3] fix bitmaps migration through shared storage, Max Reitz, 2018/03/21
- Re: [Qemu-devel] [PATCH v4 for 2.12 0/3] fix bitmaps migration through shared storage,
Max Reitz <=
- Re: [Qemu-devel] [PATCH v4 for 2.12 0/3] fix bitmaps migration through shared storage, Vladimir Sementsov-Ogievskiy, 2018/03/27
- Re: [Qemu-devel] [PATCH v4 for 2.12 0/3] fix bitmaps migration through shared storage, Vladimir Sementsov-Ogievskiy, 2018/03/27
- Re: [Qemu-devel] [PATCH v4 for 2.12 0/3] fix bitmaps migration through shared storage, Vladimir Sementsov-Ogievskiy, 2018/03/27
- Re: [Qemu-devel] [PATCH v4 for 2.12 0/3] fix bitmaps migration through shared storage, Max Reitz, 2018/03/28
- Re: [Qemu-devel] [PATCH v4 for 2.12 0/3] fix bitmaps migration through shared storage, Vladimir Sementsov-Ogievskiy, 2018/03/29
- Re: [Qemu-devel] [PATCH v4 for 2.12 0/3] fix bitmaps migration through shared storage, Max Reitz, 2018/03/29
- Re: [Qemu-devel] [PATCH v4 for 2.12 0/3] fix bitmaps migration through shared storage, Vladimir Sementsov-Ogievskiy, 2018/03/29
- Re: [Qemu-devel] [PATCH v4 for 2.12 0/3] fix bitmaps migration through shared storage, Vladimir Sementsov-Ogievskiy, 2018/03/30
- Re: [Qemu-devel] [PATCH v4 for 2.12 0/3] fix bitmaps migration through shared storage, Vladimir Sementsov-Ogievskiy, 2018/03/30