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[PATCH 00/11] block: Add retry for werror=/rerror= mechanism
by Jiahui Cen 21 Jan '21

21 Jan '21

A VM in the cloud environment may use a virutal disk as the backend storage, and there are usually filesystems on the virtual block device. When backend storage is temporarily down, any I/O issued to the virtual block device will cause an error. For example, an error occurred in ext4 filesystem would make the filesystem readonly. In production environment, a cloud backend storage can be soon recovered. For example, an IP-SAN may be down due to network failure and will be online soon after network is recovered. However, the error in the filesystem may not be recovered unless a device reattach or system restart. Thus an I/O retry mechanism is in need to implement a self-healing system. This patch series propose to extend the werror=/rerror= mechanism to add a 'retry' feature. It can automatically retry failed I/O requests on error without sending error back to guest, and guest can get back running smoothly when I/O is recovred. Jiahui Cen (9): qapi/block-core: Add retry option for error action block-backend: Introduce retry timer block-backend: Add device specific retry callback block-backend: Enable retry action on errors block-backend: Add timeout support for retry block: Add error retry param setting virtio_blk: Add support for retry on errors scsi-bus: Refactor the code that retries requests scsi-disk: Add support for retry on errors Sergio Lopez (2): virtio-blk: Refactor the code that processes queued requests virtio-blk: On restart, process queued requests in the proper context block/block-backend.c | 66 ++++++++++++++++++++ blockdev.c | 52 +++++++++++++++ hw/block/block.c | 10 +++ hw/block/dataplane/virtio-blk.c | 8 +++ hw/block/virtio-blk.c | 51 +++++++++++---- hw/scsi/scsi-bus.c | 16 +++-- hw/scsi/scsi-disk.c | 16 +++++ include/hw/block/block.h | 7 ++- include/hw/scsi/scsi.h | 1 + include/hw/virtio/virtio-blk.h | 1 + include/sysemu/block-backend.h | 10 +++ qapi/block-core.json | 4 +- 12 files changed, 222 insertions(+), 20 deletions(-) -- 2.30.0

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StratoVirt将main_loop.rs移到machine_manager模块和在json文件解析中支持内存大小单位(M, m, G, g)
by Xufei (VF) 18 Jan '21

18 Jan '21

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FW: [会议纪要]---20210108//RE: virt sig meeting
by Chenzhendong (alex) 12 Jan '21

12 Jan '21

From: Chenzhendong (alex) Sent: Monday, January 11, 2021 4:45 PM To: dev(a)openeuler.org; 'tc(a)openeuler.org' <tc(a)openeuler.org> Cc: Fanliang (EulerOS) <fanliang(a)huawei.com> Subject: [会议纪要]---20210108//RE: [Virt] virt sig meeting openEuler Virt SIG 20210108 一、会议纪要： 1、特性开发进展： openEuler 20.03 LTS SP1 已经正式发布。 openEuler 21.03： a) Qemu+kvm：热迁移pro，提升热迁移性能和安全，已经合入qemu主干，已经回合至openeuler；vmtop支持X86 5.10 完成80%，内核patch和用户态patch都已整理完成，内核代码完成检视，待合入内核；用户态已经发起PR检视中。 b) Risc-v：支持热迁移；支持vhost的ioeventfd方案，代码已经合入riscv分支； c) StratoVirt： i. 轻量级虚拟化：支持内存弹性，代码已经合入；支持arm和X86，代码已经合入； iii. 性能优化：支持iothread，已经完成开发，完成代码合入； iv. 安全优化：支持sechoop启动，代码开发完成100%；namespace隔离完成代码开发和自验证，代码完成检视待合入。 2、EulerRobot进展： EulerRobot已经完成静态扫描、编译检查、qemu-ut、avocado-vt、ASAN等测试活动已对接，已经支持upstream qemu及openEuler LTS dailyBuild等版本。当前CI平台在结果呈现及任务调度方法还存在一定问题，因而存在用例例执行时间偏长、测试结果不便于统一呈现及定位，后续需持续改进。 3、对spice协议的支持：麒麟软件的Leo Hou介绍了对spice协议和qxl显卡支持的背景，yorifang近期分析，spice协议比较复杂，对其支持的情况还需要后续进一步讨论。 4、arm上对热迁移COLO的支持：麒麟软件的Sebastian主要介绍了单机应用的HA场景需要使用COLO特性，因为之前错误的环境有问题，等环境好了在结合日志在分析下错误。我们也在arm环境上验证下COLO特性。二、遗留问题： 1.后续单独讨论对spice协议的支持。 2.virt sig 规划路标在virt sig主页呈现。 From: openEuler conference via Virt [mailto:virt@openeuler.org] Sent: Tuesday, January 5, 2021 10:31 AM To: virt(a)openeuler.org<mailto:virt@openeuler.org>; dev(a)openeuler.org<mailto:dev@openeuler.org> Subject: [Virt] virt sig meeting 您好！ openEuler Virt SIG 邀请您参加 2021-01-08 14:30 召开的ZOOM会议会议主题：virt sig meeting 会议链接：https://zoom.us/j/99362542527?pwd=dzU4UFMzaVdyZkg0QTB0Mk5nMjFpUT09 更多资讯尽在：https://openeuler.org/zh/ Hello! openEuler Virt SIG invites you to attend the ZOOM conference will be held at 2021-01-08 14:30, The subject of the conference is virt sig meeting, You can join the meeting at https://zoom.us/j/99362542527?pwd=dzU4UFMzaVdyZkg0QTB0Mk5nMjFpUT09. More information<https://openeuler.org/zh/>

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StratoVirt更新kvm-ioctl 0.6.0版本和将cmdline.rs移到machine_manager模块中
by Xufei (VF) 11 Jan '21

11 Jan '21

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openEuler libvirt编译问题
by joehuang 08 Jan '21

08 Jan '21

大家好，我在openEuler上编译libvirt，发现缺少依赖包。./configure 检查报错 you must install gnutls >= 3.2.0 . openEuler的里面已经有gnutls的release package，但是没有dev package，libvirt编译依赖的gnutls 的dev package。社区里面编译libvirt的时候，是怎么解决这个依赖包问题的，或者说哪里能找到配套的gnutls-dev package（x86），openEuler everything的iso 也没有这个gnutls的dev package。 Best Regards Chaoyi Huang (Joe Huang)

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virt sig meeting
by openEuler conference 05 Jan '21

05 Jan '21

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StratoVirt修正qmp引发的CPU过高的bug
by Xufei (VF) 04 Jan '21

04 Jan '21

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StratoVirt更新kvm-ioctl和kvm-bindings的版本和修正bug中断控制器初始化需放在Vcpu初始化之前
by Xufei (VF) 04 Jan '21

04 Jan '21

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openEuler开源一周年，感谢有你
by openEuler 31 Dec '20

31 Dec '20

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Re: 关于openEuler中qemu对spice的支持情况
by Alex Chen 28 Dec '20

28 Dec '20

@英乐您好， openEuler中qemu对spice的支持情况，当前已经安排人在分析。具体qemu4.1.0中aarch64版本不支持SPICE的原因等分析完，我们会发分析结果。使用spice的场景你们能否描述下？ PS：我们既然都是基于openEuler社区开发的，我建议后续有公共可公开的问题都抄送下virt@openeuler.org邮件列表。或者在openEuler社区上面提issue，然后在issue中讨论。谢谢。 On 2020/12/25 10:44, houyingle(a)kylinos.cn wrote: > 陈工您好， > 非常感谢您的支持！ > 关于openEuler中qemu对spice的支持情况，目前测试openEuler中aarch64版qemu4.1.0不支持spice， > 所以有两个问题需要跟您沟通一下： > 1、是出于什么原因aarch64版qemu4.1.0不支持spice？（x86版qemu4.1.0是支持spice的） > 2、openEuler中qemu对spice的支持是否已提上计划？（如有计划，是否可以提供一下大概时间计划安排？） > > ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ > > - - - - - - - - - - - - - - - - - - - - - - > > 侯英乐/Leo Hou > Mobile: +86-18698021400 > Email: houyingle(a)kylinos.cn

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