[openEuelr-1.0-LTS] 服务器多个nvme时，存在盘符漂移问题 · Issue #I5986O · openEuler/kernel - Gitee.com

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缺陷

创建于

2022-05-25 16:51

【标题描述】
服务器存在多个nvme盘时，重启后存在nvme盘符漂移现象。

【问题复现步骤】
机器重启或者卸载nvme模块再加载

【附件信息】

输入图片说明

创建了缺陷

Hi chentt10, welcome to the openEuler Community.
I'm the Bot here serving you. You can find the instructions on how to interact with me at Here.
If you have any questions, please contact the SIG: Kernel, and any of the maintainers: @YangYingliang , @pi3orama , @成坚 (CHENG Jian) , @jiaoff , @zhengzengkai , @Qiuuuuu , @刘勇强 , @Xie XiuQi

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修改了描述

原值

<!-- #请根据issue的类型在标题右侧下拉框中选择对应的选项（需求、缺陷或CVE等）-->

<!-- #请根据issue相关的版本在里程碑中选择对应的节点，若是与版本无关，请选择“不关联里程碑”-->

【标题描述】

服务器存在多个nvme盘时，重启后存在nvme盘符漂移现象。

【问题复现步骤】

机器重启或者卸载nvme模块再加载 

【附件信息】

```bash[root@localhost block]# rmmod nvme &&modprobe nvme

[root@localhost block]# ll

总用量 0

lrwxrwxrwx. 1 root root 0  5月 26 00:27 dm-0 -> ../devices/virtual/block/dm-0

lrwxrwxrwx. 1 root root 0  5月 26 00:27 dm-1 -> ../devices/virtual/block/dm-1

lrwxrwxrwx. 1 root root 0  5月 26 00:28 dm-2 -> ../devices/virtual/block/dm-2

lrwxrwxrwx. 1 root root 0  5月 26 00:37 nvme0n1 -> ../devices/pci0000:00/0000:00:15.0/0000:03:00.0/nvme/nvme0/nvme0n1

lrwxrwxrwx. 1 root root 0  5月 26 00:37 nvme1n1 -> ../devices/pci0000:00/0000:00:16.0/0000:0b:00.0/nvme/nvme1/nvme1n1

lrwxrwxrwx. 1 root root 0  5月 26 00:37 nvme2n1 -> ../devices/pci0000:00/0000:00:17.0/0000:13:00.0/nvme/nvme2/nvme2n1

lrwxrwxrwx. 1 root root 0  5月 26 00:37 nvme3n1 -> ../devices/pci0000:00/0000:00:18.0/0000:1b:00.0/nvme/nvme3/nvme3n1

lrwxrwxrwx. 1 root root 0  5月 26 00:27 sda -> ../devices/pci0000:00/0000:00:10.0/host2/target2:0:0/2:0:0:0/block/sda

lrwxrwxrwx. 1 root root 0  5月 26 00:28 sr0 -> ../devices/pci0000:00/0000:00:07.1/ata2/host1/target1:0:0/1:0:0:0/block/sr0

[root@localhost block]# rmmod nvme &&modprobe nvme

[root@localhost block]# ll

总用量 0

lrwxrwxrwx. 1 root root 0  5月 26 00:27 dm-0 -> ../devices/virtual/block/dm-0

lrwxrwxrwx. 1 root root 0  5月 26 00:27 dm-1 -> ../devices/virtual/block/dm-1

lrwxrwxrwx. 1 root root 0  5月 26 00:28 dm-2 -> ../devices/virtual/block/dm-2

lrwxrwxrwx. 1 root root 0  5月 26 00:37 nvme0n1 -> ../devices/pci0000:00/0000:00:15.0/0000:03:00.0/nvme/nvme0/nvme0n1

lrwxrwxrwx. 1 root root 0  5月 26 00:37 nvme1n1 -> ../devices/pci0000:00/0000:00:16.0/0000:0b:00.0/nvme/nvme1/nvme1n1

lrwxrwxrwx. 1 root root 0  5月 26 00:37 nvme2n1 -> ../devices/pci0000:00/0000:00:18.0/0000:1b:00.0/nvme/nvme3/nvme2n1

lrwxrwxrwx. 1 root root 0  5月 26 00:37 nvme3n1 -> ../devices/pci0000:00/0000:00:17.0/0000:13:00.0/nvme/nvme2/nvme3n1

lrwxrwxrwx. 1 root root 0  5月 26 00:27 sda -> ../devices/pci0000:00/0000:00:10.0/host2/target2:0:0/2:0:0:0/block/sda

lrwxrwxrwx. 1 root root 0  5月 26 00:28 sr0 -> ../devices/pci0000:00/0000:00:07.1/ata2/host1/target1:0:0/1:0:0:0/block/sr0

[root@localhost block]# pwd

/sys/block

[root@localhost block]# ^C

```

新值

<!-- #请根据issue的类型在标题右侧下拉框中选择对应的选项（需求、缺陷或CVE等）-->

<!-- #请根据issue相关的版本在里程碑中选择对应的节点，若是与版本无关，请选择“不关联里程碑”-->

【标题描述】

服务器存在多个nvme盘时，重启后存在nvme盘符漂移现象。

【问题复现步骤】

机器重启或者卸载nvme模块再加载 

【附件信息】

```bash[root@localhost block]# rmmod nvme &&modprobe nvme

[root@localhost block]# ll

总用量 0

lrwxrwxrwx. 1 root root 0  5月 26 00:27 dm-0 -> ../devices/virtual/block/dm-0

lrwxrwxrwx. 1 root root 0  5月 26 00:27 dm-1 -> ../devices/virtual/block/dm-1

lrwxrwxrwx. 1 root root 0  5月 26 00:28 dm-2 -> ../devices/virtual/block/dm-2

lrwxrwxrwx. 1 root root 0  5月 26 00:37 nvme0n1 -> ../devices/pci0000:00/0000:00:15.0/0000:03:00.0/nvme/nvme0/nvme0n1

lrwxrwxrwx. 1 root root 0  5月 26 00:37 nvme1n1 -> ../devices/pci0000:00/0000:00:16.0/0000:0b:00.0/nvme/nvme1/nvme1n1

lrwxrwxrwx. 1 root root 0  5月 26 00:37 nvme2n1 -> ../devices/pci0000:00/0000:00:17.0/0000:13:00.0/nvme/nvme2/nvme2n1

lrwxrwxrwx. 1 root root 0  5月 26 00:37 nvme3n1 -> ../devices/pci0000:00/0000:00:18.0/0000:1b:00.0/nvme/nvme3/nvme3n1

lrwxrwxrwx. 1 root root 0  5月 26 00:27 sda -> ../devices/pci0000:00/0000:00:10.0/host2/target2:0:0/2:0:0:0/block/sda

lrwxrwxrwx. 1 root root 0  5月 26 00:28 sr0 -> ../devices/pci0000:00/0000:00:07.1/ata2/host1/target1:0:0/1:0:0:0/block/sr0

[root@localhost block]# rmmod nvme &&modprobe nvme

[root@localhost block]# ll

总用量 0

lrwxrwxrwx. 1 root root 0  5月 26 00:27 dm-0 -> ../devices/virtual/block/dm-0

lrwxrwxrwx. 1 root root 0  5月 26 00:27 dm-1 -> ../devices/virtual/block/dm-1

lrwxrwxrwx. 1 root root 0  5月 26 00:28 dm-2 -> ../devices/virtual/block/dm-2

lrwxrwxrwx. 1 root root 0  5月 26 00:37 nvme0n1 -> ../devices/pci0000:00/0000:00:15.0/0000:03:00.0/nvme/nvme0/nvme0n1

lrwxrwxrwx. 1 root root 0  5月 26 00:37 nvme1n1 -> ../devices/pci0000:00/0000:00:16.0/0000:0b:00.0/nvme/nvme1/nvme1n1

lrwxrwxrwx. 1 root root 0  5月 26 00:37 nvme2n1 -> ../devices/pci0000:00/0000:00:18.0/0000:1b:00.0/nvme/nvme3/nvme2n1

lrwxrwxrwx. 1 root root 0  5月 26 00:37 nvme3n1 -> ../devices/pci0000:00/0000:00:17.0/0000:13:00.0/nvme/nvme2/nvme3n1

lrwxrwxrwx. 1 root root 0  5月 26 00:27 sda -> ../devices/pci0000:00/0000:00:10.0/host2/target2:0:0/2:0:0:0/block/sda

lrwxrwxrwx. 1 root root 0  5月 26 00:28 sr0 -> ../devices/pci0000:00/0000:00:07.1/ata2/host1/target1:0:0/1:0:0:0/block/sr0

[root@localhost block]# pwd

/sys/block

[root@localhost block]# 

```

修改了标题

关联了openEuler/kernel Pull Request !18

修改了描述

原值

<!-- #请根据issue的类型在标题右侧下拉框中选择对应的选项（需求、缺陷或CVE等）-->

<!-- #请根据issue相关的版本在里程碑中选择对应的节点，若是与版本无关，请选择“不关联里程碑”-->

【标题描述】

服务器存在多个nvme盘时，重启后存在nvme盘符漂移现象。

【问题复现步骤】

机器重启或者卸载nvme模块再加载 

【附件信息】

```bash[root@localhost block]# rmmod nvme &&modprobe nvme

[root@localhost block]# ll

总用量 0

lrwxrwxrwx. 1 root root 0  5月 26 00:27 dm-0 -> ../devices/virtual/block/dm-0

lrwxrwxrwx. 1 root root 0  5月 26 00:27 dm-1 -> ../devices/virtual/block/dm-1

lrwxrwxrwx. 1 root root 0  5月 26 00:28 dm-2 -> ../devices/virtual/block/dm-2

lrwxrwxrwx. 1 root root 0  5月 26 00:37 nvme0n1 -> ../devices/pci0000:00/0000:00:15.0/0000:03:00.0/nvme/nvme0/nvme0n1

lrwxrwxrwx. 1 root root 0  5月 26 00:37 nvme1n1 -> ../devices/pci0000:00/0000:00:16.0/0000:0b:00.0/nvme/nvme1/nvme1n1

lrwxrwxrwx. 1 root root 0  5月 26 00:37 nvme2n1 -> ../devices/pci0000:00/0000:00:17.0/0000:13:00.0/nvme/nvme2/nvme2n1

lrwxrwxrwx. 1 root root 0  5月 26 00:37 nvme3n1 -> ../devices/pci0000:00/0000:00:18.0/0000:1b:00.0/nvme/nvme3/nvme3n1

lrwxrwxrwx. 1 root root 0  5月 26 00:27 sda -> ../devices/pci0000:00/0000:00:10.0/host2/target2:0:0/2:0:0:0/block/sda

lrwxrwxrwx. 1 root root 0  5月 26 00:28 sr0 -> ../devices/pci0000:00/0000:00:07.1/ata2/host1/target1:0:0/1:0:0:0/block/sr0

[root@localhost block]# rmmod nvme &&modprobe nvme

[root@localhost block]# ll

总用量 0

lrwxrwxrwx. 1 root root 0  5月 26 00:27 dm-0 -> ../devices/virtual/block/dm-0

lrwxrwxrwx. 1 root root 0  5月 26 00:27 dm-1 -> ../devices/virtual/block/dm-1

lrwxrwxrwx. 1 root root 0  5月 26 00:28 dm-2 -> ../devices/virtual/block/dm-2

lrwxrwxrwx. 1 root root 0  5月 26 00:37 nvme0n1 -> ../devices/pci0000:00/0000:00:15.0/0000:03:00.0/nvme/nvme0/nvme0n1

lrwxrwxrwx. 1 root root 0  5月 26 00:37 nvme1n1 -> ../devices/pci0000:00/0000:00:16.0/0000:0b:00.0/nvme/nvme1/nvme1n1

lrwxrwxrwx. 1 root root 0  5月 26 00:37 nvme2n1 -> ../devices/pci0000:00/0000:00:18.0/0000:1b:00.0/nvme/nvme3/nvme2n1

lrwxrwxrwx. 1 root root 0  5月 26 00:37 nvme3n1 -> ../devices/pci0000:00/0000:00:17.0/0000:13:00.0/nvme/nvme2/nvme3n1

lrwxrwxrwx. 1 root root 0  5月 26 00:27 sda -> ../devices/pci0000:00/0000:00:10.0/host2/target2:0:0/2:0:0:0/block/sda

lrwxrwxrwx. 1 root root 0  5月 26 00:28 sr0 -> ../devices/pci0000:00/0000:00:07.1/ata2/host1/target1:0:0/1:0:0:0/block/sr0

[root@localhost block]# pwd

/sys/block

[root@localhost block]# 

```

新值

<!-- #请根据issue的类型在标题右侧下拉框中选择对应的选项（需求、缺陷或CVE等）-->

<!-- #请根据issue相关的版本在里程碑中选择对应的节点，若是与版本无关，请选择“不关联里程碑”-->

【标题描述】

服务器存在多个nvme盘时，重启后存在nvme盘符漂移现象。

【问题复现步骤】

机器重启或者卸载nvme模块再加载 

【附件信息】

![输入图片说明](https://images.gitee.com/uploads/images/2022/0615/141148_c0bd35b3_11033437.png "屏幕截图.png")

我发现一个类似的问题，但不是nvme的，可以参考下：
https://github.com/torvalds/linux/commit/ef0ff68351be4fd83bec2d797f0efdc0174a55a4#diff-c12b92d8d5635cf9fa32a1a090c52c954b994d5f2f304e1879070e29d7cdae6f
异步并行执行导致了乱序

关联了openEuler/kernel Pull Request !139

通过openeuler/kernel Pull Request !139 将任务状态从 待办的 修改为已完成

关联了src-openEuler/kernel Pull Request !781

关联了src-openEuler/kernel Pull Request !780

麒麟V10SP2也存在这个问题

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