[英]OpenStack VM File System Error on reboot and nova rescue Cannot rescue a volume-backed instance (HTTP 400)
Openstack VM's File system went into read-only mode and rebooted it. Openstack VM 的文件系统进入只读模式并重新启动它。 After the reboot I'm getting grub menu and auto booting from the Kernel and seeing only blank screen in Openstck dashboard console.
重新启动后,我从内核获得 grub 菜单和自动启动,并且在 Openstck 仪表板控制台中只看到空白屏幕。
I tried nova rescue but failed with below error,我尝试了 nova 救援,但因以下错误而失败,
cannot be rescued: Cannot rescue a volume-backed instance (HTTP 400)
I did edited the grub and enetered single/rescue mode to fix the file system error but still I'm getting blank screen after ctrl+x
in grub edit.我确实编辑了 grub 并进入了单/救援模式以修复文件系统错误,但在 grub 编辑中按
ctrl+x
后仍然出现空白屏幕。 I want to bring up the vm instance and how do I fix the file system error.我想调出 vm 实例以及如何修复文件系统错误。
File system error happened as of vm's backend storage, ceph sds node's all went down as of power failure and restored back. vm 的后端存储发生文件系统错误,ceph sds 节点在电源故障时全部关闭并恢复。
I'm using RHOSP 13 and VM's image is RHEL 7.我使用的是 RHOSP 13,VM 的映像是 RHEL 7。
I did alternate way to get into rescue mode and fixed the file system error.我做了另一种方式进入救援模式并修复了文件系统错误。
virsh edit vmname
virsh 编辑虚拟机名称
nova reset-state --active instancename
nova 重置状态 --active 实例名
virsh start vmname
virsh 启动虚拟机名称
Troubleshooting故障排除
Rescue mode救援模式
continue to shell继续壳
vgscan -v vgscan -v
vgchange -ay vgchange -ay
lvscan扫描
e2fsck /dev/xxx or xfs_repair /dev/xxx e2fsck /dev/xxx 或 xfs_repair /dev/xxx
nova start instancename
nova 启动实例名
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