LVM "warning failed to connect to lvmetad"

警告无法连接到lvmetad

在服务器安装完毕之后进行分区时输入一些分区命令出现警告

[root@localhost ~]# pvs
  WARNING: lvmetad connection failed, cannot reconnect.
  lvmetad cannot be used due to error: Connection reset by peer
  WARNING: To avoid corruption, restart lvmetad (or disable with use_lvmetad=0).
  WARNING: Not using lvmetad because cache update failed.
  PV         VG     Fmt  Attr PSize  PFree
  /dev/vda2  centos lvm2 a--  <9.00g    0 

如果报warning failed to connect to lvmetad，falling back to device scanning.错误
简单的方法是编辑/etc/lvm/lvm.conf这个文件，找到use_lvmetad = 1将1修改为0保存，并重新配置grub。

[root@localhost ~]# vim /etc/lvm/lvm.conf
# use_lvmetad = 1
use_lvmetad = 0
[root@localhost ~]# grub2-mkconfig -o /boot/grub2/grub.cfg
Generating grub configuration file ...
  WARNING: Not using lvmetad because config setting use_lvmetad=0.
  WARNING: To avoid corruption, rescan devices to make changes visible (pvscan --cache).
  WARNING: Not using lvmetad because config setting use_lvmetad=0.
  WARNING: To avoid corruption, rescan devices to make changes visible (pvscan --cache).
Found linux image: /boot/vmlinuz-3.10.0-957.el7.x86_64
Found initrd image: /boot/initramfs-3.10.0-957.el7.x86_64.img
Found linux image: /boot/vmlinuz-0-rescue-5d774105f5c14a2f9b1f3a278302c50e
Found initrd image: /boot/initramfs-0-rescue-5d774105f5c14a2f9b1f3a278302c50e.img
  WARNING: Not using lvmetad because config setting use_lvmetad=0.
  WARNING: To avoid corruption, rescan devices to make changes visible (pvscan --cache).
  WARNING: Not using lvmetad because config setting use_lvmetad=0.
  WARNING: To avoid corruption, rescan devices to make changes visible (pvscan --cache).
done

最后重启系统

[root@localhost ~]# reboot