磁盘满了，由于使用的是lvm，想要扩容时发现无论lvs还是lvdisplay这类命令都会报同样的错：
[root@localhost qwang]# lvs Parse error at byte (line ): unexpected token Error parsing metadata for VG fedora. Skipping volume group fedora Internal error: Volume Group fedora was not unlocked
各种搜索无果，翻出一个bug：https://bugzilla.redhat.com/show_bug.cgi?id=1119045
读到comment 30，试试
[root@localhost qwang]# uname -a Linux localhost.localdomain 54.197.182.68 jbossas.alias.medium 3.17.-.fc20.x86_64 # SMP Fri Nov :: UTC x86_64 x86_64 x86_64 GNU/Linux
查看下hostname
[root@localhost qwang]# cat /etc/hostname localhost.localdomain 54.197.182.68 jbossas.alias.medium
/etc/hostname里删去我自己加的一行54.197.182.68 jbossas.alias.medium
再查看下
[root@localhost qwang]# uname -a Linux localhost.localdomain 3.17.-.fc20.x86_64 # SMP Fri Nov :: UTC x86_64 x86_64 x86_64 GNU/Linux
试试
[root@localhost qwang]# lvs LV VG Attr LSize Pool Origin Data% Move Log Cpy%Sync Convert home fedora -wi-ao---- .34g root fedora -wi-ao---- .00g swap fedora -wi-ao---- .64g
问题解决！
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