OCFS2 mounted.ocfs2 returns 'Unknown: Bad magic number in inode'
Last updated on JUNE 22, 2017
Applies to:Linux OS - Version Oracle Linux 4.4 and later
Linux ItaniumLinux x86-64
Oracle Cluster File System Version 2 (OCFS2) 1.x
When running OCFS2 mounted.ocfs2(8) command to check which cluster nodes have OCFS2 volumes mounted, message 'Unknown: Bad magic number in inode' is returned for one one or more devices. Repartitioning (fdisk(8)) or reformatting (mkfs.ocfs2(8)) the device(s) fail to suppress the message.
[root@anubis ~]# mounted.ocfs2 -f Device FS Nodes /dev/sdc ocfs2 Unknown: Bad magic number in inode /dev/sdc1 ocfs2 arachnid.au.oracle.com, anubis.au.oracle.com /dev/sdd1 ocfs2 arachnid.au.oracle.com, anubis.au.oracle.com [root@anubis ~]# mounted.ocfs2 -d Device FS UUID Label /dev/sdc ocfs2 c9b56493-efb0-4016-9e77-03df29c5b90a orahome /dev/sdc1 ocfs2 2f0bf126-94db-4384-9fd4-9cc03d784ef3 orahome /dev/sdd1 ocfs2 2823dc87-f60d-4d8f-b281-c3c73eb35265 oradata
The device(s) for which the message is observed, was originally an unpartitioned disk, upon which an OCFS2 filesystem had once been created. The device(s) were subsequently partitioned (whether with or without an OCFS2 filesystem having been created on one or more of the it's partitions).
In the example above, an OCFS2 filesystem was originally created on unpartitioned device /dev/sdc - it was later partitioned and an OCFS2 filesystem created on partition one, /dev/sdc1.
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