GFS2: Add "-o errors=panic|withdraw" mount options
This patch adds "-o errors=panic" and "-o errors=withdraw" to the gfs2 mount options. The "errors=withdraw" option is today's current behaviour, meaning to withdraw from the file system if a non-serious gfs2 error occurs. The new "errors=panic" option tells gfs2 to force a kernel panic if a non-serious gfs2 file system error occurs. This may be useful, for example, where fabric-level fencing is used that has no way to reboot (such as fence_scsi). Signed-off-by: NBob Peterson <rpeterso@redhat.com> Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>
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