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    exofs: Add SYSFS info for autologin/pNFS export · 8b56a30c
    Sachin Bhamare 提交于
    Introduce sysfs infrastructure for exofs cluster filesystem.
    
    Each OSD target shows up as below in the sysfs hierarchy:
    	/sys/fs/exofs/<osdname>_<partition_id>/devX
    
    Where <osdname>_<partition_id> is the unique identification
    of a Superblock.
    
    Where devX: 0 <= X < device_table_size. They are ordered
    in device-table order as specified to the mkfs.exofs command
    
    Each OSD device  devX has following attributes :
    	osdname - ReadOnly
    	systemid - ReadOnly
    	uri - Read/Write
    
    It is up to user-mode to update devX/uri for support of
    autologin.
    
    These sysfs information are used both for autologin as well
    as support for exporting exofs via a pNFSD server in user-mode.
    (.eg NFS-Ganesha)
    Signed-off-by: NSachin Bhamare <sbhamare@panasas.com>
    Signed-off-by: NBoaz Harrosh <bharrosh@panasas.com>
    8b56a30c
super.c 26.5 KB