Get WWN for multipath block devices #409
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Device Mapper devices have DM_WWN set in udev in place of ID_WWN_WITH_VENDOR_EXTENSION. Reading DM_WWN allows us to see the WWN for multipath fibre channel or iSCSI block devices. Because DM_WWN contains the vendor extension, there is no corresponding change to WWNNoExtension. Signed-off-by: Zane Bitter <[email protected]>
jaypipes
approved these changes
Mar 13, 2025
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Device Mapper devices have
DM_WWNset in udev in place ofID_WWN_WITH_VENDOR_EXTENSION. ReadingDM_WWNallows us to see the WWN for multipath fibre channel or iSCSI block devices.Because
DM_WWNcontains the vendor extension, there is no corresponding change toWWNNoExtension.