Why fc-hba show 4gb speed only for 8G fibre channel adapter after its replacement?
Issue
- Due to HBA Hardware failure , replace it with new HBA card.
$ cat lspci |grep -i fibre
0b:00.0 FibreChannel [0c04]: Emulex Corporation LPe12000 Series 8Gb Fibre Channel Adapter[10df:f100] (rev 03)<=new HBA showing 8G
84:00.0 FibreChannel [0c04]: Emulex Corporation LPe12000 Series 8Gb Fibre Channel Adapter[10df:f100] (rev 03)
- Only 4gb speed displayed from vendor script.
# ./check_fiber.sh
Path SCSI WWN State Speed Brand Firmware Topology
host1 0000:0b:00.0 10000090fa402**1 Online 4 Gbit Emulex 2.01A12 no_cmd
^^^^^
host2 0000:84:00.0 10000090faecc**0 Online 8 Gbit Emulex 2.10X6 no_cmd
- Checking /sys/class/fc_host/host*/speed that the card working only at 4g.
$ grep -Hv "zz" /sys/class/fc_host/host*/speed
/sys/class/fc_host/host1/speed:4 Gbit
/sys/class/fc_host/host2/speed:8 Gbit
Environment
- Red Hat Enterprise Linux(RHEL)
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