Is there capacity within amazon/centos/linux to switch the ordering round of nitro disks?
I have an ami which consistently has devices in the incorrect order, by this I mean nvme1n1 and nvme2n1 should be switched round. If I run nvme id-ctrl -v /dev/nvme1n1 | grep sn I get a different serial number back following a reboot. I know they're "wrong" as the serial numbers are not reflective of their capacity... Hope that makes sense (I appreciate it's a bit confusing). This only ever occurs on servers with two or more disks; upon a reboot the disks are "correct"
My question is, is there a method of forcing the nvme device to disconnect and reconnect (in the hope that the mapping works as expected in the correct order).
Thanks guys
Very simple in the end:
echo 1 > /sys/bus/pci/devices/$(readlink -f /sys/class/nvme/nvme1 | awk -F "/" '{print $5}')/remove
echo 1 > /sys/bus/pci/devices/$(readlink -f /sys/class/nvme/nvme2 | awk -F "/" '{print $5}')/remove
echo 1 > /sys/bus/pci/rescan