OFED NVMET and NVMET-RDMA on Ubuntu symbol errors

Infrastructure & Networking Software And Drivers
1

Hello, I tried installing ofed on unbuntu 20.04. I had issues inserting nvmet and nvmet-rdma. I know ubuntu 20.04 was only somewhat supported so i tried 19.10 but i am having the same issues.

basically i have tried the following install methods, they all install fine without error, but they all result in the same two errors:

ERROR: could not insert ‘nvmet_rdma’: Unknown symbol in module, or unknown parameter (see dmesg)

modprobe: ERROR: could not insert ‘nvmet’: Unknown symbol in module, or unknown parameter (see dmesg)

[ 2498.908659] nvmet: Unknown symbol nvme_find_pdev_from_bdev (err -2)

[ 2585.306697] nvmet: Unknown symbol nvme_find_pdev_from_bdev (err -2)

[ 2678.580571] nvmet: Unknown symbol nvme_find_pdev_from_bdev (err -2)

[ 2764.312226] nvmet: Unknown symbol nvme_find_pdev_from_bdev (err -2)

i tried running the install

./mlnxofedinstall --with-nvmf

./mlnxofedinstall --add-kernel-support --with-nvmf

./mlnxofedinstall --add-kernel-support --with-nvmf

i tried with and without dkms as well, same error each time. This is a brand new install of 19.10, so was 20.04 so i am really not sure whats wrong here. Im also not clear what the correct install switches are at this point since none seem to work.

2

Hello Grant,

Thank you for posting your inquiry on the Mellanox Community.

I was able to replicate this situation on a clean install of Ubuntu 20.04, booting off of an NVME drive.

Replication steps were as follows:

./mlnxofedinstall --with-nvmf

/etc/init.d/openibd restart

modprobe nvmet

Resolution was to rebuild the initramfs, and reboot the system

update-initramfs -u

reboot

This is occurring because your initramfs was generated before the Mellanox modules were installed - so the system is still booting using the inbox nvme module (which is incompatible with the newly built nvmet module).

Thank you,

Mellanox Technical Support