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The failures are observed > when TEST_DEV specifies a NVMe device with metadata. The commit > introduced a new check in nvme_update_ns_info_block() to reject invalid > LBA data size. After this commit, namespaces with zero LBA data size are > rejected. > > According to the comment in nvmet_passthru_override_id_ns() in the > kernel code drivers/nvme/target/passthru.c, "Presently the NVMEoF target > code does not support sending metadata, so we must disable it here". For > that purpose, the function sets the LBA data size to zero for all LBA > format (lbaf) entries with metadata. After the trigger commit, these > entries become invalid for NVMEoF target passthru, then namespaces with > metadata are not visible as block devices through the target setup. > > These test cases set up NVMEoF target passthru assuming the namespace > devices are visible, so they cannot find the namespaces and fail. > > To avoid the failures, skip the test cases when TEST_DEV has metadata. FYI, I applied this patch.