Recently, CKI project found blktests nbd/002 failure. The test case sets up the connection to the nbd device, then checks partition existence in the device to confirm that the kernel reads the partition table in the device. Usually, this partition read by kernel is completed before the test script checks the partition existence. However, the partition read often completes after the partition existence check, then the test case fails. I think the test script checks the partition existence too early, and this should be fixed in the test script. During this investigation, I noticed that the test case nbd/002 handles the ioctl interface and the netlink interface opposite. The first patch fixes this wrong interface handling. The second patch addresses the too early partition existence check issue. Link to v1 patch: https://lore.kernel.org/linux-block/20240319085015.3901051-1-shinichiro.kawasaki@xxxxxxx/ Changes from v1: * Added another patch to fix ioctl/netlink interface handling mistake * Avoid the nbd/002 failure by repeating the partition existence check Shin'ichiro Kawasaki (2): nbd/002: fix wrong -L/-nonetlink option usage nbd/002: repeat partition existence check for ioctl interface tests/nbd/002 | 26 ++++++++++++++++++-------- 1 file changed, 18 insertions(+), 8 deletions(-) -- 2.44.0
