** Description changed: - python-rtslib-fb needs to properly handle the new kernel module - attribute cpus_allowed_list. + [ Impact ] + + * getting information about "attached_luns" fails via python3-rtslib-fb + when running the HWE kernel on jammy due to the new kernel module + attribute cpus_allowed_list + + * As a consequence, the following operations on jammy fails: + + - creating an iSCSI target with Ceph-iSCSI service + https://docs.ceph.com/en/quincy/rbd/iscsi-target-cli/ + + (LUN.allocate) created test-iscsi-pool/disk_1 successfully + (LUN.add_dev_to_lio) Adding image 'test-iscsi-pool/disk_1' to LIO backstore user:rbd + tcmu-runner: tcmu_rbd_open:1162 rbd/test-iscsi-pool.disk_1: address: {172.16.12.185:0/2337103748} + (LUN.add_dev_to_lio) Successfully added test-iscsi-pool/disk_1 to LIO + LUN alloc problem - Delete from LIO/backstores failed - [Errno 20] Not a directory: '/sys/kernel/config/target/iscsi/cpus_allowed_list' + + - targetcli clearconfig confirm=True + + [Errno 20] Not a directory: + '/sys/kernel/config/target/iscsi/cpus_allowed_list' + + - targetctl clear + + $ sudo targetctl clear + Traceback (most recent call last): + File "/usr/bin/targetctl", line 82, in <module> + main() + File "/usr/bin/targetctl", line 79, in main + funcs[sys.argv[1]](savefile) + File "/usr/bin/targetctl", line 57, in clear + RTSRoot().clear_existing(confirm=True) + File "/usr/lib/python3/dist-packages/rtslib_fb/root.py", line 318, in clear_existing + so.delete() + File "/usr/lib/python3/dist-packages/rtslib_fb/tcm.py", line 269, in delete + for lun in self._gen_attached_luns(): + File "/usr/lib/python3/dist-packages/rtslib_fb/tcm.py", line 215, in _gen_attached_luns + for tpgt_dir in listdir(tpgts_base): + NotADirectoryError: [Errno 20] Not a directory: '/sys/kernel/config/target/iscsi/cpus_allowed_list' + + + [ Test Plan ] + + ## create two VMs, one for the GA kernel and the other for the HWE kernel + for kernel in ga hwe; do + uvt-kvm create \ + --cpu=4 --memory=4096 \ + rtslib-fb-sru-testing-$kernel \ + release=jammy + + uvt-kvm wait rtslib-fb-sru-testing-$kernel + uvt-kvm ssh rtslib-fb-sru-testing-$kernel 'sudo apt-get update && sudo apt-get upgrade -y' + uvt-kvm ssh rtslib-fb-sru-testing-$kernel 'sudo apt-get install -y python3-rtslib-fb targetcli-fb' + done + + ## Install the HWE kernel and reboot + uvt-kvm ssh rtslib-fb-sru-testing-hwe 'sudo apt-get install -y linux-generic-hwe-22.04 && sudo reboot' + + + ## Upgrade python3-rtslib-fb to the -proposed one + + + ## create the test iSCSI target based on the quickstart guide in targetcli(8) + ## https://manpages.ubuntu.com/manpages/jammy/en/man8/targetcli.8.html + cat <<EOF | sudo targetcli + backstores/fileio create test /tmp/test.img 100m; + iscsi/ create iqn.2006-04.com.example:test-target; + cd iscsi/iqn.2006-04.com.example:test-target/tpg1/; + luns/ create /backstores/fileio/test; + set attribute generate_node_acls=1; + EOF + + ## confirm the test iSCSI target is discoverable locally and confirm the discovered one is output in the terminal + sudo iscsiadm --mode discoverydb --type sendtargets \ + --portal 127.0.0.1 --discover + + ## tear down the test iSCSI target and confirm there is no error returned + sudo targetcli clearconfig confirm=True + + + [ Where problems could occur ] + + The worst case scenario is it could cause a regression to the + environment where the GA kernel is still running since the fix is for + newer kernels. + + To mitigate the risk, the same test case will be run for both GA kernel + and HWE kernel machines with -proposed package. + + [ Other Info ] + + * upstream fix https://github.com/open-iscsi/rtslib-fb/commit/8d2543c4da62e962661011fea5b19252b9660822 + + + ==== + + + python-rtslib-fb needs to properly handle the new kernel module attribute cpus_allowed_list. This is causing a problem during targetcli-fb's autopkgtest on s390x: https://autopkgtest.ubuntu.com/results/autopkgtest- kinetic/kinetic/s390x/t/targetcli-fb/20220830_075622_04113@/log.gz
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1988366 Title: python-rtslib-fb needs to handle new attribute cpus_allowed_list To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/python-rtslib-fb/+bug/1988366/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
