------- Comment From pschm...@de.ibm.com 2016-03-07 01:33 EDT------- Problem persists with kernel 4.4.0-9-generic
Did run some thousand reboots over the weekend....no enccw0.0.f5f0 network available on Monday morning. uname -a Linux s8330025 4.4.0-9-generic #24-Ubuntu SMP Mon Feb 29 19:30:59 UTC 2016 s390x s390x s390x GNU/Linux root@s8330025:/etc# ip a s ip a s 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: enccw0.0.f5f0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether 02:a2:1e:00:01:43 brd ff:ff:ff:ff:ff:ff inet 9.152.162.175/22 brd 9.152.163.255 scope global enccw0.0.f5f0 valid_lft forever preferred_lft forever 3: lxcbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN group default qlen 1000 link/ether 96:3d:1a:6d:9a:2e brd ff:ff:ff:ff:ff:ff inet 10.0.3.1/24 scope global lxcbr0 valid_lft forever preferred_lft forever inet6 fe80::943d:1aff:fe6d:9a2e/64 scope link valid_lft forever preferred_lft forever root@s8330025:/etc# ifconfig ifconfig lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) lxcbr0 Link encap:Ethernet HWaddr 96:3d:1a:6d:9a:2e inet addr:10.0.3.1 Bcast:0.0.0.0 Mask:255.255.255.0 inet6 addr: fe80::943d:1aff:fe6d:9a2e/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:7 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:570 (570.0 B) root@s8330025:/etc# ifup enccw0.0.f5f0 ifup enccw0.0.f5f0 RTNETLINK answers: File exists Failed to bring up enccw0.0.f5f0. root@s8330025:/etc# ifdown enccw0.0.f5f0 ifdown enccw0.0.f5f0 ifdown: interface enccw0.0.f5f0 not configured -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1552788 Title: network lost after large number of reboots Status in linux package in Ubuntu: New Bug description: ---Problem Description--- network lost after large number of reboots (>500) Contact Information = pschm...@de.ibm.com ---uname output--- Linux s8330025 4.4.0-2-generic #16-Ubuntu SMP Thu Jan 28 15:44:18 UTC 2016 s390x s390x s390x GNU/Linux Machine Type = s390 z/VM Guest ---Steps to Reproduce--- reboot z/VM guest several times >500. After a large number of reboots the network interfaces doesn't come up any more. The z/VM guest boots fine, unless the missing network. Impossible to bring up network again manually. == Further debug shows that it is the "ip link set enccw0.0.f5f0 up" that is failing with "RTNETLINK answers: Operation not permitted". Looking for further debug assistance in determining why the CAP_NET_ADMIN check for the root user running ip might be failing. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1552788/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
