I've tried to migrate a few containers from a OpenVZ node running CentOS-5 -> CentOS-6.2.
While I was away for 5 minutes during a migration, I lost the connection to the server. After rebooting it from remote location I found this in the log files:
Dec 29 10:51:50 vz03 kernel: [58577.746434] ------------[ cut here ]------------
Dec 29 10:51:50 vz03 kernel: [58577.746448] WARNING: at kernel/bc/beancounter.c:430 delayed_release_beancounter+0x4a3/0x4d0() (Not tainted)
Dec 29 10:51:50 vz03 kernel: [58577.746453] Hardware name: PowerEdge R410
Dec 29 10:51:50 vz03 kernel: [58577.746456] Modules linked in: vzethdev simfs vzrst nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 vzcpt nfs lockd fscache nfs_acl auth_rpcgss sunrpc vzdquota ip6t_REJECT ip6table_mangle ip6table_filter ip6_tables xt_length xt_hl xt_tcpmss xt_TCPMSS iptable_mangle iptable_filter xt_multiport xt_limit xt_dscp ipt_REJECT ip_tables vzevent vznetdev vzmon vzdev ipv6 dm_mirror dm_region_hash dm_log power_meter hwmon dcdbas microcode serio_raw ghes hed iTCO_wdt iTCO_vendor_support sg i7core_edac edac_core bnx2 ext4 mbcache jbd2 sr_mod cdrom sd_mod crc_t10dif pata_acpi ata_generic ata_piix megaraid_sas dm_mod [last unloaded: speedstep_lib]
Dec 29 10:51:50 vz03 kernel: [58577.746516] Pid: 238, comm: ubcleand veid: 0 Not tainted 2.6.32-042stab044.11 #1
Dec 29 10:51:50 vz03 kernel: [58577.746520] Call Trace:
Dec 29 10:51:50 vz03 kernel: [58577.746529] [<ffffffff810697f7>] ? warn_slowpath_common+0x87/0xc0
Dec 29 10:51:50 vz03 kernel: [58577.746534] [<ffffffff8106984a>] ? warn_slowpath_null+0x1a/0x20
Dec 29 10:51:50 vz03 kernel: [58577.746540] [<ffffffff810a5263>] ? delayed_release_beancounter+0x4a3/0x4d0
Dec 29 10:51:50 vz03 kernel: [58577.746546] [<ffffffff814ca872>] ? thread_return+0x4e/0x85c
Dec 29 10:51:50 vz03 kernel: [58577.746553] [<ffffffff810935fe>] ? prepare_to_wait+0x4e/0x80
Dec 29 10:51:50 vz03 kernel: [58577.746558] [<ffffffff810a4dc0>] ? delayed_release_beancounter+0x0/0x4d0
Dec 29 10:51:50 vz03 kernel: [58577.746566] [<ffffffff8108cc30>] ? worker_thread+0x190/0x2d0
Dec 29 10:51:50 vz03 kernel: [58577.746571] [<ffffffff81093310>] ? autoremove_wake_function+0x0/0x40
Dec 29 10:51:50 vz03 kernel: [58577.746577] [<ffffffff8108caa0>] ? worker_thread+0x0/0x2d0
Dec 29 10:51:50 vz03 kernel: [58577.7Dec 29 11:06:18 vz03 kernel: imklog 4.6.2, log source = /proc/kmsg started.
I also noticed I had a few of these:
Dec 29 10:41:01 vz03 kernel: [57930.072415] Core dump to |/usr/libexec/abrt-hook-ccpp 11 0 29401 0 0 1325151661 e pipe failed
Any idea what causes this?