On Mon, Dec 11, 2017 at 4:52 PM, Adi Pircalabu adi@ddns.com.au wrote:
Has anyone seen this recently? I couldn't replicate it on:
- CentOS 6 running kernel-2.6.32-696.16.1.el6.x86_64,
kernel-lt-4.4.105-1.el6.elrepo.x86_64
- CentOS 7 running 4.9.67-1.el7.centos.x86_64
But I can replicate it consistently running "xl -v vcpu-set <domU> <val>" on:
- CentOS 6 running 4.14.5-1.el6.elrepo.x86_64
- CentOS 7 running 4.14.5-1.el7.elrepo.x86_64
dom0 versions tested with similar results in the domU:
- 4.6.6-6.el7 on kernel 4.9.63-29.el7.x86_64
- 4.6.3-15.el6 on kernel 4.9.37-29.el6.x86_64
Noticed behaviour:
- These commands stall:
top ls -l /var/tmp ls -l /tmp
- Stuck in D state on the CentOS 7 domU:
root 5 0.0 0.0 0 0 ? D 11:20 0:00 [kworker/u8:0] root 316 0.0 0.0 0 0 ? D 11:20 0:00 [jbd2/xvda1-8] root 1145 0.0 0.2 116636 4776 ? Ds 11:20 0:00 -bash root 1289 0.0 0.1 25852 2420 ? Ds 11:35 0:00 /usr/bin/systemd-tmpfiles --clean root 1290 0.0 0.1 125248 2696 pts/1 D+ 11:44 0:00 ls --color=auto -l /tmp/ root 1293 0.0 0.1 125248 2568 pts/2 D+ 11:44 0:00 ls --color=auto -l /var/tmp root 1296 0.0 0.2 116636 4908 pts/3 Ds+ 11:44 0:00 -bash root 1358 0.0 0.1 125248 2612 pts/4 D+ 11:47 0:00 ls --color=auto -l /var/tmp
At a first glance it appears the issue is in 4.14.5 kernel. Stack traces follow:
Adi Pircalabu
Can you test-install 4.15-rcX
to see if the problem persists in the latest kernel?:
http://elrepo.org/people/ajb/devel/kernel-ml/el7/x86_64/RPMS/
Akemi