On 10/13/20 2:12 PM, Qian Cai wrote: > On Tue, 2020-10-13 at 14:58 -0400, Vivek Goyal wrote: >> I am wondering if virtiofsd still alive and responding to requests? I >> see another task which is blocked on getdents() for more than 120s. >> >> [10580.142571][ T348] INFO: task trinity-c36:254165 blocked for more than >> 123 >> +seconds. >> [10580.143924][ T348] Tainted: G O 5.9.0-next-20201013+ #2 >> [10580.145158][ T348] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" >> +disables this message. >> [10580.146636][ T348] task:trinity-c36 state:D stack:26704 pid:254165 >> ppid: >> +87180 flags:0x00000004 >> [10580.148260][ T348] Call Trace: >> [10580.148789][ T348] __schedule+0x71d/0x1b50 >> [10580.149532][ T348] ? __sched_text_start+0x8/0x8 >> [10580.150343][ T348] schedule+0xbf/0x270 >> [10580.151044][ T348] schedule_preempt_disabled+0xc/0x20 >> [10580.152006][ T348] __mutex_lock+0x9f1/0x1360 >> [10580.152777][ T348] ? __fdget_pos+0x9c/0xb0 >> [10580.153484][ T348] ? mutex_lock_io_nested+0x1240/0x1240 >> [10580.154432][ T348] ? find_held_lock+0x33/0x1c0 >> [10580.155220][ T348] ? __fdget_pos+0x9c/0xb0 >> [10580.155934][ T348] __fdget_pos+0x9c/0xb0 >> [10580.156660][ T348] __x64_sys_getdents+0xff/0x230 >> >> May be virtiofsd crashed and hence no requests are completing leading >> to a hard lockup? > No, it was not crashed. After I had to forcibly close the guest, the virtiofsd > daemon will exit normally. However, I can't tell exactly if the virtiofsd > daemon > was still functioning normally. I'll enable the debug and retry to see if > there > is anything interesting.
Though it's likely not related, randomly but perhaps twice every three days I notice when a VM is stopped, it can't be restarted because the virtiofsd instance from the previous run hasn't exited and won't exit no matter how long a delay absent a kill -KILL. I'm not sure how to debug or get info on that. > > _______________________________________________ > Virtio-fs mailing list > [email protected] > https://www.redhat.com/mailman/listinfo/virtio-f _______________________________________________ Virtio-fs mailing list [email protected] https://www.redhat.com/mailman/listinfo/virtio-fs
