* Qian Cai (cai@xxxxxxxxxx) 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? > Virtiofsd is still working. Once this happened, I manually create a file on the > guest (in virtiofs) and then I can see the content of it from the host. If the virtiofsd is still running, attach gdb to it and get a full bt; gdb --pid whatever (gdb) t a a bt full that should show if it's stuck in one particular place. Dave > _______________________________________________ > Virtio-fs mailing list > Virtio-fs@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/virtio-fs -- Dr. David Alan Gilbert / dgilbert@xxxxxxxxxx / Manchester, UK
