On 10/15/18 12:23 PM, Geoff Levand wrote: > Hi Jens, > > On 10/15/2018 09:27 AM, Jens Axboe wrote:> Can you try and change the queue depth to 1 instead of 2? It's set in> the tag_set, as ->queue_depth. > > With this change: > > - set->queue_depth = 2; > + set->queue_depth = 1; > > Something is still wrong. It can sometimes boot, sometimes udevd hangs > up on /sbin/blkid. If it boots I can sometimes mount a ps3disk > partition, but then cat or echo to a file will hang. Other times the > mount command will hang. I saw this error appear in the system log: Weird, it looks like we're waiting for something to complete, and then we have a few others waiting for queue new IO. Can you try and move the blk_mq_end_request() inside the priv->lock section and see if that helps? -- Jens Axboe
