Oct 13 22:03:43 localhost kernel: [185521.096127] INFO: task jbd2/xvda1-8:136 blocked for more than 120Oct 13 22:03:43 localhost kernel: [185521.096157] jbd2/xvda1-8 D eb35fe18 0 136 2 0x00000000info from first message, cut for clarity>
Oct 13 22:05:43 lo
我一直在钻研Linux内核。并想要跟踪一个io请求,并确定到底是哪个进程发送了当前的io请求?[Thu Dec 31 15:18:49 2015] Ata: in block/blk-core.c in submit_bio current task: jbd2/sda1-8 pid:(494): WRITE block 54798672 on device sda1 (8 sectors)
输出显示当前进程是jbd2。根据
] JBD2: Error while async write back metadata bh 26214407.[127433.300674] JBD2: Error while async write back metadata bh 26214405.[127433.301042] JBD2: Error while async write back metadata b