https://bugzilla.kernel.org/show_bug.cgi?id=118071 Bug ID: 118071 Summary: open-iscsi Ping timeout erro Product: IO/Storage Version: 2.5 Kernel Version: 4.4.7 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: SCSI Assignee: linux-scsi@xxxxxxxxxxxxxxx Reporter: liuzhengyuang521@xxxxxxxxx Regression: No Hi everyone: I create a target using fileio as the backend storage on ARM64 server. The initiator reported some errors showed bellow while perform iozone test. [178444.145679] connection14:0: ping timeout of 5 secs expired, recv timeout 5, last rx 4339462894, last ping 4339464146, now 4339465400 [178444.145706] connection14:0: detected conn error (1011) [178469.674313] connection14:0: detected conn error (1020) [178504.420979] connection14:0: ping timeout of 5 secs expired, recv timeout 5, last rx 4339477953, last ping 4339479204, now 4339480456 [178504.421001] connection14:0: detected conn error (1011) [178532.064262] connection14:0: detected conn error (1020) [178564.584087] connection14:0: ping timeout of 5 secs expired, recv timeout 5, last rx 4339492980, last ping 4339494232, now 4339495484 .............................. I try to trace the function call of target iscsi. Then, I found the receiving thread of target iscsi blocked at fd_execute_sync_cache -> vfs_fsync_range. Further, vfs_fsync_range may takes more than 10 seconds to return,while initiator Ping timeout would happened after 5 seconds. vfs_fsync_range was call with the form vfs_fsync_range(fd_dev->fd_file, 0, LLONG_MAX, 1) every times which means sync all device cache. So, is this a bug? How does Initiator send sync_cache scsi command? Does it need to sync all device cache at once? Any reply would be thankful. -- You are receiving this mail because: You are the assignee for the bug. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
