On 04/17/2018 09:54 AM, Raghuram Devarakonda wrote: > I am working on a plugin based on tcmu-runner and would appreciate > some help. I took the sample file plugin (file_example.c) and modified > it. In my testing, I noticed that reads/writes to the TCMU device hang > and in all these cases, tcmu-runner daemon crashed. I understand that > the crashes are most probably due to the code I added but I am > wondering if there is any way to prevent the hang. For example, is > there a timeout in lio that would eventually fails the reads and > writes? Each tcmu device has a cmd_time_out attribute which is 30 seconds by default. If we do not get a response within that time out the command gets failed. When runner restarts and when using 4.16, it will fail all out standing commands in case you have cmd_time_out disabled. > > More over, any help in debugging crashes would also be greatly > appreciated. It would be great if someone can share any pointers in > working with tcmu-runner in general. > > Thanks for the help, > Raghu > > PS. I hope this is the right mailing list for "tcmu-runner". > -- > To unsubscribe from this list: send the line "unsubscribe target-devel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe target-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
