To help see if this is an issue in the hv_storvsc driver; I took the storvsc driver code from 3.13.0-34.60 (presumably a good build) and applied it to the 4.2.0-27 kernel (presumably a bad build). Ran tiobench with backups and was able to repro after about 48 hours.
This implies that either:
1) The bad commit is not in the hv_storvsc driver.
2) 3.13.0-34 is not a good build as we previously thought. I'll wait to hear if other people can repro this issue on 3.13.0-34.
To help see if this is an issue in the hv_storvsc driver; I took the storvsc driver code from 3.13.0-34.60 (presumably a good build) and applied it to the 4.2.0-27 kernel (presumably a bad build). Ran tiobench with backups and was able to repro after about 48 hours.
This implies that either:
1) The bad commit is not in the hv_storvsc driver.
2) 3.13.0-34 is not a good build as we previously thought. I'll wait to hear if other people can repro this issue on 3.13.0-34.
The storvsc driver code I took for this snapshot => http:// kernel. ubuntu. com/git/ ubuntu/ ubuntu- trusty. git/tree/ drivers/ scsi/storvsc_ drv.c?id= 3402ec8cbd984e8 e2a1f99b51ec6a1 5a23328223