------- Comment From vipar...@in.ibm.com 2017-01-13 03:54 EDT------- (In reply to comment #21) > I'm claiming this bug for myself since I know about os-prober and have other > grub/os-prober updates in flight. Targetting to ubuntu-17.01. > > Is this HTX thing doing read/write operations directly on the disk, or does > it use a filesystem? Is it using a known filesystem or its own format? > > "This caused write fails for sda1, sdb1 disks along with nvme disks and also > logged Linux errors." > > Do you mean write errors as reported by HTX?
HTX is a user space test-suite using OS system calls to perform write/read operations to disks. It opens disks using O_DIRECT flag, thus bypasses filesystem cache with write/read ops. Here HTX has reported write fails with errno = 1 (Operation not permitted) at same time as os-prober fails get logged into Linux logs. So wondering if its os-prober that somehow caused HTX write operations to fail ? And in case yes, wondering if there a way we can prevent write fails for user space application due to conflict with os-prober ? > > The os-prober errors listed are just cosmetic, caused by the fact that > os-prober, when run (this is run by grub/update-grub to detect possible > other OSes on the system), will "probe" the filesystems: first detecting the > available partitions, then attempting to "mount" them to finish probing. > This is normally done by "grub-probe" and "grub-mount", which should be > relatively safe, but also *had* another code path to use straight "mount" > which has shown issues (a fix is available in xenial-proposed for it, should > be made available in updates soon). > > What version of os-prober do you have installed on this system? (use dpkg -l > os-prober) > > If all else fails, we could disable os-prober altogether; there's another > fix coming up that does so on PowerNV due to the effect on Petitboot. It will be good to avoid os-prober errors getting logged into Linux. This will avoid confusion about things going wrong with file systems onto box, which isn't the reality due to cosmetic errors. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1648561 Title: HTX (htxubuntu) DASD exercisers fail To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/os-prober/+bug/1648561/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
