https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=226583
--- Comment #1 from Dexuan Cui <[email protected]> --- When the issue happens, the Azure host (in the VM, "dmesg |grep "Hyper-V Version" shows: "Hyper-V Version: 10.0.14393 [SP0]) reports da2 as a SPC-2 device. I tried to reproduce the bug on local Hyper-V hosts (which always report da2 as a SPC-3 device), but I couldn't repro it. So far, I can only reproduce the bug with some specific VM sizes, e.g. Standard D4 v2 (8 vcpus, 28 GB memory) ) in West Central US region. Note: some people also reported some other VM sizes can also reproduce the bug. It looks all the affected VM sizes use HDD-backed disks. If we create a VM with SSD-backed disks, the bug can't repro. And, with a HDD-backed disk, if we avoid attaching the disk to LUN0, it looks the bug can't repro either. So, two possible mitigation solutions are: a) use a VM size that supports SSD-backed disks; b) attach any extra data disk to a LUN whose number is not zero. -- You are receiving this mail because: You are the assignee for the bug. _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-bugs To unsubscribe, send any mail to "[email protected]"
