Date: Mon, 11 Jul 2016 09:43:29 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 211000] [Hyper-V] Online VHDX Resize doesn't work properly Message-ID: <bug-211000-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=211000 Bug ID: 211000 Summary: [Hyper-V] Online VHDX Resize doesn't work properly Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Some People Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: decui@microsoft.com Hyper-V has a feature called Online VHDX Resize: the disk capacity can be changed by the host when the VM is running. Note: the host doesn't notify the VM of the capacity change proactively; when the VM sends the next I/O request to the host, the host will report an error (SCSI_STATUS_CHECK_COND) with sense data supplied (the sense data indicates a disk capacity change) and the VM is supposed to check and handle the capacity change properly, and re-submit the I/O request. However, the current I/O response handling in the VM has a bug: the host's response's status is lost unintentionally, so the upper SCSI layer in the VM always thinks the I/O request is completed successfully while it's not (this causes undefined behaviors), and ignores the sense data. -- You are receiving this mail because: You are the assignee for the bug.
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