Date: Wed, 18 Mar 2020 13:05:40 +0900 From: Wanpeng Qian <wanpengqian@gmail.com> To: FreeBSD virtualization <freebsd-virtualization@freebsd.org> Subject: bhyve: passthrough SMART info from host nvme controller Message-ID: <CANBJ%2BxRdvTUHV0PQeBK2y2bCWDi5idqrD-AsHCT02fWkBLzeQQ@mail.gmail.com>
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Hello all. I have an idea about provide SMART of nvme controller. Currently bhyve's nvme controller didn't provide any SMART information. if we provide fake SMART, that is meaningless. I am thinking we can read the host nvme controller SMART and provide that to guest. such as nvme,disk1.img,maxq=16,qsz=8,ioslots=1,sectsz=512,ser=QNVME778,smart=nvme0 I have done some draft code. and it work. here is the output of nvmecontrol identify and logpage. root@smart:~ # nvmecontrol identify nvme0 Controller Capabilities/Features ================================ Vendor ID: fb5d Subsystem Vendor ID: 0000 Serial Number: QNVME778 Model Number: bhyve-NVMe Firmware Version: 1.0 Recommended Arb Burst: 4 IEEE OUI Identifier: 58 9c fc Multi-Path I/O Capabilities: Not Supported Max Data Transfer Size: 2097152 bytes Controller ID: 0x0000 Version: 1.3.0 Admin Command Set Attributes ============================ Security Send/Receive: Not Supported Format NVM: Supported Firmware Activate/Download: Not Supported Namespace Managment: Not Supported Device Self-test: Not Supported Directives: Not Supported NVMe-MI Send/Receive: Not Supported Virtualization Management: Not Supported Doorbell Buffer Config: Not Supported Get LBA Status: Not Supported Sanitize: Not Supported Abort Command Limit: 3 Async Event Request Limit: 5 Number of Firmware Slots: N/A Firmware Slot 1 Read-Only: N/A Per-Namespace SMART Log: No Error Log Page Entries: 1 Number of Power States: 2 Total NVM Capacity: 0 bytes Unallocated NVM Capacity: 0 bytes NVM Command Set Attributes ========================== Submission Queue Entry Size Max: 64 Min: 64 Completion Queue Entry Size Max: 16 Min: 16 Number of Namespaces: 1 Compare Command: Not Supported Write Uncorrectable Command: Not Supported Dataset Management Command: Not Supported Write Zeroes Command: Not Supported Save Features: Not Supported Reservations: Not Supported Timestamp feature: Not Supported Verify feature: Not Supported Fused Operation Support: Not Supported Format NVM Attributes: All-NVM Erase, All-NVM Format Volatile Write Cache: Not Present NVM Subsystem Name: root@smart:~ # nvmecontrol logpage -p 2 nvme0 SMART/Health Information Log ============================ Critical Warning State: 0x00 Available spare: 0 Temperature: 0 Device reliability: 0 Read only: 0 Volatile memory backup: 0 Temperature: 309 K, 35.85 C, 96.53 F Available spare: 100 Available spare threshold: 10 Percentage used: 0 Data units (512,000 byte) read: 173065 Data units written: 9381970 Host read commands: 4123220 Host write commands: 846568092 Controller busy time (minutes): 948 Power cycles: 918 Power on hours: 2631 Unsafe shutdowns: 812 Media errors: 0 No. error info log entries: 2546 Warning Temp Composite Time: 75 Error Temp Composite Time: 58 Temperature 1 Transition Count: 0 Temperature 2 Transition Count: 0 Total Time For Temperature 1: 0 Total Time For Temperature 2: 0 But currently bhyve has Capsicum capability, I cannot open /dev/nvme0 within pci_nvme.c without extra code. (currently I just disable the Capsicum capability) any feedback?
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