| wrote 4096/4096 bytes at offset 0 |
| 4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) |
| |
| === Launch VM === |
| {"execute": "nbd-server-start", "arguments": {"addr": {"data": {"path": "SOCK_DIR/PID-socket"}, "type": "unix"}}} |
| {"return": {}} |
| {"execute": "query-block-exports", "arguments": {}} |
| {"return": []} |
| |
| === Create a read-only NBD export === |
| {"execute": "block-export-add", "arguments": {"id": "export0", "node-name": "fmt", "type": "nbd"}} |
| {"return": {}} |
| {"execute": "query-block-exports", "arguments": {}} |
| {"return": [{"id": "export0", "node-name": "fmt", "shutting-down": false, "type": "nbd"}]} |
| exports available: 1 |
| export: 'fmt' |
| size: 67108864 |
| flags: 0x58f ( readonly flush fua df multi cache ) |
| min block: XXX |
| opt block: XXX |
| max block: XXX |
| available meta contexts: 1 |
| base:allocation |
| |
| |
| === Try a few invalid things === |
| {"execute": "block-export-add", "arguments": {"id": "#invalid", "node-name": "fmt", "type": "nbd"}} |
| {"error": {"class": "GenericError", "desc": "Invalid block export id"}} |
| {"execute": "block-export-add", "arguments": {"id": "export0", "node-name": "fmt", "type": "nbd"}} |
| {"error": {"class": "GenericError", "desc": "Block export id 'export0' is already in use"}} |
| {"execute": "block-export-add", "arguments": {"id": "export1", "node-name": "ro", "type": "nbd", "writable": true}} |
| {"error": {"class": "GenericError", "desc": "Cannot export read-only node as writable"}} |
| {"execute": "block-export-del", "arguments": {"id": "export1"}} |
| {"error": {"class": "GenericError", "desc": "Export 'export1' is not found"}} |
| {"execute": "query-block-exports", "arguments": {}} |
| {"return": [{"id": "export0", "node-name": "fmt", "shutting-down": false, "type": "nbd"}]} |
| |
| === Move export to an iothread === |
| {"execute": "device_add", "arguments": {"drive": "fmt", "driver": "scsi-hd", "id": "sda"}} |
| {"return": {}} |
| {"execute": "query-block-exports", "arguments": {}} |
| {"return": [{"id": "export0", "node-name": "fmt", "shutting-down": false, "type": "nbd"}]} |
| exports available: 1 |
| export: 'fmt' |
| size: 67108864 |
| flags: 0x58f ( readonly flush fua df multi cache ) |
| min block: XXX |
| opt block: XXX |
| max block: XXX |
| available meta contexts: 1 |
| base:allocation |
| |
| |
| === Add a writable export === |
| {"execute": "block-export-add", "arguments": {"description": "This is the writable second export", "id": "export1", "name": "export1", "node-name": "fmt", "type": "nbd", "writable": true, "writethrough": true}} |
| {"error": {"class": "GenericError", "desc": "Conflicts with use by sda as 'root', which does not allow 'write' on fmt"}} |
| {"execute": "device_del", "arguments": {"id": "sda"}} |
| {"return": {}} |
| {"data": {"device": "sda", "path": "/machine/peripheral/sda"}, "event": "DEVICE_DELETED", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}} |
| {"execute": "device_add", "arguments": {"drive": "fmt", "driver": "scsi-hd", "id": "sda", "share-rw": true}} |
| {"return": {}} |
| {"execute": "block-export-add", "arguments": {"description": "This is the writable second export", "id": "export1", "name": "export1", "node-name": "fmt", "type": "nbd", "writable": true, "writethrough": true}} |
| {"return": {}} |
| {"execute": "query-block-exports", "arguments": {}} |
| {"return": [{"id": "export1", "node-name": "fmt", "shutting-down": false, "type": "nbd"}, {"id": "export0", "node-name": "fmt", "shutting-down": false, "type": "nbd"}]} |
| exports available: 2 |
| export: 'fmt' |
| size: 67108864 |
| flags: 0x58f ( readonly flush fua df multi cache ) |
| min block: XXX |
| opt block: XXX |
| max block: XXX |
| available meta contexts: 1 |
| base:allocation |
| export: 'export1' |
| description: This is the writable second export |
| size: 67108864 |
| flags: 0xced ( flush fua trim zeroes df cache fast-zero ) |
| min block: XXX |
| opt block: XXX |
| max block: XXX |
| available meta contexts: 1 |
| base:allocation |
| |
| |
| === Connect qemu-io to export1, try removing exports === |
| read 4096/4096 bytes at offset 0 |
| 4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) |
| |
| wrote 4096/4096 bytes at offset 4096 |
| 4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) |
| |
| {"execute": "block-export-del", "arguments": {"id": "export1"}} |
| {"error": {"class": "GenericError", "desc": "export 'export1' still in use"}} |
| {"execute": "block-export-del", "arguments": {"id": "export0"}} |
| {"return": {}} |
| [{"data": {"id": "export0"}, "event": "BLOCK_EXPORT_DELETED", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}] |
| {"execute": "query-block-exports", "arguments": {}} |
| {"return": [{"id": "export1", "node-name": "fmt", "shutting-down": false, "type": "nbd"}]} |
| exports available: 1 |
| export: 'export1' |
| description: This is the writable second export |
| size: 67108864 |
| flags: 0xced ( flush fua trim zeroes df cache fast-zero ) |
| min block: XXX |
| opt block: XXX |
| max block: XXX |
| available meta contexts: 1 |
| base:allocation |
| |
| |
| === Connect qemu-io again, try force removing === |
| {"execute": "block-export-del", "arguments": {"id": "export1"}} |
| {"error": {"class": "GenericError", "desc": "export 'export1' still in use"}} |
| {"execute": "block-export-del", "arguments": {"id": "export1", "mode": "hard"}} |
| {"return": {}} |
| read failed: Input/output error |
| |
| {"execute": "query-block-exports", "arguments": {}} |
| {"return": []} |
| exports available: 0 |
| |
| |
| === Shut down QEMU === |