mirror of
https://github.com/xen-project/xen.git
synced 2026-10-28 02:01:24 +01:00
docs: update xenstore migration stream definition
In order to close a race window for Xenstore live update when using the new unique_id of domains, the migration stream needs to contain this unique_id for each domain known by Xenstore. Signed-off-by: Juergen Gross <jgross@suse.com> Acked-by: Anthony PERARD <anthony.perard@vates.tech>
This commit is contained in:
Juergen Gross authored and Jan Beulich committed
1 parent
930279d96c
commit
60649eafb5
1 file changed
+17
-1
@@ -156,7 +156,7 @@ the domain being migrated.
|
|||||||
```
|
```
|
||||||
0 1 2 3 4 5 6 7 octet
|
0 1 2 3 4 5 6 7 octet
|
||||||
+-------+-------+-------+-------+-------+-------+-------+-------+
|
+-------+-------+-------+-------+-------+-------+-------+-------+
|
||||||
| conn-id | conn-type | |
|
| conn-id | conn-type | fields |
|
||||||
+-------------------------------+---------------+---------------+
|
+-------------------------------+---------------+---------------+
|
||||||
| conn-spec
|
| conn-spec
|
||||||
...
|
...
|
||||||
@@ -165,6 +165,9 @@ the domain being migrated.
|
|||||||
+---------------+---------------+-------------------------------+
|
+---------------+---------------+-------------------------------+
|
||||||
| data
|
| data
|
||||||
...
|
...
|
||||||
|
+---------------------------------------------------------------+
|
||||||
|
| unique-id |
|
||||||
|
+---------------------------------------------------------------+
|
||||||
```
|
```
|
||||||
|
|
||||||
|
|
||||||
@@ -178,6 +181,16 @@ the domain being migrated.
|
|||||||
| | 0x0001: socket |
|
| | 0x0001: socket |
|
||||||
| | 0x0002 - 0xFFFF: reserved for future use |
|
| | 0x0002 - 0xFFFF: reserved for future use |
|
||||||
| | |
|
| | |
|
||||||
|
| `fields` | A collection of flags indicating presence |
|
||||||
|
| | of additional fields after the variable |
|
||||||
|
| | length `data` part. The additional fields |
|
||||||
|
| | will start after a possible padding for |
|
||||||
|
| | aligning to a 8 octet boundary. |
|
||||||
|
| | Defined flag values (to be or-ed): |
|
||||||
|
| | 0x0001: `unique_id` present (only needed for |
|
||||||
|
| | `shared ring` connection in live |
|
||||||
|
| | update streams). |
|
||||||
|
| | |
|
||||||
| `conn-spec` | See below |
|
| `conn-spec` | See below |
|
||||||
| | |
|
| | |
|
||||||
| `in-data-len` | The length (in octets) of any data read |
|
| `in-data-len` | The length (in octets) of any data read |
|
||||||
@@ -193,6 +206,9 @@ the domain being migrated.
|
|||||||
| `data` | Pending data: first in-data-len octets of |
|
| `data` | Pending data: first in-data-len octets of |
|
||||||
| | read data, then out-data-len octets of |
|
| | read data, then out-data-len octets of |
|
||||||
| | written data (any of both may be empty) |
|
| | written data (any of both may be empty) |
|
||||||
|
| | |
|
||||||
|
| `unique-id` | Unique identifier of a domain |
|
||||||
|
| | |
|
||||||
|
|
||||||
In case of live update the connection record for the connection via which
|
In case of live update the connection record for the connection via which
|
||||||
the live update command was issued will contain the response for the live
|
the live update command was issued will contain the response for the live
|
||||||
|
|||||||