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[xen master] docs: add some clarification to xenstore-migration.md



commit 20c9e4581ae3d35b776838defab424c5601310da
Author:     Juergen Gross <jgross@xxxxxxxx>
AuthorDate: Thu Feb 17 12:47:26 2022 +0100
Commit:     Julien Grall <jgrall@xxxxxxxxxx>
CommitDate: Thu Feb 24 15:18:04 2022 +0000

    docs: add some clarification to xenstore-migration.md
    
    The Xenstore migration document is missing the specification that a
    node record must be preceded by the record of its parent node in case
    of live update.
    
    Add that missing part.
    
    Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
    Acked-by: Julien Grall <jgrall@xxxxxxxxxx>
---
 docs/designs/xenstore-migration.md | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/docs/designs/xenstore-migration.md 
b/docs/designs/xenstore-migration.md
index 5f1155273e..b94af7fd7c 100644
--- a/docs/designs/xenstore-migration.md
+++ b/docs/designs/xenstore-migration.md
@@ -316,6 +316,11 @@ a _committed_ node (globally visible in xenstored) or a 
_pending_ node (created
 or modified by a transaction for which there is also a `TRANSACTION_DATA`
 record previously present).
 
+Each _committed_ node in the stream is required to have an already known parent
+node. A parent node is known if it was either in the node data base before the
+stream was started to be processed, or if a `NODE_DATA` record for that parent
+node has already been processed in the stream.
+
 
 ```
     0       1       2       3    octet
--
generated by git-patchbot for /home/xen/git/xen.git#master



 


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