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migration: Deprecate block migration

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It is obsolete.  It is better to use driver-mirror with NBD instead.

CC: Kevin Wolf <kwolf@redhat.com>
CC: Eric Blake <eblake@redhat.com>
CC: Stefan Hajnoczi <stefanha@redhat.com>
CC: Hanna Czenczek <hreitz@redhat.com>

Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-ID: <20231018115513.2163-5-quintela@redhat.com>
This commit is contained in:
Juan Quintela
2023-10-18 13:55:12 +02:00
parent 8846b5bfca
commit 66db46ca83
4 changed files with 45 additions and 6 deletions
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10
docs/about/deprecated.rst
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@ -486,3 +486,13 @@ Use blockdev-mirror with NBD instead.
As an intermediate step the ``blk`` functionality can be achieved by
setting the ``block`` migration capability to ``true``. But this
capability is also deprecated.
block migration (since 8.2)
'''''''''''''''''''''''''''
Block migration is too inflexible. It needs to migrate all block
devices or none.
Please see "QMP invocation for live storage migration with
``blockdev-mirror`` + NBD" in docs/interop/live-block-operations.rst
for a detailed explanation.