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qcow2: List autoclear bit names in header

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The feature table is supposed to advertise the name of all feature
bits that we support; however, we forgot to update the table for
autoclear bits.  While at it, move the table to read-only memory in
code, and tweak the qcow2 spec to name the second autoclear bit.
Update iotests that are affected by the longer header length.

Fixes: 88ddffae
Fixes: 93c24936
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200324174233.1622067-3-eblake@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Eric Blake 2020-03-24 12:42:31 -05:00 • committed by Max Reitz
parent a951a631b9
commit bb40ebce2c
5 changed files with 26 additions and 15 deletions
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3
docs/interop/qcow2.txt
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@ -143,7 +143,8 @@ the next fields through header_length.
bit is unset, the bitmaps extension data must be
considered inconsistent.
Bit 1: If this bit is set, the external data file can
Bit 1: Raw external data bit
If this bit is set, the external data file can
be read as a consistent standalone raw image
without looking at the qcow2 metadata.