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qcow2: Get the request alignment for encrypted images from QCryptoBlock

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This doesn't have any practical effect at the moment because the
values of BDRV_SECTOR_SIZE, QCRYPTO_BLOCK_LUKS_SECTOR_SIZE and
QCRYPTO_BLOCK_QCOW_SECTOR_SIZE are all the same (512 bytes), but
future encryption methods could have different requirements.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Alberto Garcia 2018-10-11 13:58:02 +03:00 committed by Kevin Wolf
parent 07809a7fa8
commit 6f8f015c0c
1 changed files with 1 additions and 1 deletions
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2
block/qcow2.c
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@ -1677,7 +1677,7 @@ static void qcow2_refresh_limits(BlockDriverState *bs, Error **errp)
if (bs->encrypted) {
/* Encryption works on a sector granularity */
bs->bl.request_alignment = BDRV_SECTOR_SIZE;
bs->bl.request_alignment = qcrypto_block_get_sector_size(s->crypto);
}
bs->bl.pwrite_zeroes_alignment = s->cluster_size;
bs->bl.pdiscard_alignment = s->cluster_size;