From 6f8f015c0cd9f3ea44de4d73144db98beef97e3c Mon Sep 17 00:00:00 2001
From: Alberto Garcia <berto@igalia.com>
Date: Thu, 11 Oct 2018 13:58:02 +0300
Subject: [PATCH] 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>
---
block/qcow2.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index de94b290e6..991d6ac91b 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -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;