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nbd: obey FUA on reads

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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2012-04-19 11:59:11 +02:00
parent 38ceff0412
commit e25ceb76e5
1 changed files with 9 additions and 0 deletions
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9
nbd.c
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@ -842,6 +842,15 @@ static void nbd_trip(void *opaque)
case NBD_CMD_READ: case NBD_CMD_READ:
TRACE("Request type is READ"); TRACE("Request type is READ");
if (request.type & NBD_CMD_FLAG_FUA) {
ret = bdrv_co_flush(exp->bs);
if (ret < 0) {
LOG("flush failed");
reply.error = -ret;
goto error_reply;
}
}
ret = bdrv_read(exp->bs, (request.from + exp->dev_offset) / 512, ret = bdrv_read(exp->bs, (request.from + exp->dev_offset) / 512,
req->data, request.len / 512); req->data, request.len / 512);
if (ret < 0) { if (ret < 0) {