diff options
| -rw-r--r-- | block/quorum.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/block/quorum.c b/block/quorum.c index 4beee96ffa..c6ea862132 100644 --- a/block/quorum.c +++ b/block/quorum.c @@ -595,12 +595,38 @@ static BlockDriverAIOCB *quorum_aio_writev(BlockDriverState *bs, return &acb->common; } +static int64_t quorum_getlength(BlockDriverState *bs) +{ + BDRVQuorumState *s = bs->opaque; + int64_t result; + int i; + + /* check that all file have the same length */ + result = bdrv_getlength(s->bs[0]); + if (result < 0) { + return result; + } + for (i = 1; i < s->num_children; i++) { + int64_t value = bdrv_getlength(s->bs[i]); + if (value < 0) { + return value; + } + if (value != result) { + return -EIO; + } + } + + return result; +} + static BlockDriver bdrv_quorum = { .format_name = "quorum", .protocol_name = "quorum", .instance_size = sizeof(BDRVQuorumState), + .bdrv_getlength = quorum_getlength, + .bdrv_aio_readv = quorum_aio_readv, .bdrv_aio_writev = quorum_aio_writev, }; |