diff options
| -rw-r--r-- | hw/9pfs/virtio-9p.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/hw/9pfs/virtio-9p.c b/hw/9pfs/virtio-9p.c index f4a7026381..4b52540116 100644 --- a/hw/9pfs/virtio-9p.c +++ b/hw/9pfs/virtio-9p.c @@ -983,11 +983,16 @@ static void v9fs_attach(void *opaque) err += offset; trace_v9fs_attach_return(pdu->tag, pdu->id, qid.type, qid.version, qid.path); - s->root_fid = fid; - /* disable migration */ - error_set(&s->migration_blocker, QERR_VIRTFS_FEATURE_BLOCKS_MIGRATION, - s->ctx.fs_root ? s->ctx.fs_root : "NULL", s->tag); - migrate_add_blocker(s->migration_blocker); + /* + * disable migration if we haven't done already. + * attach could get called multiple times for the same export. + */ + if (!s->migration_blocker) { + s->root_fid = fid; + error_set(&s->migration_blocker, QERR_VIRTFS_FEATURE_BLOCKS_MIGRATION, + s->ctx.fs_root ? s->ctx.fs_root : "NULL", s->tag); + migrate_add_blocker(s->migration_blocker); + } out: put_fid(pdu, fidp); out_nofid: |