diff options
Diffstat (limited to 'xlators/features/qemu-block/src/bdrv-xlator.c')
| -rw-r--r-- | xlators/features/qemu-block/src/bdrv-xlator.c | 43 |
1 files changed, 37 insertions, 6 deletions
diff --git a/xlators/features/qemu-block/src/bdrv-xlator.c b/xlators/features/qemu-block/src/bdrv-xlator.c index 145f7c79d5e..106c5977535 100644 --- a/xlators/features/qemu-block/src/bdrv-xlator.c +++ b/xlators/features/qemu-block/src/bdrv-xlator.c @@ -69,10 +69,13 @@ static int qemu_gluster_open (BlockDriverState *bs, QDict *options, int bdrv_flags) { inode_t *inode = NULL; - BDRVGlusterState *s = NULL; + BDRVGlusterState *s = bs->opaque; QemuOpts *opts = NULL; Error *local_err = NULL; const char *filename = NULL; + char gfid_str[128]; + int ret; + qb_conf_t *conf = THIS->private; opts = qemu_opts_create_nofail(&runtime_opts); qemu_opts_absorb_qdict(opts, options, &local_err); @@ -84,12 +87,40 @@ qemu_gluster_open (BlockDriverState *bs, QDict *options, int bdrv_flags) filename = qemu_opt_get(opts, "filename"); - inode = qb_inode_from_filename (filename); - if (!inode) - return -EINVAL; + /* + * gfid:<gfid> format means we're opening a backing image. + */ + ret = sscanf(filename, "gluster://gfid:%s", gfid_str); + if (ret) { + loc_t loc = {0,}; + struct iatt buf = {0,}; + uuid_t gfid; - s = bs->opaque; - s->inode = inode_ref (inode); + uuid_parse(gfid_str, gfid); + + loc.inode = inode_find(conf->root_inode->table, gfid); + if (!loc.inode) { + loc.inode = inode_new(conf->root_inode->table); + uuid_copy(loc.inode->gfid, gfid); + } + + uuid_copy(loc.gfid, loc.inode->gfid); + ret = syncop_lookup(FIRST_CHILD(THIS), &loc, NULL, &buf, NULL, + NULL); + if (ret) { + loc_wipe(&loc); + return -errno; + } + + s->inode = inode_ref(loc.inode); + loc_wipe(&loc); + } else { + inode = qb_inode_from_filename (filename); + if (!inode) + return -EINVAL; + + s->inode = inode_ref(inode); + } return 0; } |