btrfs-progs: convert: improve error handling in do_rollback

Handle transaction errors.

Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/btrfs-convert.c b/btrfs-convert.c
index ef9ba90..936d468 100644 (file)
--- a/btrfs-convert.c
+++ b/btrfs-convert.c
@@ -2822,7 +2822,10 @@ next_extent:
        /* force no allocation from system block group */
        root->fs_info->system_allocs = -1;
        trans = btrfs_start_transaction(root, 1);
-       BUG_ON(!trans);
+       if (!trans) {
+               error("unable to start transaction");
+               goto fail;
+       }
        /*
         * recow the whole chunk tree, this will remove all chunk tree blocks
         * from system block group
@@ -2871,7 +2874,10 @@ next_extent:
        }
 
        ret = btrfs_commit_transaction(trans, root);
-       BUG_ON(ret);
+       if (ret) {
+               error("transaction commit failed: %d", ret);
+               goto fail;
+       }
 
        ret = close_ctree(root);
        if (ret) {