On Tue, 1 Apr 2014 07:15:47 +0800, Shilong Wang wrote: > hello, recently, i was working on btrfsck repair. i post some > patches to make btrfsck to rebuild extent tree with snapshots. > you can pull code from david latest branch and have a try with > btrfsck --init-extent-tree. Fortunately, the `btrfs balance' command solved the issue for me: http://mid.gmane.org/<8e4932bb29f743419660da1846c2363b-mfwitten@xxxxxxxxx> However, I did notice `--init-extent-tree' when trying to figure out what I might do to fix my troubles; however, I was uncertain about exactly what it would do. According to `man btrfsck': --init-csum-tree create a new CRC tree. --init-extent-tree create a new extent tree. These sound potentially destructive, so I was afraid to use them; what exactly does it mean to create a new tree? After your email, I assume each action creates a new tree that is populated from the data in the corresponding old tree. Also, you wrote: > rebuild extent tree with snapshots Do you mean to say that your patches handle the previously unhandled case in which both of the following are true? * There are snapshots in the file system. * The extent tree needs to be rebuilt. Thanks! -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
