I''ve been testing BTRFS and by-and-large the file system runs well. The most troubling issue I''ve run into so far is the inability to consistently recover from a failed device. If I simulate a failed device and try to balance media across the remaining drives I never get a consistent result. #Sometimes I am able to delete the failed device and re-balance on the remaining drives but then the data doesn''t balance properly and is apparently lost. #Sometimes I am unable to delete the failed device and I am stuck with "Device Missing" message with unaccessible data on that drive. #Sometimes I am able to delete the failed device. Add a new device. Re-balance, but the new array won''t mount because of "wrong fs type, bad option, bad superblock on /dev/sdx". I am using the latest kernel as of 2011-04-06. I read in earlier messages that this functionality isn''t quite working yet as planned - That deleting devices really only serves to remove a ''working'' disk for use elsewhere. I don''t find a lot of feedback on this seemingly huge problem with the file system. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html