On 10/08/2012 12:32 PM, Sebastian Riemer wrote:> Hi Neil, > > I must have overseen your answer. We want to use as less mdadm as > possible - especially for simple checking stuff. The kernel knows best. > "mdadm -D" reads the data from disk. This means additional disk access. > It is also possible that this command triggers superblock updates. > Simple checking stuff shouldn't have to use disk access. > > We are planning to use MD RAID a little bit different with e.g. 100 MD > arrays. Searching for a particular UUID in this bunch of MD devices can > be difficult without this patch. This is how the kernel represents > UUIDs. Conversion can be done in user space. > > If you like it better in the xxxxxxxx:xxxxxxxx:xxxxxxxx:xxxxxxxx format, > I can resend the patch in that format. If you are aiming for consistency, the dm driver(s) have already established a no-punctuation format for the UUID itself (punctuation separates UUID type from the UUID) within sysfs. Regards, Phil -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
