On Tuesday November 23, c-d.hailfinger.kernel.2004@xxxxxxx wrote: > Hi, > > [please CC: me] > while trying to use md to overcome limitations of dm, I > stumbled upon the following problem: It is impossible to > have more than 4 partitioned md devices since mdadm will > create the 5th device with major:minor 255:0, which is > bogus. You need user-space (libc in particular) that supports the new 32bit device numbers in 2.6. I don't know which version of glibc that would be, or which distributions support it. debian/unstable (which I use) doesn't support it yet :-( You could test your distribution with mknod /tmp/test b 253 1024 ls -l /tmp/test rm /tmp/test and see if the major/minor is reported as "253, 1024" or "253, 0". If the later, you need new glibc. If the former, your userspace is up-to-date but there must be a bug in mdadm. If this is the case, let me know and I will look into it. NeilBrown - 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
