I'm running 2.6.14.6 with CONFIG_LBD yes, with access to some pretty large AoE block devices. When I try to create a RAID1 between a couple of block devices larger than 4TB, mdadm complains with: mdadm: devices too large for RAID level 1 As long as I back the size down to 4TB or less, it will work. This is a bit confusing, because I searched through the archives and did not find much mention of max RAID size limits except for this about a 2TB maximum size for RAID5 component devices: http://marc.theaimsgroup.com/?l=linux-raid&m=112782802028969&w=2 Mdadm (1.11.0 and newer) does this maximum size check for anything higher than RAID level 0, so I would assume RAID1 and RAID5 would be the same. Apologies if this is obvious but: what is the current actual size limit for component devices in RAID levels greater than zero? -- Jeff Hardy Systems Analyst hardyjm at potsdam dot edu - 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
