NiceMan

OK I did it! All data recovered! Recreated the RAID5 Remounted the volume Learned a lot tonight. All done... :)

mdadm --examine /dev/sd[abcdef]3/dev/sda3: Magic : a92b4efc Version : 1.2 Feature Map : 0x0 Array UUID : 4e742b3f:b0b2794c:83062d84:2833deb8 Name : NAS542:1 Creation Time : Wed Apr 26 23:28:17 2017 Raid Level : raid1 Raid Devices : 4 Avail Dev Size : 3899027456 (1859.20 GiB 1996.30 GB) Array Size : 1998784 (1952.27 MiB…

~ # cat /proc/mountsrootfs / rootfs rw 0 0/proc /proc proc rw,relatime 0 0/sys /sys sysfs rw,relatime 0 0none /proc/bus/usb usbfs rw,relatime 0 0devpts /dev/pts devpts rw,relatime,mode=600 0 0ubi5:ubi_rootfs1 /firmware/mnt/nand ubifs ro,relatime 0 0/dev/md0 /firmware/mnt/sysdisk ext4…

~ # cat /proc/partitionsmajor minor #blocks name 7 0 147456 loop0 31 0 256 mtdblock0 31 1 512 mtdblock1 31 2 256 mtdblock2 31 3 10240 mtdblock3 31 4 10240 mtdblock4 31 5 112640 mtdblock5 31 6 10240 mtdblock6 31 7 112640 mtdblock7 31 8 6144 mtdblock8 8 0 1953514584 sda 8 1 1998848 sda1 8 2 1999872 sda2 8 3 1949514752 sda3 8…

~ # cat /proc/mdstatPersonalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4]md3 : inactive sda3[5](S) 1949513728 blocks super 1.2 md2 : inactive sdb3[1](S) sdd3[3](S) 3898767360 blocks super 1.2 md1 : active raid1 sda2[0] sdd2[3] sdb2[1] 1998784 blocks super 1.2 [4/3] [UU_U] md0 : active raid1 sdc1[4](F)…

You can use it with many disks as separate disks. And if one fail, the others will be fine. Just create a volume on every disk.