one of our server's drive failed due to power cord issue. however i plug it back and due to less experience with "parted" i messed the whole thing.
i have 2tbx2 RAID 1 mirror and have 4x500GB partitions. even i selected the right drive by "select command" and deleted the right partition but parted did something worst though, i take it as my own mistake as i am not that experience with parted i am usually using fdisk. so the case is. i destroyed 1 partition data. and 3 are still save and accessible. though i do had a backup of the first drive that way things are still in my hand taking all the 3 partitions backup on another drive fore safe side. now the problem part is i can not re attach the fail drive partition with RAID /dev/md[2,3,4] devices. Personalities : [raid1] md1 : active (auto-read-only) raid1 sdc1[0] 488147776 blocks super 1.2 [2/1] [U_] md4 : active raid1 sdb4[0] 488670072 blocks super 1.2 [2/1] [U_] md3 : active raid1 sdb3[0] 488279928 blocks super 1.2 [2/1] [U_] md2 : active raid1 sdb2[0] 488279928 blocks super 1.2 [2/1] [U_] (parted) select /dev/sdb Using /dev/sdb (parted) print Model: ATA WDC WD20EARX-00P (scsi) Disk /dev/sdb: 2000GB Sector size (logical/physical): 512B/4096B Partition Table: gpt Number Start End Size File system Name Flags 1 1049kB 500GB 500GB primary raid 2 500GB 1000GB 500GB projects 3 1000GB 1500GB 500GB dump1 4 1500GB 2000GB 500GB dump2 root@nasbox:~# parted /dev/sdc GNU Parted 2.3 Using /dev/sdc Welcome to GNU Parted! Type 'help' to view a list of commands. (parted) print Model: ATA WDC WD20EARX-00P (scsi) Disk /dev/sdc: 2000GB Sector size (logical/physical): 512B/4096B Partition Table: gpt Number Start End Size File system Name Flags 1 2097kB 500GB 500GB a-backup 2 500GB 1000GB 500GB projects 3 1000GB 1500GB 500GB dump1 4 1500GB 2000GB 500GB dump2 please ignore partition 1 of both drives as i already messed them up. however i can not make all other remaining partition back on track as RAID. when i pass this command. root@nasbox:~# mdadm --manage /dev/md2 --add /dev/sdc2 mdadm: add new device failed for /dev/sdc2 as 2: Invalid argument i did googled but didn't found something near to my issue. please help. Thanks Myk