RAID-Devices
- /dev/md0
am@hadante ~ $ sudo mdadm -Q --detail /dev/md0 /dev/md0: Version : 1.2 Creation Time : Wed May 27 13:52:56 2015 Raid Level : raid5 Array Size : 1463976960 (1396.16 GiB 1499.11 GB) Used Dev Size : 487992320 (465.39 GiB 499.70 GB) Raid Devices : 4 Total Devices : 4 Persistence : Superblock is persistent Intent Bitmap : Internal Update Time : Sat Jun 10 15:26:28 2017 State : clean Active Devices : 4 Working Devices : 4 Failed Devices : 0 Spare Devices : 0 Layout : left-symmetric Chunk Size : 512K Name : archiso:0 UUID : 6d795529:03e05967:c4d50bcf:5dd604b7 Events : 3136 Number Major Minor RaidDevice State 0 8 130 0 active sync /dev/sdi2 1 8 18 1 active sync /dev/sdb2 2 8 2 2 active sync /dev/sda2 4 8 146 3 active sync /dev/sdj2
- /dev/md1
am@hadante ~ $ sudo mdadm -Q --detail /dev/md1 /dev/md1: Version : 1.2 Creation Time : Thu May 2 18:08:00 2013 Raid Level : raid5 Array Size : 8790405120 (8383.18 GiB 9001.37 GB) Used Dev Size : 2930135040 (2794.39 GiB 3000.46 GB) Raid Devices : 4 Total Devices : 4 Persistence : Superblock is persistent Update Time : Sat Jun 10 15:26:58 2017 State : clean Active Devices : 4 Working Devices : 4 Failed Devices : 0 Spare Devices : 0 Layout : left-symmetric Chunk Size : 512K Name : hadante:1 (local to host hadante) UUID : 0227c805:00c429e6:231a9f6f:168e5a4a Events : 587869 Number Major Minor RaidDevice State 7 8 64 0 active sync /dev/sde 5 8 80 1 active sync /dev/sdf 6 8 96 2 active sync /dev/sdg 4 8 112 3 active sync /dev/sdh
Order in external casing
From top to bottom:
- ST3000DM001-1ER166, Serial W501VAJY
- ST3000DM001-1CH166, Serial Z1F58T6T
- HGST HDN724040ALE640, Serial P4HU954B
- ST3000DM001-1CH166, Serial Z1F1JTDT
Slot History
- Original -> replaced by a recertified drive (Z1F2X130 – 2015/04/25) -> replaced by a defective HGST 4TB that didn’t even start up on 2017/06/09 -> replaced by another SEAGATE 3TB drive in stock the same day (W501VAJY – delivered 2016/10/18)
- Original? (no history available)
- Original -> replaced by recertified drive (W1F2L184) -> replaced by Z1F142XH on 2016/08/26 (in stock, delivered 2016/06/26), which turned out to be defective and out of warranty (returned to sender, the replacement is in slot 1 now) -> replaced by HGST 4 TB (Serial: P4HU954B) on 2016/09/03. Read the whole story here…
- Original? (no history available)
Remarks
- [2017/06/10] I’m not really sure about the history of slot 3. A previous version said that it was slot 4, but the Amazon history says otherwise.
- [2017/06/10] Despite still having a SEAGATE 3TB drive in stock I ordered a new HGST 4TB on Whitsunday 2016/06/04, delivered as promised on 2016/06/07. Unfortunately I couldn’t get my hands on it until Friday 2016/06/09, because the neighbor accepting the parcel wasn’t around when I was. Not at 3pm, 6pm nor 9pm (Wednesday and Thursday), so I took an early lunch break on Friday at about 11:15am and rode home to pick it up, yay! Much to my dismay the drive was defective. Instead of spinning up it made clicking, scratching sounds and didn’t show up in /dev, so I eventually replaced it with the 3TB SEAGATE drive, because I didn’t trust the still working, but failing drive any more. After a hard crash on Wednesday hadante kicked the (healthy) HGST drive out of the array, so I had to rebuild with the failing drive. About 24 hours later the rebuild finished, lucky me! I’m gonna return the HGST drive to the sender next week instead of voiding my warranty.
# journalctl -k | grep md1 Jun 09 15:25:31 hadante kernel: md: md1 stopped. Jun 09 15:25:31 hadante kernel: md/raid:md1: device sdf operational as raid disk 1 Jun 09 15:25:31 hadante kernel: md/raid:md1: device sdh operational as raid disk 3 Jun 09 15:25:31 hadante kernel: md/raid:md1: device sdg operational as raid disk 2 Jun 09 15:25:31 hadante kernel: md/raid:md1: raid level 5 active with 3 out of 4 devices, algorithm 2 Jun 09 15:25:31 hadante kernel: md1: detected capacity change from 0 to 9001374842880 Jun 09 15:27:46 hadante kernel: md: recovery of RAID array md1 Jun 10 13:44:01 hadante kernel: md: md1: recovery done.