I have quite the odd problem that I've never encountered before.
Setup:
OS Ubuntu 18.04
7x Shucked WD 100EMAZ Drives
Raid: mdadm software raid 6
Mobo: Supermicro MBD-X11SAE-MO
3rd pin covered up to work with Mobo's sata ports
Whenever I lose power, 2 of the 7 drives always lose the superblock and need to be rebuilt from scratch, which if I lost any drive other than the 2 that always get lost, I would lose all the data. Anyone ever encounter such odd behavior?
I purchased the drives in various different batches, but they are consistent in Model (WDC WD100EMAZ-00WJTA0) & Firmware Revision (83.H0A83), so the drives are consistent, but the difference in behavior is quite odd.
Some random thoughts I have had:
Could it be that I have just added raw block devices: e.g /dev/sd[abcdefg] instead of create partitions and adding partitions like /dev/sd[abcdefg]1 ?
Or these are 10T drives, so perhaps I need to use a GUID partitioning format instead of dos?
If I shutdown the host gracefully, everything is fine. It's only on power outages that these 2 drives are finicky.
Setup:
OS Ubuntu 18.04
7x Shucked WD 100EMAZ Drives
Raid: mdadm software raid 6
Mobo: Supermicro MBD-X11SAE-MO
3rd pin covered up to work with Mobo's sata ports
Whenever I lose power, 2 of the 7 drives always lose the superblock and need to be rebuilt from scratch, which if I lost any drive other than the 2 that always get lost, I would lose all the data. Anyone ever encounter such odd behavior?
I purchased the drives in various different batches, but they are consistent in Model (WDC WD100EMAZ-00WJTA0) & Firmware Revision (83.H0A83), so the drives are consistent, but the difference in behavior is quite odd.
Some random thoughts I have had:
Could it be that I have just added raw block devices: e.g /dev/sd[abcdefg] instead of create partitions and adding partitions like /dev/sd[abcdefg]1 ?
Or these are 10T drives, so perhaps I need to use a GUID partitioning format instead of dos?
If I shutdown the host gracefully, everything is fine. It's only on power outages that these 2 drives are finicky.