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What's the right way to set up >2TB partitions for raid1 autoassembly? I don't need to boot from this but I'd like it to come up and mount automatically at boot. -- Les Mikesell lesmikesell at gmail.com

CentOS 7. I have a server with four drives. 1 is /, and the other three are in RAID5. I need to pull a drive, so I can test whether the server can read > 2TB drives. I've been googling, but don't want to screw the server up.... I think I'd like to 1. stop the RAID 2. pull a drive 3. put in a large drive, and run parted, and mkfs 4. pull the large drive 5. replace the

We're just using Linux software RAID for the first time - RAID1, and the other day, a drive failed. We have a clone machine to play with, so it's not that critical, but.... I partitioned a replacement drive. On the clone, I marked the RAID partitions on /dev/sda failed, and remove, and pulled the drive. After several iterations, I waited a minute or two, until all messages had stopped,

...A sdb: sd 0:0:0:0: [sda] Write Protect is off sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00 sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sda: sda1 sda2 sda3 sd 0:0:0:0: [sda] Attached SCSI disk sdb1 sdb2 sdb3 sd 1:0:0:0: [sdb] Attached SCSI disk dracut: Autoassembling MD Raid md: md0 stopped. md: bind<sdb1> md: bind<sda1> md: raid1 personality registered for level 1 bio: create slab <bio-1> at 1 md/raid1:md0: active with 2 out of 2 mirrors md0: detected capacity change from 0 to 2146369536 dracut: mdadm: /dev/md0 has been started with 2 driv...