Am 24.05.2020 um 19:19 schrieb Patrick O'Callaghan:
On Sun, 2020-05-24 at 18:37 +0200, Roberto Ragusa wrote:
On 2020-05-24 13:37, Patrick O'Callaghan wrote:
sdd 8:48 0 931.5G 0 disk
└─md127 9:127 0 931.4G 0 raid1
└─md127p1 259:0 0 931.4G 0 part
sde 8:64 0 931.5G 0 disk
└─md127 9:127 0 931.4G 0 raid1
└─md127p1 259:0 0 931.4G 0 part
# mdadm --detail /dev/md127p1
/dev/md127p1:
Version : 1.2
Creation Time : Wed May 20 16:34:58 2020
Raid Level : raid1
Array Size : 976628736 (931.39 GiB 1000.07 GB)
Used Dev Size : 976630464 (931.39 GiB 1000.07 GB)
Raid Devices : 2
Total Devices : 2
Persistence : Superblock is persistent
There is something strange here.
You have created md127 as a RAID1 of sdd and sde.
Then you have md127p1, so have you partitioned your RAID?
And then you are asking details for md127p1 (which could be your filesystem),
while your RAID is instead md127.
IIRC I created the RAID1 array (which took hours), then formatted the
resulting /dev/md127 (using gparted) as a single ext4 partition.
This is an unusual configuration.
Generally you partition the disks: sdd1 sde1, then create a RAID of of them:
md127,
then you format and mount md127.
That's called partitioned RAID. Makes it easier if you need to replace
an array member.
So clearly the other way around.
You may have messed up something: maybe you have formatted both md127 and
md127p1?
I don't think so, but I guess it's possible. What I can't understand is
why everything appeared to be working before I rebooted.
Perfectly valid as a RAID setup. I am just not sure the anaconda
installer supports it. Last time I tried it (admitted with CentOS 7) I
couldn't do it that way.
I'm OK with doing it again if need be, but I don't find all this in any
way obvious.
poc
Alexander
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