Hi to every one.
Im having an issue, similar to this guy : [RAID5] Missing superblocks after restart
Didnt want to post on these thread since is quite old.
Im creating an mdadm with (it defaults to 1.2) :
mdadm --create --verbose /dev/md3 --level=5 --raid-devices=4 /dev/sda /dev/sdb /dev/sde /dev/sdf
Then after several hours it finnish and i create the fs with mkfs, update the mdadm.conf and im able to mount the raid.
Evferything is ok, then I reboot and system cannot mount the fstab entry because md3 is not being initialized, why ? the superblocks are gone (tried several times and occasionally one of the disk still remains intact ) :
mdadm: Cannot assemble mbr metadata on /dev/sdb
root@vlsprnas-omv3:~# mdadm --examine /dev/sdf
/dev/sdf:
MBR Magic : aa55
Partition[0] : 4294967295 sectors at 1 (type ee)
root@vlsprnas-omv3:~# mdadm --examine /dev/sde
/dev/sde:
MBR Magic : aa55
Partition[0] : 4294967295 sectors at 1 (type ee)
root@vlsprnas-omv3:~# mdadm --examine /dev/sdf
/dev/sdf:
MBR Magic : aa55
Partition[0] : 4294967295 sectors at 1 (type ee)
root@vlsprnas-omv3:~# mdadm --examine /dev/sda
/dev/sda:
MBR Magic : aa55
Partition[0] : 4294967295 sectors at 1 (type ee)
Alles anzeigen
The difference with the other guy is that I have another 2 raid 1 running fine in the board (verything create from scratch ) on 2 drives :
root@vlsprnas-omv3:~# lsblk -o NAME,SIZE,FSTYPE,TYPE,MOUNTPOINT
NAME SIZE FSTYPE TYPE MOUNTPOINT
sdf 3,7T disk
└─sdf1 25G linux_raid_member part
└─md3 75G raid5
sdd 465,8G disk
├─sdd2 95,4G linux_raid_member part
│ └─md1 95,4G ext4 raid1 /
├─sdd3 76,3G linux_raid_member part
│ └─md2 76,3G ext4 raid1 /dataraid1
├─sdd1 10M part
└─sdd4 18,3G part
sdb 3,7T disk
└─sdb1 25G linux_raid_member part
└─md3 75G raid5
sde 3,7T disk
└─sde1 25G linux_raid_member part
└─md3 75G raid5
sdc 189,9G disk
├─sdc2 95,4G linux_raid_member part
│ └─md1 95,4G ext4 raid1 /
├─sdc3 76,3G linux_raid_member part
│ └─md2 76,3G ext4 raid1 /dataraid1
├─sdc1 10M part
└─sdc4 18,3G part
sda 3,7T disk
└─sda1 25G linux_raid_member part
└─md3 75G raid5
Alles anzeigen
As you can note, it is one raid 5 partition, thats because im testing, now im creating the array with partitions with type raid set instead of the full disk, wish me good luck.
If any one has any hint please help, im very stucked here.