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cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md127 : inactive sdb[1] sda[4](S) sdd[3]
2929894536 blocks super 1.2
unused devices: <none>
BLKID
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BLKID
/dev/sdc: UUID="79d94d6c-7030-af53-7c7b-1956c4564987" UUID_SUB="5366aea8-9876-f78d-a23e-99e6ad6fea31" LABEL="NAS:Datengrab" TYPE="linux_raid_member"
/dev/sdb: UUID="79d94d6c-7030-af53-7c7b-1956c4564987" UUID_SUB="175ea7f3-8e75-caaa-a728-75435266c481" LABEL="NAS:Datengrab" TYPE="linux_raid_member"
/dev/sda: UUID="79d94d6c-7030-af53-7c7b-1956c4564987" UUID_SUB="5c0b0f88-e883-6acd-ce5d-bb2b95a4bb9b" LABEL="NAS:Datengrab" TYPE="linux_raid_member"
/dev/sdd: UUID="79d94d6c-7030-af53-7c7b-1956c4564987" UUID_SUB="cec25e6e-e6f8-bc06-f4c7-d33148c0f9bd" LABEL="NAS:Datengrab" TYPE="linux_raid_member"
/dev/sde1: UUID="5e284973-7730-436e-aeb5-491c3cfe6446" TYPE="ext4"
/dev/sde5: UUID="0f12fb13-59f7-456c-a1e7-628b8f4375a2" TYPE="swap"
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fdisk -l | grep "Disk "
Disk /dev/sda doesn't contain a valid partition table
Disk /dev/sdc doesn't contain a valid partition table
Disk /dev/sdd doesn't contain a valid partition table
Disk /dev/sdb doesn't contain a valid partition table
Disk /dev/sde: 31.5 GB, 31488000000 bytes
Disk identifier: 0x000b98c2
Disk /dev/sda: 1000.2 GB, 1000204886016 bytes
Disk identifier: 0x00000000
Disk /dev/sdc: 1000.2 GB, 1000204886016 bytes
Disk identifier: 0x00000000
Disk /dev/sdd: 1000.2 GB, 1000204886016 bytes
Disk identifier: 0x00000000
Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes
Disk identifier: 0x00000000
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cat /etc/mdadm/mdadm.conf
# mdadm.conf
#
# Please refer to mdadm.conf(5) for information about this file.
#
# by default (built-in), scan all partitions (/proc/partitions) and all
# containers for MD superblocks. alternatively, specify devices to scan, using
# wildcards if desired.
#DEVICE partitions containers
# auto-create devices with Debian standard permissions
CREATE owner=root group=disk mode=0660 auto=yes
# automatically tag new arrays as belonging to the local system
HOMEHOST <system>
# instruct the monitoring daemon where to send mail alerts
MAILADDR root
# definitions of existing MD arrays
# This file was auto-generated on Mon, 29 Jun 2015 06:41:20 +0000
# by mkconf 3.2.5-5
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mdadm --detail --scan --verbose
mdadm: cannot open /dev/md/Datengrab: No such file or directory
That is the info I can give you all. My Raid has been vanished after it got to rebuild itself. In the status before the reboot was the message "clean, failed".
Can I get the date somehow back? It is also strange that sdb sda sdd are there the sdb isn't. Maybe that could be the faulty drive?