Raid says drive disconnected but it still shows up under disks so I'm confused. Not really sure when this happend it was storming last night but the server is on battery backup and that never faltered. I have 7 4tb WD Red drives.
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root@openmediavault:~# cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4] [linear] [multipath] [raid0] [raid1] [raid10]
md127 : active raid5 sdb[6] sde[7] sdc[8] sdg[3] sda[4] sdf[1]
23441323008 blocks super 1.2 level 5, 512k chunk, algorithm 2 [7/6] [UU_UUUU]
unused devices: <none>
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root@openmediavault:~# blkid
/dev/sdh1: UUID="00891412-6ed1-43cb-8460-761ebfaf9786" TYPE="ext4" PARTUUID="f9c061ab-01"
/dev/sdh3: LABEL="SSD Data" UUID="7a981dd3-4c7d-4f1c-9002-050b1a7a57e0" TYPE="ext4" PARTUUID="f9c061ab-03"
/dev/sdh5: UUID="fbfec248-cf4c-4069-9fa1-49aac24c64fa" TYPE="swap" PARTUUID="f9c061ab-05"
/dev/sdc: UUID="7a39528f-fab6-6321-dc1e-d267566f9251" UUID_SUB="83372978-ed2d-7122-5ffd-550b979ceefc" LABEL="openmediavault:Media" TYPE="linux_raid_member"
/dev/sdb: UUID="7a39528f-fab6-6321-dc1e-d267566f9251" UUID_SUB="8d952e8f-dc6c-b800-3454-9ffd5769255c" LABEL="openmediavault:Media" TYPE="linux_raid_member"
/dev/sde: UUID="7a39528f-fab6-6321-dc1e-d267566f9251" UUID_SUB="6cf55581-47cd-73d4-a16f-48ea65219772" LABEL="openmediavault:Media" TYPE="linux_raid_member"
/dev/sda: UUID="7a39528f-fab6-6321-dc1e-d267566f9251" UUID_SUB="75bdbcd6-6039-80d9-d718-adce02a77dd1" LABEL="openmediavault:Media" TYPE="linux_raid_member"
/dev/sdd: UUID="7a39528f-fab6-6321-dc1e-d267566f9251" UUID_SUB="1e0af5dd-a4c5-8732-677e-1f167ea38a4b" LABEL="openmediavault:Media" TYPE="linux_raid_member"
/dev/sdg: UUID="7a39528f-fab6-6321-dc1e-d267566f9251" UUID_SUB="2ee77675-4553-2fae-7469-bf712a401962" LABEL="openmediavault:Media" TYPE="linux_raid_member"
/dev/md127: LABEL="Media" UUID="89bc21f5-e775-476e-8a79-13667f2f6beb" TYPE="ext4"
/dev/sdf: UUID="7a39528f-fab6-6321-dc1e-d267566f9251" UUID_SUB="f5a1474f-cb09-a4a8-72c1-87b2655d31e4" LABEL="openmediavault:Media" TYPE="linux_raid_member"
root@openmediavault:~#
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root@openmediavault:~# fdisk -l | grep "Disk "
Disk /dev/sdh: 223.6 GiB, 240057409536 bytes, 468862128 sectors
Disk identifier: 0xf9c061ab
Disk /dev/sdc: 3.7 TiB, 4000787030016 bytes, 7814037168 sectors
Disk /dev/sdb: 3.7 TiB, 4000787030016 bytes, 7814037168 sectors
Disk /dev/sde: 3.7 TiB, 4000787030016 bytes, 7814037168 sectors
Disk /dev/sda: 3.7 TiB, 4000787030016 bytes, 7814037168 sectors
Disk /dev/sdd: 3.7 TiB, 4000787030016 bytes, 7814037168 sectors
Disk /dev/sdg: 3.7 TiB, 4000787030016 bytes, 7814037168 sectors
Disk /dev/sdf: 3.7 TiB, 4000787030016 bytes, 7814037168 sectors
Disk /dev/md127: 21.9 TiB, 24003914760192 bytes, 46882646016 sectors
root@openmediavault:~#
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Code
root@openmediavault:~# cat /etc/mdadm/mdadm.conf
# mdadm.conf
#
# Please refer to mdadm.conf(5) for information about this file.
#
# by default, scan all partitions (/proc/partitions) for MD superblocks.
# alternatively, specify devices to scan, using wildcards if desired.
# Note, if no DEVICE line is present, then "DEVICE partitions" is assumed.
# To avoid the auto-assembly of RAID devices a pattern that CAN'T match is
# used if no RAID devices are configured.
DEVICE partitions
# 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>
# definitions of existing MD arrays
ARRAY /dev/md127 metadata=1.2 name=openmediavault:Media UUID=7a39528f:fab66321:dc1ed267:566f9251
# instruct the monitoring daemon where to send mail alerts
MAILADDR droptopfox90@gmail.com
MAILFROM rootroot@openmediavault:~#
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