Help for RAID5

aCide · 6. November 2023

Hello I need help to mount a disk on my raid 5 ...

Number Major Minor RaidDevice State

0 8 80 0 active sync /dev/sdf

1 8 144 1 active sync /dev/sdj

2 8 112 2 active sync /dev/sdh

3 8 0 3 active sync /dev/sda

4 8 32 4 active sync /dev/sdc

5 8 16 - spare /dev/sdb <---------------------------------

my mistake :

root@:~# mdadm --stop /dev/md0

mdadm: Cannot get exclusive access to /dev/md1:Perhaps a running process, mounted filesystem or active volume group?

root@:~# mdadm -AfR /dev/md1 /dev/sdb

mdadm: /dev/sdb is busy - skipping

I cut off all my SMB services etc...

same problem.

if you have an idea I don't understand the subject well enough, thank you in advance.

geaves · 7. November 2023

I'm sorry but your post is a little confusing, post the output of the following using a code box this symbol </> for each command;

cat /proc/mdstat

blkid

mdadm --detail --scan --verbose

aCide · 7. November 2023

Hello, sorry for my not very clear post.

I have 3 raid and md1 is in question

Code

root@apollon:~# mdadm --detail /dev/md1
/dev/md1:
           Version : 1.2
     Creation Time : Tue Apr 20 23:13:17 2021
        Raid Level : raid5
        Array Size : 15627558912 (14903.60 GiB 16002.62 GB)
     Used Dev Size : 3906889728 (3725.90 GiB 4000.66 GB)
      Raid Devices : 5
     Total Devices : 6
       Persistence : Superblock is persistent

     Intent Bitmap : Internal

       Update Time : Tue Nov  7 07:38:54 2023
             State : clean
    Active Devices : 5
   Working Devices : 6
    Failed Devices : 0
     Spare Devices : 1

            Layout : left-symmetric
        Chunk Size : 512K

Consistency Policy : bitmap

              Name : APOLLON.local:1
              UUID : 5dc73a96:4586dcae:e96d51ee:9cd19b18
            Events : 39369

    Number   Major   Minor   RaidDevice State
       0       8       16        0      active sync   /dev/sdb
       1       8       80        1      active sync   /dev/sdf
       2       8       48        2      active sync   /dev/sdd
       3       8       96        3      active sync   /dev/sdg
       4       8      128        4      active sync   /dev/sdi

       5       8      112        -      spare   /dev/sdh

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Code

root@apollon:~# cat /proc/mdstat
Personalities : [raid1] [raid6] [raid5] [raid4] [linear] [multipath] [raid0] [ra                                                                                                                                                             id10]
md0 : active raid5 sdn[2] sdm[3] sdl[0] sdk[1] sdj[5]
      7813529600 blocks super 1.2 level 5, 512k chunk, algorithm 2 [5/5] [UUUUU]
      bitmap: 0/15 pages [0KB], 65536KB chunk

md1 : active raid5 sdd[2] sdb[0] sdf[1] sdh[5](S) sdi[4] sdg[3]
      15627558912 blocks super 1.2 level 5, 512k chunk, algorithm 2 [5/5] [UUUUU                                                                                                                                                             ]
      bitmap: 0/30 pages [0KB], 65536KB chunk

md2 : active raid1 sdc[1] sde[0]
      1953382464 blocks super 1.2 [2/2] [UU]
      bitmap: 0/15 pages [0KB], 65536KB chun

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Code

root@apollon:~# blkid
/dev/sda1: UUID="7ead985e-fc4e-42fa-896b-e8e0ed0766b2" BLOCK_SIZE="4096" TYPE="ext4" PARTUUID="4649face-01"
/dev/sda5: UUID="dcffd033-a347-4855-b8eb-d0f2f66f7b57" TYPE="swap" PARTUUID="4649face-05"
/dev/sdg: UUID="5dc73a96-4586-dcae-e96d-51ee9cd19b18" UUID_SUB="301da6a3-a62a-0e12-559f-ba6ffb12528a" LABEL="APOLLON.local:1" TYPE="linux_raid_member"
/dev/sdc: UUID="9b6ce6da-c3c6-d522-30ed-cc4d1dc7d5c8" UUID_SUB="0b19a1fd-5537-f488-6fb1-e7f6f63dda3e" LABEL="APOLLON.local:2" TYPE="linux_raid_member"
/dev/sdd: UUID="5dc73a96-4586-dcae-e96d-51ee9cd19b18" UUID_SUB="ea351b03-aa89-57db-9bd5-5148f370af03" LABEL="APOLLON.local:1" TYPE="linux_raid_member"
/dev/sde: UUID="9b6ce6da-c3c6-d522-30ed-cc4d1dc7d5c8" UUID_SUB="9b952700-f4fe-98d9-30d1-02b585af6930" LABEL="APOLLON.local:2" TYPE="linux_raid_member"
/dev/sdf: UUID="5dc73a96-4586-dcae-e96d-51ee9cd19b18" UUID_SUB="aa314cd9-2338-b2c2-dd03-586459bec9d6" LABEL="APOLLON.local:1" TYPE="linux_raid_member"
/dev/sdb: UUID="5dc73a96-4586-dcae-e96d-51ee9cd19b18" UUID_SUB="82cdb2c9-07ed-7a76-5c44-791385560a0a" LABEL="APOLLON.local:1" TYPE="linux_raid_member"
/dev/md2: LABEL="RAID0" UUID="6afa8a32-16be-43a7-a04a-690f0ce4b52a" BLOCK_SIZE="4096" TYPE="ext4"
/dev/md1: LABEL="RAID4" UUID="0e0e8243-67d6-4247-b70e-fd01f75e481c" BLOCK_SIZE="4096" TYPE="ext4"
/dev/sdi: UUID="5dc73a96-4586-dcae-e96d-51ee9cd19b18" UUID_SUB="22398a51-e596-509e-ab88-8a339eaad12b" LABEL="APOLLON.local:1" TYPE="linux_raid_member"
/dev/sdj: UUID="77fbd996-488f-c11b-2543-7c9ca3d813f4" UUID_SUB="42aa487c-a066-8eda-0087-6b7946df727e" LABEL="APOLLON.local:0" TYPE="linux_raid_member"
/dev/sdh: UUID="5dc73a96-4586-dcae-e96d-51ee9cd19b18" UUID_SUB="ab098aa2-caf8-075d-b02b-fb19fd1b2157" LABEL="APOLLON.local:1" TYPE="linux_raid_member"
/dev/md0: LABEL="RAID2" UUID="337dc80c-2380-4560-8043-db865934b7eb" BLOCK_SIZE="4096" TYPE="ext4"
/dev/sdn: UUID="77fbd996-488f-c11b-2543-7c9ca3d813f4" UUID_SUB="71a53c71-b016-eb98-9fb5-0b248392ce91" LABEL="APOLLON.local:0" TYPE="linux_raid_member"
/dev/sdl: UUID="77fbd996-488f-c11b-2543-7c9ca3d813f4" UUID_SUB="cb710606-6ab9-a4fc-5087-43985a0577f3" LABEL="APOLLON.local:0" TYPE="linux_raid_member"
/dev/sdk: UUID="77fbd996-488f-c11b-2543-7c9ca3d813f4" UUID_SUB="55fee9ca-cde8-963f-185f-f08b1425d819" LABEL="APOLLON.local:0" TYPE="linux_raid_member"
/dev/sdm: UUID="77fbd996-488f-c11b-2543-7c9ca3d813f4" UUID_SUB="737f6b3c-b270-d6c5-64d6-fa01737ad083" LABEL="APOLLON.local:0" TYPE="linux_raid_member"

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Code

root@apollon:~# mdadm --detail --scan --verbose
ARRAY /dev/md2 level=raid1 num-devices=2 metadata=1.2 name=APOLLON.local:2 UUID=9b6ce6da:c3c6d522:30edcc4d:1dc7d5c8
   devices=/dev/sdc,/dev/sde
ARRAY /dev/md1 level=raid5 num-devices=5 metadata=1.2 spares=1 name=APOLLON.local:1 UUID=5dc73a96:4586dcae:e96d51ee:9cd19b18
   devices=/dev/sdb,/dev/sdd,/dev/sdf,/dev/sdg,/dev/sdh,/dev/sdi
ARRAY /dev/md0 level=raid5 num-devices=5 metadata=1.2 name=APOLLON.local:0 UUID=77fbd996:488fc11b:25437c9c:a3d813f4
   devices=/dev/sdj,/dev/sdk,/dev/sdl,/dev/sdm,/dev/sdn

geaves · 7. November 2023

Ok, looking at the output you have a spare in /dev/md1 that drive is dev/sdh whereas in your first post the drive was /dev/sdb that would suggest the system has been rebooted.

If you are looking at adding /dev/sdh to the array /dev/md1 as a working data drive you can't until it's actually failed then removed from the array so it's no longer an active spare.

TBH this must have been added manually, I don't think omv allows a spare to be added using the GUI

In raid management you can remove a drive from an array, select the array and from the menu click remove, if the spare shows in there then is can be removed from the array, if it doesn't it's the command line

Please set your omv version in your first post

aCide · 7. November 2023

I tried to add it in the GUI to extend my volume but it remains as spare.

Code

================================================================================
= OS/Debian information
================================================================================
No LSB modules are available.
Distributor ID: Debian
Description: Debian GNU/Linux 11 (bullseye)
Release: 11
Codename: bullseye

================================================================================
= openmediavault information
================================================================================
Release: 6.9.0-1
Codename: Shaitan

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geaves · 7. November 2023

Zitat von aCide

I tried to add it in the GUI to extend my volume but it remains as spare

to add it to an array you would grow the array, does the drive show in the list of drives if click remove

aCide · 7. November 2023

No I don't see my array only in detail.

I can't select it and I have no option in the GUI to add it to my raid.

geaves · 7. November 2023

Zitat von aCide

No I don't see my array only in detail.

Post an image of raid management

Help for RAID5

geaves 7. November 2023

geaves 7. November 2023

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