HELP : can't add a spare replace to a failed disk !

  • Hi, I had a faluty /dev/sdc disk. Removed it and added a new one, now I can resync my raid 6.


    Code
    root@Zetta:~# mdadm --assemble --scan
    mdadm: device 6 in /dev/md/zetta:0 has wrong state in superblock, but /dev/sdc seems ok
    mdadm: /dev/md/zetta:0 assembled from 5 drives and 1 spare - not enough to start the array while not clean - consider --force.

    Nothing strange in cat/md0 o r blkid or fdisk



    EDIT here is maybe why ?


    Hi,


    quite a noob and little bit lost here.


    I had a WD 1,5 To which is faulty (/dev/sdc). Changed it with a WD 2 To


    For this I did


    Code
    mdadm --manage /dev/md0 --fail /dev/sdcmdadm --manage /dev/md0 --remove /dev/sdc


    Power off removed the old one, adding the old one.


    Whatever I try (add re-add) I can't add the new one treated as spare. Suspect that it's because of a larger one ? What should I do ? (I'm under open media vault a nas system base on debian)


    Thanks a lot !!!!


    Here are my output :

    Code
    root@Zetta:~# cat /proc/mdstatPersonalities : [raid6] [raid5] [raid4]md0 : inactive sdf[0] sdc[7](S) sdg[6] sdb[4] sde[3] sda[2]10255693264 blocks super 1.2unused devices: <none>


    Code
    root@Zetta:~# mdadm --detail /dev/md0/dev/md0:Version : 1.2Creation Time : Sat Aug 31 01:10:06 2013Raid Level : raid6Used Dev Size : 1465137152 (1397.26 GiB 1500.30 GB)Raid Devices : 6Total Devices : 6Persistence : Superblock is persistentUpdate Time : Fri Jun 23 15:43:33 2017State : active, degraded, Not StartedActive Devices : 5Working Devices : 6Failed Devices : 0Spare Devices : 1Layout : left-symmetricChunk Size : 512KName : zetta:0UUID : 96b0e7b7:83aa203f:1545031b:43caaa85Events : 54841Number   Major   Minor   RaidDevice State0       8       80        0      active sync   /dev/sdf1       0        0        1      removed2       8        0        2      active sync   /dev/sda3       8       64        3      active sync   /dev/sde4       8       16        4      active sync   /dev/sdb6       8       96        5      active sync   /dev/sdg7       8       32        -      spare   /dev/sdc


    Code
    root@Zetta:~# fdisk -lDisk /dev/sda: 1500.3 GB, 1500301910016 bytes255 heads, 63 sectors/track, 182401 cylinders, total 2930277168 sectorsUnits = sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk identifier: 0x00000000Disk /dev/sda doesn't contain a valid partition tableDisk /dev/sdb: 2000.4 GB, 2000398934016 bytes255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectorsUnits = sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 4096 bytesI/O size (minimum/optimal): 4096 bytes / 4096 bytesDisk identifier: 0x00000000Disk /dev/sdb doesn't contain a valid partition tableDisk /dev/sdc: 2000.4 GB, 2000398934016 bytes255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectorsUnits = sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 4096 bytesI/O size (minimum/optimal): 4096 bytes / 4096 bytesDisk identifier: 0x00000000Disk /dev/sdc doesn't contain a valid partition tableDisk /dev/sdd: 100.0 GB, 100030242816 bytes255 heads, 63 sectors/track, 12161 cylinders, total 195371568 sectorsUnits = sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk identifier: 0x0008101cDevice Boot      Start         End      Blocks   Id  System/dev/sdd1   *        2048   187367423    93682688   83  Linux/dev/sdd2       187369470   195371007     4000769    5  Extended/dev/sdd5       187369472   195371007     4000768   82  Linux swap / SolarisDisk /dev/sde: 1500.3 GB, 1500301910016 bytes255 heads, 63 sectors/track, 182401 cylinders, total 2930277168 sectorsUnits = sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 4096 bytesI/O size (minimum/optimal): 4096 bytes / 4096 bytesDisk identifier: 0x00000000Disk /dev/sde doesn't contain a valid partition tableDisk /dev/sdf: 1500.3 GB, 1500301910016 bytes255 heads, 63 sectors/track, 182401 cylinders, total 2930277168 sectorsUnits = sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 4096 bytesI/O size (minimum/optimal): 4096 bytes / 4096 bytesDisk identifier: 0x00000000Disk /dev/sdf doesn't contain a valid partition tableDisk /dev/sdg: 2000.4 GB, 2000398934016 bytes255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectorsUnits = sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 4096 bytesI/O size (minimum/optimal): 4096 bytes / 4096 bytesDisk identifier: 0x00000000Disk /dev/sdg doesn't contain a valid partition table



    Code
    root@Zetta:~# blkid/dev/sda: UUID="96b0e7b7-83aa-203f-1545-031b43caaa85" UUID_SUB="70983681-b5c2-9f70-1801-948b1b7c97d1" LABEL="zetta:0" TYPE="linux_raid_member"/dev/sdb: UUID="96b0e7b7-83aa-203f-1545-031b43caaa85" UUID_SUB="66843575-1a9c-30a6-8172-29f3ded468dc" LABEL="zetta:0" TYPE="linux_raid_member"/dev/sde: UUID="96b0e7b7-83aa-203f-1545-031b43caaa85" UUID_SUB="ee7eab8f-dc90-e3be-146d-a4e09d104418" LABEL="zetta:0" TYPE="linux_raid_member"/dev/sdf: UUID="96b0e7b7-83aa-203f-1545-031b43caaa85" UUID_SUB="b2460066-00b1-5070-cfe3-7ac67aae96c1" LABEL="zetta:0" TYPE="linux_raid_member"/dev/sdc: UUID="96b0e7b7-83aa-203f-1545-031b43caaa85" UUID_SUB="06bd9fd3-7b1a-b0e0-b9f0-029882f39624" LABEL="zetta:0" TYPE="linux_raid_member"/dev/sdd1: UUID="b364f189-c9af-4774-92ba-a49307966cf7" TYPE="ext4"/dev/sdd5: UUID="c78b6a64-1caa-4290-bc1a-eebe67731ca5" TYPE="swap"/dev/sdg: UUID="96b0e7b7-83aa-203f-1545-031b43caaa85" UUID_SUB="440f9a88-1d42-020c-ba4d-d303afb76c7c" LABEL="zetta:0" TYPE="linux_raid_member"

    Gigabyte GA-H87M-HD3, Pentium G3220, 4 GO DDR3, 6 x 2 To raid 6, 2.5' 100 Go for system
    Donator because OMV deserves it (20€)

    Einmal editiert, zuletzt von hubertes ()

    • Offizieller Beitrag

    That output is really hard to look at without the linefeeds...


    DId you try adding the force flag like it recommended? I would stop the array and re-assemble with the force flag.

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  • Hi, Yes I tried this after few days of zero block the sdc, trying to assemble...


    --force assemble, then add sdc, synched and now everything "seems" ok.


    But I think I have wrong offset, what should I do now ?


    Code
    md0 : active raid6 sdf[0] sdg[6] sdb[4] sde[3] sda[2] sdc[7]
          5860548608 blocks super 1.2 level 6, 512k chunk, algorithm 2 [6/6] [UUUUUU]




    Code
    /dev/sda: UUID="96b0e7b7-83aa-203f-1545-031b43caaa85" UUID_SUB="70983681-b5c2-9f70-1801-948b1b7c97d1" LABEL="zetta:0" TYPE="linux_raid_member"
    /dev/sdb: UUID="96b0e7b7-83aa-203f-1545-031b43caaa85" UUID_SUB="66843575-1a9c-30a6-8172-29f3ded468dc" LABEL="zetta:0" TYPE="linux_raid_member"
    /dev/sde: UUID="96b0e7b7-83aa-203f-1545-031b43caaa85" UUID_SUB="ee7eab8f-dc90-e3be-146d-a4e09d104418" LABEL="zetta:0" TYPE="linux_raid_member"
    /dev/sdf: UUID="96b0e7b7-83aa-203f-1545-031b43caaa85" UUID_SUB="b2460066-00b1-5070-cfe3-7ac67aae96c1" LABEL="zetta:0" TYPE="linux_raid_member"
    /dev/sdd1: UUID="b364f189-c9af-4774-92ba-a49307966cf7" TYPE="ext4"
    /dev/sdd5: UUID="c78b6a64-1caa-4290-bc1a-eebe67731ca5" TYPE="swap"
    /dev/sdg: UUID="96b0e7b7-83aa-203f-1545-031b43caaa85" UUID_SUB="440f9a88-1d42-020c-ba4d-d303afb76c7c" LABEL="zetta:0" TYPE="linux_raid_member"
    /dev/sdc: UUID="96b0e7b7-83aa-203f-1545-031b43caaa85" UUID_SUB="ce05af8c-7da1-c0a7-0a07-c10b0b154735" LABEL="zetta:0" TYPE="linux_raid_member"
    /dev/md0: LABEL="ZettaFiles" UUID="76c7546c-5ae6-4884-ac9f-3ecda0f473bc" TYPE="ext4"

    Gigabyte GA-H87M-HD3, Pentium G3220, 4 GO DDR3, 6 x 2 To raid 6, 2.5' 100 Go for system
    Donator because OMV deserves it (20€)

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