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Device missing from mdadm raid, but it exists, and looks fine?


How do I get mdadm to auto assemble my raid array?mdadm raid5 failure. set wrong drive to faulty by accidentMissing 2 Disk out of software RAID 5mdadm Stuck at rebuilding sparemdadm isn't rebuilding the arraymdadm: drive replacement shows up as spare and refuses to syncSoftware RAID 1 does not extend on two new additional drivesHow to fix my broken raid10 arraymdadm RAID6, recover 2 disk failure during reshapeJBOD Failed to assemble after middle device Failed













0















I have raid 5 over 4 devices: sda10 sdh10 sdi10 sdf10. All these devices are available, and smart doesn't show errors (sdf was, but i replaced it with new disk, resynced, but then current situation showed).



In /proc/mdstat the array looks:



md19 : inactive sdh10[2](S) sdi10[4](S) sdf10[5](S)
1171482624 blocks super 1.2


As you can see sda10 is missing. But, according to --query, it should be ok:



=# mdadm --query --examine /dev/sda10
/dev/sda10:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : 9216999b:8dab944b:564530eb:4a61e078
Name : blob:19 (local to host blob)
Creation Time : Sat Jan 21 21:05:44 2017
Raid Level : raid5
Raid Devices : 4

Avail Dev Size : 780988416 (372.40 GiB 399.87 GB)
Array Size : 1171482624 (1117.21 GiB 1199.60 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262056 sectors, after=0 sectors
State : clean
Device UUID : 8fdf8a46:4a84989c:e20fb280:c38053ea

Internal Bitmap : 8 sectors from superblock
Update Time : Fri Mar 15 01:09:45 2019
Bad Block Log : 512 entries available at offset 72 sectors
Checksum : b72fe223 - correct
Events : 1848

Layout : left-symmetric
Chunk Size : 512K

Device Role : Active device 0
Array State : AAAA ('A' == active, '.' == missing, 'R' == replacing)


On another device in the array state looks different:



=# mdadm --query --examine /dev/sdh10
/dev/sdh10:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : 9216999b:8dab944b:564530eb:4a61e078
Name : blob:19 (local to host blob)
Creation Time : Sat Jan 21 21:05:44 2017
Raid Level : raid5
Raid Devices : 4

Avail Dev Size : 780988416 (372.40 GiB 399.87 GB)
Array Size : 1171482624 (1117.21 GiB 1199.60 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262056 sectors, after=0 sectors
State : clean
Device UUID : a6b44214:e50eb531:dc76d0f6:867db6ec

Internal Bitmap : 8 sectors from superblock
Update Time : Fri Mar 15 01:14:45 2019
Bad Block Log : 512 entries available at offset 72 sectors
Checksum : 9284b6cb - correct
Events : 5956

Layout : left-symmetric
Chunk Size : 512K

Device Role : Active device 2
Array State : ..AA ('A' == active, '.' == missing, 'R' == replacing)


I tried stopping the array, and assambling with --scan, or with manually providing device names, but to no avail.



I am sure, for 100%, that data on sda10, sdh10 and sdi10 is ok. sdf10 is new disk, so it can be resynced.



Is there any way I could repair this raid?









share



























    0















    I have raid 5 over 4 devices: sda10 sdh10 sdi10 sdf10. All these devices are available, and smart doesn't show errors (sdf was, but i replaced it with new disk, resynced, but then current situation showed).



    In /proc/mdstat the array looks:



    md19 : inactive sdh10[2](S) sdi10[4](S) sdf10[5](S)
    1171482624 blocks super 1.2


    As you can see sda10 is missing. But, according to --query, it should be ok:



    =# mdadm --query --examine /dev/sda10
    /dev/sda10:
    Magic : a92b4efc
    Version : 1.2
    Feature Map : 0x1
    Array UUID : 9216999b:8dab944b:564530eb:4a61e078
    Name : blob:19 (local to host blob)
    Creation Time : Sat Jan 21 21:05:44 2017
    Raid Level : raid5
    Raid Devices : 4

    Avail Dev Size : 780988416 (372.40 GiB 399.87 GB)
    Array Size : 1171482624 (1117.21 GiB 1199.60 GB)
    Data Offset : 262144 sectors
    Super Offset : 8 sectors
    Unused Space : before=262056 sectors, after=0 sectors
    State : clean
    Device UUID : 8fdf8a46:4a84989c:e20fb280:c38053ea

    Internal Bitmap : 8 sectors from superblock
    Update Time : Fri Mar 15 01:09:45 2019
    Bad Block Log : 512 entries available at offset 72 sectors
    Checksum : b72fe223 - correct
    Events : 1848

    Layout : left-symmetric
    Chunk Size : 512K

    Device Role : Active device 0
    Array State : AAAA ('A' == active, '.' == missing, 'R' == replacing)


    On another device in the array state looks different:



    =# mdadm --query --examine /dev/sdh10
    /dev/sdh10:
    Magic : a92b4efc
    Version : 1.2
    Feature Map : 0x1
    Array UUID : 9216999b:8dab944b:564530eb:4a61e078
    Name : blob:19 (local to host blob)
    Creation Time : Sat Jan 21 21:05:44 2017
    Raid Level : raid5
    Raid Devices : 4

    Avail Dev Size : 780988416 (372.40 GiB 399.87 GB)
    Array Size : 1171482624 (1117.21 GiB 1199.60 GB)
    Data Offset : 262144 sectors
    Super Offset : 8 sectors
    Unused Space : before=262056 sectors, after=0 sectors
    State : clean
    Device UUID : a6b44214:e50eb531:dc76d0f6:867db6ec

    Internal Bitmap : 8 sectors from superblock
    Update Time : Fri Mar 15 01:14:45 2019
    Bad Block Log : 512 entries available at offset 72 sectors
    Checksum : 9284b6cb - correct
    Events : 5956

    Layout : left-symmetric
    Chunk Size : 512K

    Device Role : Active device 2
    Array State : ..AA ('A' == active, '.' == missing, 'R' == replacing)


    I tried stopping the array, and assambling with --scan, or with manually providing device names, but to no avail.



    I am sure, for 100%, that data on sda10, sdh10 and sdi10 is ok. sdf10 is new disk, so it can be resynced.



    Is there any way I could repair this raid?









    share

























      0












      0








      0








      I have raid 5 over 4 devices: sda10 sdh10 sdi10 sdf10. All these devices are available, and smart doesn't show errors (sdf was, but i replaced it with new disk, resynced, but then current situation showed).



      In /proc/mdstat the array looks:



      md19 : inactive sdh10[2](S) sdi10[4](S) sdf10[5](S)
      1171482624 blocks super 1.2


      As you can see sda10 is missing. But, according to --query, it should be ok:



      =# mdadm --query --examine /dev/sda10
      /dev/sda10:
      Magic : a92b4efc
      Version : 1.2
      Feature Map : 0x1
      Array UUID : 9216999b:8dab944b:564530eb:4a61e078
      Name : blob:19 (local to host blob)
      Creation Time : Sat Jan 21 21:05:44 2017
      Raid Level : raid5
      Raid Devices : 4

      Avail Dev Size : 780988416 (372.40 GiB 399.87 GB)
      Array Size : 1171482624 (1117.21 GiB 1199.60 GB)
      Data Offset : 262144 sectors
      Super Offset : 8 sectors
      Unused Space : before=262056 sectors, after=0 sectors
      State : clean
      Device UUID : 8fdf8a46:4a84989c:e20fb280:c38053ea

      Internal Bitmap : 8 sectors from superblock
      Update Time : Fri Mar 15 01:09:45 2019
      Bad Block Log : 512 entries available at offset 72 sectors
      Checksum : b72fe223 - correct
      Events : 1848

      Layout : left-symmetric
      Chunk Size : 512K

      Device Role : Active device 0
      Array State : AAAA ('A' == active, '.' == missing, 'R' == replacing)


      On another device in the array state looks different:



      =# mdadm --query --examine /dev/sdh10
      /dev/sdh10:
      Magic : a92b4efc
      Version : 1.2
      Feature Map : 0x1
      Array UUID : 9216999b:8dab944b:564530eb:4a61e078
      Name : blob:19 (local to host blob)
      Creation Time : Sat Jan 21 21:05:44 2017
      Raid Level : raid5
      Raid Devices : 4

      Avail Dev Size : 780988416 (372.40 GiB 399.87 GB)
      Array Size : 1171482624 (1117.21 GiB 1199.60 GB)
      Data Offset : 262144 sectors
      Super Offset : 8 sectors
      Unused Space : before=262056 sectors, after=0 sectors
      State : clean
      Device UUID : a6b44214:e50eb531:dc76d0f6:867db6ec

      Internal Bitmap : 8 sectors from superblock
      Update Time : Fri Mar 15 01:14:45 2019
      Bad Block Log : 512 entries available at offset 72 sectors
      Checksum : 9284b6cb - correct
      Events : 5956

      Layout : left-symmetric
      Chunk Size : 512K

      Device Role : Active device 2
      Array State : ..AA ('A' == active, '.' == missing, 'R' == replacing)


      I tried stopping the array, and assambling with --scan, or with manually providing device names, but to no avail.



      I am sure, for 100%, that data on sda10, sdh10 and sdi10 is ok. sdf10 is new disk, so it can be resynced.



      Is there any way I could repair this raid?









      share














      I have raid 5 over 4 devices: sda10 sdh10 sdi10 sdf10. All these devices are available, and smart doesn't show errors (sdf was, but i replaced it with new disk, resynced, but then current situation showed).



      In /proc/mdstat the array looks:



      md19 : inactive sdh10[2](S) sdi10[4](S) sdf10[5](S)
      1171482624 blocks super 1.2


      As you can see sda10 is missing. But, according to --query, it should be ok:



      =# mdadm --query --examine /dev/sda10
      /dev/sda10:
      Magic : a92b4efc
      Version : 1.2
      Feature Map : 0x1
      Array UUID : 9216999b:8dab944b:564530eb:4a61e078
      Name : blob:19 (local to host blob)
      Creation Time : Sat Jan 21 21:05:44 2017
      Raid Level : raid5
      Raid Devices : 4

      Avail Dev Size : 780988416 (372.40 GiB 399.87 GB)
      Array Size : 1171482624 (1117.21 GiB 1199.60 GB)
      Data Offset : 262144 sectors
      Super Offset : 8 sectors
      Unused Space : before=262056 sectors, after=0 sectors
      State : clean
      Device UUID : 8fdf8a46:4a84989c:e20fb280:c38053ea

      Internal Bitmap : 8 sectors from superblock
      Update Time : Fri Mar 15 01:09:45 2019
      Bad Block Log : 512 entries available at offset 72 sectors
      Checksum : b72fe223 - correct
      Events : 1848

      Layout : left-symmetric
      Chunk Size : 512K

      Device Role : Active device 0
      Array State : AAAA ('A' == active, '.' == missing, 'R' == replacing)


      On another device in the array state looks different:



      =# mdadm --query --examine /dev/sdh10
      /dev/sdh10:
      Magic : a92b4efc
      Version : 1.2
      Feature Map : 0x1
      Array UUID : 9216999b:8dab944b:564530eb:4a61e078
      Name : blob:19 (local to host blob)
      Creation Time : Sat Jan 21 21:05:44 2017
      Raid Level : raid5
      Raid Devices : 4

      Avail Dev Size : 780988416 (372.40 GiB 399.87 GB)
      Array Size : 1171482624 (1117.21 GiB 1199.60 GB)
      Data Offset : 262144 sectors
      Super Offset : 8 sectors
      Unused Space : before=262056 sectors, after=0 sectors
      State : clean
      Device UUID : a6b44214:e50eb531:dc76d0f6:867db6ec

      Internal Bitmap : 8 sectors from superblock
      Update Time : Fri Mar 15 01:14:45 2019
      Bad Block Log : 512 entries available at offset 72 sectors
      Checksum : 9284b6cb - correct
      Events : 5956

      Layout : left-symmetric
      Chunk Size : 512K

      Device Role : Active device 2
      Array State : ..AA ('A' == active, '.' == missing, 'R' == replacing)


      I tried stopping the array, and assambling with --scan, or with manually providing device names, but to no avail.



      I am sure, for 100%, that data on sda10, sdh10 and sdi10 is ok. sdf10 is new disk, so it can be resynced.



      Is there any way I could repair this raid?







      linux raid mdadm





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