Re: Recovery of failed RAID 6 and LVM

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On 9/25/11 3:15 PM, Phil Turmel wrote:


I'm sorry, Marcin, but you shouldn't expect to get your data back.  Per your "mdadm -D" report, the rebuild was already 63% done, so the destruction of your data is certainly complete now.

What I don't understand is I still have the LVM info. It's just the LVs don't have partition table stored anymore:

# pvdisplay
    Logging initialised at Sun Sep 25 16:38:43 2011
    Set umask from 0022 to 0077
    Scanning for physical volume names
  --- Physical volume ---
  PV Name               /dev/md0
  VG Name               fridge
  PV Size               5.46 TiB / not usable 3.00 MiB
  Allocatable           yes
  PE Size               4.00 MiB
  Total PE              1430793
  Free PE               102153
  Allocated PE          1328640
  PV UUID               Ubx1OW-jCyN-Vcy2-4p2W-L6Qb-u6W8-cVkrE4

# vgdisplay
    Logging initialised at Sun Sep 25 16:40:12 2011
    Set umask from 0022 to 0077
    Finding all volume groups
    Finding volume group "fridge"
  --- Volume group ---
  VG Name               fridge
  System ID
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  33
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                7
  Open LV               0
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               5.46 TiB
  PE Size               4.00 MiB
  Total PE              1430793
  Alloc PE / Size       1328640 / 5.07 TiB
  Free  PE / Size       102153 / 399.04 GiB
  VG UUID               ZD2fsN-dFq4-PcMB-owRh-WxGs-ciK8-PPwPbd

# lvdisplay
    Logging initialised at Sun Sep 25 16:40:30 2011
    Set umask from 0022 to 0077
    Finding all logical volumes
  --- Logical volume ---
  LV Name                /dev/fridge/storage
  VG Name                fridge
  LV UUID                kIhbSq-hePX-UIVv-uuiP-iK6w-djcz-iQ3cEI
  LV Write Access        read/write
  LV Status              available
  # open                 0
  LV Size                4.88 TiB
  Current LE             1280000
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     6144
  Block device           253:0

  --- Logical volume ---
  LV Name                /dev/fridge/webstorage
  VG Name                fridge
  LV UUID                PuCGo1-LkRa-doEI-n8qU-mqS3-20Cw-SICWPk
  LV Write Access        read/write
  LV Status              available
  # open                 0
  LV Size                100.00 GiB
  Current LE             25600
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     6144
  Block device           253:1

  --- Logical volume ---
  LV Name                /dev/fridge/mailstorage
  VG Name                fridge
  LV UUID                538TGs-fRYt-VT1n-r8jE-Uvv3-nNXl-Cf8ojP
  LV Write Access        read/write
  LV Status              available
  # open                 0
  LV Size                30.00 GiB
  Current LE             7680
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     6144
  Block device           253:2

  --- Logical volume ---
  LV Name                /dev/fridge/web01
  VG Name                fridge
  LV UUID                NsABmI-ok5I-GCaE-yGV6-Dqp6-Qedz-jVDS6Y
  LV Write Access        read/write
  LV Status              available
  # open                 0
  LV Size                10.00 GiB
  Current LE             2560
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     6144
  Block device           253:3

  --- Logical volume ---
  LV Name                /dev/fridge/db01
  VG Name                fridge
  LV UUID                qa88nB-MqX8-25YN-MEqf-ln81-vNtP-w2yVMW
  LV Write Access        read/write
  LV Status              available
  # open                 0
  LV Size                10.00 GiB
  Current LE             2560
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     6144
  Block device           253:4

  --- Logical volume ---
  LV Name                /dev/fridge/mail01
  VG Name                fridge
  LV UUID                qxUbLd-SaDq-wCwd-Z5M6-2llk-8SJh-vTlruR
  LV Write Access        read/write
  LV Status              available
  # open                 0
  LV Size                10.00 GiB
  Current LE             2560
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     6144
  Block device           253:5

  --- Logical volume ---
  LV Name                /dev/fridge/win8
  VG Name                fridge
  LV UUID                TPsBeN-Nj2o-w1mt-pkS8-d9zu-wCMm-vRv3e7
  LV Write Access        read/write
  LV Status              available
  # open                 0
  LV Size                30.00 GiB
  Current LE             7680
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     6144
  Block device           253:6



--

Marcin M. Jessa
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