Administrace komentářů

Ahoj,

mam stroj obsahujici 9 x 1 TB Disk. Cast disku byla v RAID 1, na kterem byl /boot. Druha cast vsech disku byla spojena do RAID 6, na kterem bylo LVM.

Po tvrdem vypnuti stroje se onen RAID 6 odmital sestavit, a ja ted mam problem obnovit puvodni data. Nepamatuju si vsak puvodni rozdeleni RAID 6, tak jsem predpokladal ze byl sestaven ve stejnem poradi jako RAID 1. Po rucnim sestaveni s --force se dokonce objevily jednotlive LogicalVolumes v LVM, nejsem je vsak schopen pripojit. Momentalne jsem uz v koncich, a vyzkousel jsem kde co. Napada nekoho neco?

cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath] 
md126 : active (auto-read-only) raid1 sdb1[1] sde1[0] sdd1[2] sdi1[7] sda1[3] sdc1[4] sdj1[8] sdg1[5] sdh1[6]
      131008 blocks [9/9] [UUUUUUUUU]
      
md127 : active raid6 sdi2[7] sdh2[6] sde2[0] sda2[3] sdj2[8] sdd2[2] sdg2[5] sdb2[1] sdc2[4]
      6836404736 blocks super 1.2 level 6, 512k chunk, algorithm 2 [9/9] [UUUUUUUUU]
      
unused devices: none

mdadm --detail /dev/md127
/dev/md127:
        Version : 1.2
  Creation Time : Fri Mar  8 17:59:49 2013
     Raid Level : raid6
     Array Size : 6836404736 (6519.70 GiB 7000.48 GB)
  Used Dev Size : 976629248 (931.39 GiB 1000.07 GB)
   Raid Devices : 9
  Total Devices : 9
    Persistence : Superblock is persistent

    Update Time : Fri Mar  8 19:00:21 2013
          State : clean 
 Active Devices : 9
Working Devices : 9
 Failed Devices : 0
  Spare Devices : 0

         Layout : left-symmetric
     Chunk Size : 512K

           Name : (none):bigraid
           UUID : ef70f5ee:08429b31:e105ed20:ccad2f12
         Events : 2

    Number   Major   Minor   RaidDevice State
       0       8       66        0      active sync   /dev/sde2
       1       8       18        1      active sync   /dev/sdb2
       2       8       50        2      active sync   /dev/sdd2
       3       8        2        3      active sync   /dev/sda2
       4       8       34        4      active sync   /dev/sdc2
       5       8       98        5      active sync   /dev/sdg2
       6       8      114        6      active sync   /dev/sdh2
       7       8      130        7      active sync   /dev/sdi2
       8       8      146        8      active sync   /dev/sdj2

pvdisplay 
  --- Physical volume ---
  PV Name               /dev/md127
  VG Name               vg0
  PV Size               5,46 TiB / not usable 5,00 MiB
  Allocatable           yes 
  PE Size               4,00 MiB
  Total PE              1430608
  Free PE               1059408
  Allocated PE          371200
  PV UUID               6lQD1G-0Cne-CerT-RPQh-1uwg-u1iD-yDyKbO

vgdisplay 
  --- Volume group ---
  VG Name               vg0
  System ID             
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  21
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                10
  Open LV               0
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               5,46 TiB
  PE Size               4,00 MiB
  Total PE              1430608
  Alloc PE / Size       371200 / 1,42 TiB
  Free  PE / Size       1059408 / 4,04 TiB
  VG UUID               DXrYtl-6n6W-bPgO-HW6U-hPg7-BJiU-f3vljl

lvdisplay 
  --- Logical volume ---
  LV Path                /dev/vg0/root
  LV Name                root
  VG Name                vg0
  LV UUID                YQhDGY-9gVJ-ke2d-vPo0-YZXg-jYkt-SyNb7S
  LV Write Access        read/write
  LV Creation host, time , 
  LV Status              available
  # open                 0
  LV Size                512,00 MiB
  Current LE             128
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     14336
  Block device           253:0
   
  --- Logical volume ---
  LV Path                /dev/vg0/tmp
  LV Name                tmp
  VG Name                vg0
  LV UUID                O3y348-IZZ8-WbYN-lOF9-khX9-dsxV-nWwBjI
  LV Write Access        read/write
  LV Creation host, time , 
  LV Status              available
  # open                 0
  LV Size                512,00 MiB
  Current LE             128
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     14336
  Block device           253:1
   
  --- Logical volume ---
  LV Path                /dev/vg0/usr
  LV Name                usr
  VG Name                vg0
  LV UUID                lQ8SeY-qerd-HZqZ-t4O3-ii0G-qTbP-dBwnve
  LV Write Access        read/write
  LV Creation host, time , 
  LV Status              available
  # open                 0
  LV Size                10,00 GiB
  Current LE             2560
  Segments               2
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     14336
  Block device           253:2
   
  --- Logical volume ---
  LV Path                /dev/vg0/var
  LV Name                var
  VG Name                vg0
  LV UUID                m709Wa-2jWs-xT2R-22Fj-gfjL-MYqQ-ErQJFA
  LV Write Access        read/write
  LV Creation host, time , 
  LV Status              available
  # open                 0
  LV Size                4,00 GiB
  Current LE             1024
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     14336
  Block device           253:3
   
  --- Logical volume ---
  LV Path                /dev/vg0/vartmp
  LV Name                vartmp
  VG Name                vg0
  LV UUID                oUBEOy-PTqp-JNeH-qQ2p-WLQI-hJuy-rmt2qS
  LV Write Access        read/write
  LV Creation host, time , 
  LV Status              available
  # open                 0
  LV Size                10,00 GiB
  Current LE             2560
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     14336
  Block device           253:4
   
  --- Logical volume ---
  LV Path                /dev/vg0/swap
  LV Name                swap
  VG Name                vg0
  LV UUID                1v9ZKy-l3K9-GP07-bHsL-y9u6-ZkGB-a7DYba
  LV Write Access        read/write
  LV Creation host, time , 
  LV Status              available
  # open                 0
  LV Size                4,00 GiB
  Current LE             1024
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     14336
  Block device           253:5
   
  --- Logical volume ---
  LV Path                /dev/vg0/home
  LV Name                home
  VG Name                vg0
  LV UUID                IMwHjS-yrUS-4Kf4-4oaE-WmX4-UTRY-hl5zPS
  LV Write Access        read/write
  LV Creation host, time , 
  LV Status              available
  # open                 0
  LV Size                1,00 GiB
  Current LE             256
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     14336
  Block device           253:6
   
  --- Logical volume ---
  LV Path                /dev/vg0/backup
  LV Name                backup
  VG Name                vg0
  LV UUID                bvs04f-g0Hn-hDI6-FrCF-a80f-iSck-LM4SvW
  LV Write Access        read/write
  LV Creation host, time , 
  LV Status              available
  # open                 0
  LV Size                410,00 GiB
  Current LE             104960
  Segments               3
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     14336
  Block device           253:7
   
  --- Logical volume ---
  LV Path                /dev/vg0/mirror
  LV Name                mirror
  VG Name                vg0
  LV UUID                7XdjCE-sJaC-rTiH-aGtX-2Djz-Zvha-mTcD4a
  LV Write Access        read/write
  LV Creation host, time , 
  LV Status              available
  # open                 0
  LV Size                810,00 GiB
  Current LE             207360
  Segments               2
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     14336
  Block device           253:8
   
  --- Logical volume ---
  LV Path                /dev/vg0/privbackup
  LV Name                privbackup
  VG Name                vg0
  LV UUID                bmDC34-JJFc-sjP5-3w4L-60zg-QVWn-a3NEk9
  LV Write Access        read/write
  LV Creation host, time , 
  LV Status              available
  # open                 0
  LV Size                200,00 GiB
  Current LE             51200
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     14336
  Block device           253:9

mount /dev/vg0/mirror /mnt/mirror/
NTFS signature is missing.
Failed to mount '/dev/mapper/vg0-mirror': Invalid argument
The device '/dev/mapper/vg0-mirror' doesn't seem to have a valid NTFS.
Maybe the wrong device is used? Or the whole disk instead of a
partition (e.g. /dev/sda, not /dev/sda1)? Or the other way around?

fdisk -l /dev/vg0/mirror 

Disk /dev/vg0/mirror: 869.7 GB, 869730877440 bytes
255 heads, 63 sectors/track, 105738 cylinders, total 1698693120 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 524288 bytes / 524288 bytes

fsck /dev/vg0/mirror 
fsck from util-linux 2.21.2
e2fsck 1.42.6 (21-Sep-2012)
ext2fs_open2: Bad magic number in super-block
/sbin/e2fsck: Superblock invalid, trying backup blocks...
/sbin/e2fsck: Bad magic number in super-block while trying to open /dev/mapper/vg0-mirror

The superblock could not be read or does not describe a correct ext2
filesystem.  If the device is valid and it really contains an ext2
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
    e2fsck -b 8193 device

fsck jsem bezvysledne zkousel i pro jine superbloky, vlastne pro vsechny ktere mi doporucil mkfs.ext3 -n /dev/vg0/mirror

Nejsem si ani poradne jisty, jestli ma byt vubec RAID pole sestavene v takovemto poradi, ale na druhou stranu si myslim ze by se potom uspesne nenadetekovaly vsechny LVM nalezitosti.

Prosim zkusenejsi o radu.