Re: Brocken Raid & LUKS

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Am 22.02.2013 23:35, schrieb Phil Turmel:
On 02/22/2013 03:43 PM, Stone wrote:
so hello again.
the script was running and i looked at my logs.

this results i have
with chunk-size 8,16,32,64,128 i have always the same error: Enter
passphrase for /dev/md2: No key available with this passphrase.

the first time to open it is possible with chunk 256

i send you some logs from 256 and 512

at 512 i get the first results with checksum errors.
i think the right size is 512?! but the filesystem is brocken?!
Damage near the beginning of your filesystem is expected, remember?
Lots of damage further in is not expected, once we have the right settings.

Very interesting.  Especially this with sdb-sdc-missing-sde:

The filesystem size (according to the superblock) is 1465134336 blocks
The physical size of the device is 1465133568 blocks
Either the superblock or the partition table is likely to be corrupt!
Abort? no

I think this is the right device order, and the right chunk size.  It
also best matches what we know of your original setup.  But the total
size of the array device is 768 blocks smaller than it should be.  This
should be solved.

Please recreate the array with this combination, then show:

mdadm -D /dev/md2
mdadm -E /dev/sd[bce]1
cat /proc/partitions
for x in /dev/sd[bce] ; do fdisk -l $x ; done

Phil

i dont know what chunk do you what but i think you mean 512k

mdadm --create /dev/md2 --assume-clean --chunk=512 --verbose --level=5 --raid-devices=4 /dev/sdb1 /dev/sdc1 missing /dev/sde1
mdadm: layout defaults to left-symmetric
mdadm: layout defaults to left-symmetric
mdadm: layout defaults to left-symmetric
mdadm: /dev/sdb1 appears to be part of a raid array:
    level=raid5 devices=4 ctime=Fri Feb 22 21:30:55 2013
mdadm: layout defaults to left-symmetric
mdadm: /dev/sdc1 appears to be part of a raid array:
    level=raid5 devices=4 ctime=Fri Feb 22 21:30:55 2013
mdadm: layout defaults to left-symmetric
mdadm: /dev/sde1 appears to be part of a raid array:
    level=raid5 devices=4 ctime=Fri Feb 22 21:30:55 2013
mdadm: size set to 1953511936K
Continue creating array? y
mdadm: Defaulting to version 1.2 metadata
mdadm: array /dev/md2 started


mdadm -E /dev/sd[bce]1
/dev/sdb1:
          Magic : a92b4efc
        Version : 1.2
    Feature Map : 0x0
     Array UUID : 63da1137:ee45cd1f:72935645:398569ae
           Name : ubuntu:2  (local to host ubuntu)
  Creation Time : Fri Feb 22 23:40:12 2013
     Raid Level : raid5
   Raid Devices : 4

 Avail Dev Size : 3907027037 (1863.02 GiB 2000.40 GB)
     Array Size : 11721071616 (5589.04 GiB 6001.19 GB)
  Used Dev Size : 3907023872 (1863.01 GiB 2000.40 GB)
    Data Offset : 2048 sectors
   Super Offset : 8 sectors
          State : clean
    Device UUID : 76d36328:32020f15:893f4962:f1cf0e7a

    Update Time : Fri Feb 22 23:40:12 2013
       Checksum : 225b2e91 - correct
         Events : 0

         Layout : left-symmetric
     Chunk Size : 512K

   Device Role : Active device 0
   Array State : AA.A ('A' == active, '.' == missing)
/dev/sdc1:
          Magic : a92b4efc
        Version : 1.2
    Feature Map : 0x0
     Array UUID : 63da1137:ee45cd1f:72935645:398569ae
           Name : ubuntu:2  (local to host ubuntu)
  Creation Time : Fri Feb 22 23:40:12 2013
     Raid Level : raid5
   Raid Devices : 4

 Avail Dev Size : 3907024896 (1863.01 GiB 2000.40 GB)
     Array Size : 11721071616 (5589.04 GiB 6001.19 GB)
  Used Dev Size : 3907023872 (1863.01 GiB 2000.40 GB)
    Data Offset : 2048 sectors
   Super Offset : 8 sectors
          State : clean
    Device UUID : 5bb7b565:81820027:695dad8b:e3d97352

    Update Time : Fri Feb 22 23:40:12 2013
       Checksum : 7367b23b - correct
         Events : 0

         Layout : left-symmetric
     Chunk Size : 512K

   Device Role : Active device 1
   Array State : AA.A ('A' == active, '.' == missing)
/dev/sde1:
          Magic : a92b4efc
        Version : 1.2
    Feature Map : 0x0
     Array UUID : 63da1137:ee45cd1f:72935645:398569ae
           Name : ubuntu:2  (local to host ubuntu)
  Creation Time : Fri Feb 22 23:40:12 2013
     Raid Level : raid5
   Raid Devices : 4

 Avail Dev Size : 3907027037 (1863.02 GiB 2000.40 GB)
     Array Size : 11721071616 (5589.04 GiB 6001.19 GB)
  Used Dev Size : 3907023872 (1863.01 GiB 2000.40 GB)
    Data Offset : 2048 sectors
   Super Offset : 8 sectors
          State : clean
    Device UUID : e016452e:6e86b9fa:27b46b87:08484e32

    Update Time : Fri Feb 22 23:40:12 2013
       Checksum : eb48e2ef - correct
         Events : 0

         Layout : left-symmetric
     Chunk Size : 512K

   Device Role : Active device 3
   Array State : AA.A ('A' == active, '.' == missing)


/proc/partitions
major minor  #blocks  name

   8        0  244198584 sda
   8        1     248832 sda1
   8        2          1 sda2
   8        5  243947520 sda5
 252        0  235589632 dm-0
 252        1    8351744 dm-1
   8       16 1953514584 sdb
   8       17 1953514542 sdb1
   8       32 1953514584 sdc
   8       33 1953513472 sdc1
   8       48 1953514584 sdd
   8       49 1953514542 sdd1
   8       64 1953514584 sde
   8       65 1953514542 sde1
   9        2 5860535808 md2



for x in /dev/sd[bce] ; do fdisk -l $x ; done

WARNING: GPT (GUID Partition Table) detected on '/dev/sdb'! The util fdisk doesn't support GPT. Use GNU Parted.


Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1  3907029167  1953514583+  ee  GPT

WARNING: GPT (GUID Partition Table) detected on '/dev/sdc'! The util fdisk doesn't support GPT. Use GNU Parted.


Disk /dev/sdc: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System
/dev/sdc1               1  3907029167  1953514583+  ee  GPT

WARNING: GPT (GUID Partition Table) detected on '/dev/sde'! The util fdisk doesn't support GPT. Use GNU Parted.


Disk /dev/sde: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System
/dev/sde1               1  3907029167  1953514583+  ee  GPT

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