All Shares Gone - Lacie 5Big Network 2

[Jocko]

Hi cwherbert,

First your raid5 for data partition:

Code: Select all

[ 562.909148] md/raid:md4: raid level 5 active with 5 out of 5 devices, algorithm 2
[ 562.916668] RAID conf printout:
[ 562.916678] --- level:5 rd:5 wd:5
[ 562.916688] disk 0, o:1, dev:sda2
[ 562.916696] disk 1, o:1, dev:sdb2
[ 562.916704] disk 2, o:1, dev:sdc2
[ 562.916712] disk 3, o:1, dev:sdd2
[ 562.916720] disk 4, o:1, dev:sde2
[ 562.916922] md4: detected capacity change from 0 to 7993301139456

So only your fs on md4 is corrupted.

It seems that you need an usb stick (1GB is enough) to get more memory to use xfs_repair.

So download this version and do fvdw's help in this post:http://plugout.net/viewtopic.php?f=26&t=2247&hilit=xfs_repair&start=20#p19210

[cwherbert]

Hi Guys,

tried everything with mem swapon and then xfs_repair and no joy :( :pound

I then tried a xfs_repair -n /dev/md4 and got the following results:

root@fvdw-sta-kirkwood:/ # fdisk /dev/sek

Command (m for help): d
Selected partition 1

Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-1000, default 1): Using default value 1
Last cylinder or +size or +sizeM or +sizeK (1-1000, default 1000): Using default value 1000

Command (m for help): t
Selected partition 1
Hex code (type L to list codes): 82
Changed system type of partition 1 to 82 (Linux swap)

Command (m for help): w
The partition table has been altered.
Calling ioctl() to re-read partition table
root@fvdw-sta-kirkwood:/ # fdisk -l /dev/sek

Disk /dev/sek: 1048 MB, 1048576000 bytes
64 heads, 32 sectors/track, 1000 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes

Device Boot Start End Blocks Id System
/dev/sek1 1 1000 1023984 82 Linux swap
root@fvdw-sta-kirkwood:/ # mkswap /dev/sek1
Setting up swapspace version 1, size = 1048555520 bytes
UUID=db7cfc6a-2078-47c8-9752-d59631d1d6ff
root@fvdw-sta-kirkwood:/ # swapon /dev/sek1
root@fvdw-sta-kirkwood:/ # free
total used free shared buffers
Mem: 511936 22128 489808 0 4
-/+ buffers: 22124 489812
Swap: 1023980 0 1023980
root@fvdw-sta-kirkwood:/ # xfs_repair -n /dev/md4
Phase 1 - find and verify superblock...
Phase 2 - using internal log
- scan filesystem freespace and inode maps...
- found root inode chunk
Phase 3 - for each AG...
- scan (but don't clear) agi unlinked lists...
- process known inodes and perform inode discovery...
- agno = 0
- agno = 1
data fork in ino 1074044970 claims free block 683337216
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data fork in regular inode 1074044970 claims used block 683337344
bad data fork in inode 1074044970
would have cleared inode 1074044970
- agno = 2
- agno = 3
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- agno = 4
- agno = 5
- agno = 6
- agno = 7
- agno = 8
- agno = 9
- agno = 10
- agno = 11
- agno = 12
- agno = 13
- agno = 14
- agno = 15
- agno = 16
- agno = 17
- agno = 18
- agno = 19
- agno = 20
- agno = 21
- agno = 22
- agno = 23
- agno = 24
- agno = 25
- agno = 26
- agno = 27
- agno = 28
- agno = 29
- agno = 30
- agno = 31
- process newly discovered inodes...
Phase 4 - check for duplicate blocks...
- setting up duplicate extent list...
^C
root@fvdw-sta-kirkwood:/ #


At Phase 4 the process hung so I cancelled it.

When I tried xfs_repair /dev/md4 after that I got the same message again:

root@fvdw-sta-kirkwood:/ # free
total used free shared buffers
Mem: 511936 26412 485524 0 0
-/+ buffers: 26412 485524
Swap: 1023980 24912 999068
root@fvdw-sta-kirkwood:/ # xfs_repair /dev/md4
Phase 1 - find and verify superblock...
Phase 2 - using internal log
- zero log...
ERROR: The filesystem has valuable metadata changes in a log which needs to
be replayed. Mount the filesystem to replay the log, and unmount it before
re-running xfs_repair. If you are unable to mount the filesystem, then use
the -L option to destroy the log and attempt a repair.
Note that destroying the log may cause corruption -- please attempt a mount
of the filesystem before doing this.
root@fvdw-sta-kirkwood:/ #



Please help :please :please :please :please :please :please :hail :hail :hail :hail :hail :hail

[fvdw]

difficult :scratch

you could attempt to use thi suggestion

Code: Select all

the -L option to destroy the log and attempt a repair.

But this remark makes that action scary

Note that destroying the log may cause corruption -- please attempt a mount

Did you investigate this action on the internet ? (were others successful ?)

for instance if found this on the internet

>
>> ERROR: The filesystem has valuable metadata changes in a log which
>> needs to be replayed.
>
> Given this message, you'll have to run xfs_repair with the zero log
> option ( -L ). This is dangerous, but it can't get much worse anyway.

I agree with that approach.

> Run xfs_repair -L /device , you should be able to mount your filesystem
> afterwards, however any data under change at the time of failure will
> most probably be lost.

I don't know if what they write there is true

This link also gave some info http://initrd.org/wiki/XFS_Tips#Filesystem_Repairs

Think there are not many other possibilities left then trying the -L option

[cwherbert]

Hi fvdw,

Is there any chance I can save or copy my data before trying the -L option and risking corrupting the data itself?

[fvdw]

Hi fvdw,

Is there any chance I can save or copy my data before trying the -L option and risking corrupting the data itself?

the only way I could think of is making an image of all disk using a command like dd, but it will require 5 other disks to copy these large partitions and it will take a loooong time

On the other hand now you can also not access your data

[winnt]

Hello everyone,

I have a similar issue with my LaCie Big5 NAS. While deleting old files form the LaCie using Windows Explorer, I received a pop-up stating that the folder was no longer available. I could click retry or skip or cancel. I tried skip, but it didn't help. I cancelled it, but then noticed that all the shares had vanished. The RAID is healthy, but there are no shares, and the button to add a new share is grayed out with the caption stating that there are no volumes to create a share.

I am unable to mount the the volume:

root@(none):/ # mount -o ro /dev/md4 /mountpoint
mount: mounting /dev/md4 on /mountpoint failed: Input/output error

Here is the output from the mdadm command:

root@(none):/ # mdadm --examine /dev/sd[abcde]2
/dev/sda2:
Magic : a92b4efc
Version : 1.0
Feature Map : 0x0
Array UUID : 62ce0a60:d68244d8:91e2fd01:841cde0b
Name : (none):4 (local to host (none))
Creation Time : Thu Dec 15 00:02:49 2011
Raid Level : raid5
Raid Devices : 5

Avail Dev Size : 5856481280 (2792.59 GiB 2998.52 GB)
Array Size : 11712962560 (11170.35 GiB 11994.07 GB)
Super Offset : 5856481536 sectors
State : clean
Device UUID : 9dd875af:a2cd3d96:a8a7de1b:1c66e7e6

Update Time : Sun Apr 26 10:50:57 2015
Checksum : 95ab04a1 - correct
Events : 8824757

Layout : left-symmetric
Chunk Size : 512K

Device Role : Active device 0
Array State : AAAAA ('A' == active, '.' == missing)
/dev/sdb2:
Magic : a92b4efc
Version : 1.0
Feature Map : 0x0
Array UUID : 62ce0a60:d68244d8:91e2fd01:841cde0b
Name : (none):4 (local to host (none))
Creation Time : Thu Dec 15 00:02:49 2011
Raid Level : raid5
Raid Devices : 5

Avail Dev Size : 5856481280 (2792.59 GiB 2998.52 GB)
Array Size : 11712962560 (11170.35 GiB 11994.07 GB)
Super Offset : 5856481536 sectors
State : clean
Device UUID : a7dc058b:c51cef83:610953a0:6eef8f9c

Update Time : Sun Apr 26 10:50:57 2015
Checksum : 990942da - correct
Events : 8824757

Layout : left-symmetric
Chunk Size : 512K

Device Role : Active device 1
Array State : AAAAA ('A' == active, '.' == missing)
/dev/sdc2:
Magic : a92b4efc
Version : 1.0
Feature Map : 0x0
Array UUID : 62ce0a60:d68244d8:91e2fd01:841cde0b
Name : (none):4 (local to host (none))
Creation Time : Thu Dec 15 00:02:49 2011
Raid Level : raid5
Raid Devices : 5

Avail Dev Size : 5856481280 (2792.59 GiB 2998.52 GB)
Array Size : 11712962560 (11170.35 GiB 11994.07 GB)
Super Offset : 5856481536 sectors
State : clean
Device UUID : 225f19d9:88694055:a653b48f:deb3d0ac

Update Time : Sun Apr 26 10:50:57 2015
Checksum : b81020ce - correct
Events : 8824757

Layout : left-symmetric
Chunk Size : 512K

Device Role : Active device 2
Array State : AAAAA ('A' == active, '.' == missing)
/dev/sdd2:
Magic : a92b4efc
Version : 1.0
Feature Map : 0x0
Array UUID : 62ce0a60:d68244d8:91e2fd01:841cde0b
Name : (none):4 (local to host (none))
Creation Time : Thu Dec 15 00:02:49 2011
Raid Level : raid5
Raid Devices : 5

Avail Dev Size : 5856481280 (2792.59 GiB 2998.52 GB)
Array Size : 11712962560 (11170.35 GiB 11994.07 GB)
Super Offset : 5856481536 sectors
State : clean
Device UUID : 8bf1ae4b:af606d98:6d75c45d:125f591c

Update Time : Sun Apr 26 10:50:57 2015
Checksum : ab6b7759 - correct
Events : 8824757

Layout : left-symmetric
Chunk Size : 512K

Device Role : Active device 3
Array State : AAAAA ('A' == active, '.' == missing)
/dev/sde2:
Magic : a92b4efc
Version : 1.0
Feature Map : 0x0
Array UUID : 62ce0a60:d68244d8:91e2fd01:841cde0b
Name : (none):4 (local to host (none))
Creation Time : Thu Dec 15 00:02:49 2011
Raid Level : raid5
Raid Devices : 5

Avail Dev Size : 7809984512 (3724.09 GiB 3998.71 GB)
Array Size : 11712962560 (11170.35 GiB 11994.07 GB)
Used Dev Size : 5856481280 (2792.59 GiB 2998.52 GB)
Super Offset : 7809984768 sectors
State : clean
Device UUID : f69c2b79:8e2d3fba:f99b73df:7dab6db7

Update Time : Sun Apr 26 10:50:57 2015
Checksum : 5d929f - correct
Events : 8824757

Layout : left-symmetric
Chunk Size : 512K

Device Role : Active device 4
Array State : AAAAA ('A' == active, '.' == missing)
root@(none):/ #



Any help would be appreciated. Thanks!

[Jocko]

Hi winnt,

As all disk seems ok, I am pretty sure it is not an issue on RAID side (rather xfs issue on md4).

To valid fully your raid, what was the output when you assembled it

Code: Select all

mdadm --assemble /dev/md4 /dev/[abcde]2

and post also

Code: Select all

cat /proc/mdstat
mdadm --detail /dev/md4

[winnt]

Code: Select all

root@(none):/ # mdadm --assemble /dev/md4 /dev/sd[abcde]2
mdadm: /dev/md4 has been started with 5 drives.


root@(none):/ # cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4]
md4 : active raid5 sda2[0] sde2[5] sdd2[3] sdc2[2] sdb2[1]
      11712962560 blocks super 1.0 level 5, 512k chunk, algorithm 2 [5/5] [UUUUU]

unused devices: <none>
root@(none):/ # mdadm --detail /dev/md4
/dev/md4:
        Version : 1.0
  Creation Time : Thu Dec 15 00:02:49 2011
     Raid Level : raid5
     Array Size : 11712962560 (11170.35 GiB 11994.07 GB)
  Used Dev Size : 2928240640 (2792.59 GiB 2998.52 GB)
   Raid Devices : 5
  Total Devices : 5
    Persistence : Superblock is persistent

    Update Time : Sun Apr 26 11:06:28 2015
          State : clean
 Active Devices : 5
Working Devices : 5
 Failed Devices : 0
  Spare Devices : 0

         Layout : left-symmetric
     Chunk Size : 512K

           Name : (none):4  (local to host (none))
           UUID : 62ce0a60:d68244d8:91e2fd01:841cde0b
         Events : 8824757

    Number   Major   Minor   RaidDevice State
       0       8       34        0      active sync   /dev/sda2
       1       8       18        1      active sync   /dev/sdb2
       2       8        2        2      active sync   /dev/sdc2
       3       8       66        3      active sync   /dev/sdd2
       5       8       50        4      active sync   /dev/sde2

[Jocko]

Ok,

Your raid is clean and so should be a fs issue.

Then, we go to try to use a new binary to mount /dev/md4 as detailed in http://plugout.net/viewtopic.php?f=26&t=1574&start=40#p19163

After installing the new mount command, create a mount point

Code: Select all

mkdir /md4

Try to mount md4

Code: Select all

/usr/sbin/mount /dev/md4 /md4

If you succeeded, you can see your data with the command

Code: Select all

ls -l /md4

Note: please to use the bbcode "Code" when you post your output (easier to read them...) I edited your last post

[winnt]

root@(none):/usr/sbin # mount /dev/md4 /md4
mount: mounting /dev/md4 on /md4 failed: Input/output error

Looks like the same error. :sob

Thanks for your help with troubleshooting this!