Re : QNAP NAS 3TB Seagate Hard Disk - ext4 turned to raw

Using TestDisk to repair the filesystem
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petercky98
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Joined: 01 May 2017, 06:40

Re : QNAP NAS 3TB Seagate Hard Disk - ext4 turned to raw

#1 Post by petercky98 » 01 May 2017, 08:13

Hi Sir,

Recently I have unmounted Seagate 3TB single hard disk volume(i.e., NO RAID) from QNAP NAS, but then later when I remounted the disk into the NAS, I found the filesystem type(ext4) of the data partition turned into RAW(unknown) for some unknown reason. And, I have this same issue happened for 2 different 3TB hard disk, so I believe this is caused by some unknown firmware bug in the QNAP NAS !

Thus, I have tried to run Testdisk 7 under Windows 10, and connect the problem disk to my Win10 PC via a USB/SATA adapter. Then, it appeared that Testdisk could analyze & found my Linux partition with data folder on it, and when I choose "Write" in the last step, it prompted me "OK" but then I still found the filesystem remained as "RAW" ! And, here I enclosed the details of the testdisk log file for your information.

BTW, when I run Testdisk under Windows 10, should I have to install & run some ext4 driver support software as well (e.g., ext2fsd volume manager) ?

Thanks in advance.

Rgds,
Peter Chan.

*******************************************************************************


Sun Apr 30 13:49:13 2017
Command line: TestDisk

TestDisk 7.0, Data Recovery Utility, April 2015
Christophe GRENIER <grenier@cgsecurity.org>
http://www.cgsecurity.org
OS: Windows 8 (9200)
Compiler: GCC 4.8, Cygwin 1007.34
Compilation date: 2015-04-18T13:01:55
ext2fs lib: 1.42.8, ntfs lib: 10:0:0, reiserfs lib: 0.3.1-rc8, ewf lib: 20120504, curses lib: ncurses 5.9
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(/dev/sda)=2000396619264
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(/dev/sdc)=3000592982016
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\PhysicalDrive0)=2000396619264
filewin32_getfilesize(\\.\PhysicalDrive1) GetFileSize err Incorrect function.

filewin32_setfilepointer(\\.\PhysicalDrive1) SetFilePointer err Incorrect function.

Warning: can't get size for \\.\PhysicalDrive1
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\PhysicalDrive2)=3000592982016
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\C:)=1982290984960
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\D:)=0
Warning: can't get size for \\.\D:
filewin32_getfilesize(\\.\E:) GetFileSize err Incorrect function.

filewin32_setfilepointer(\\.\E:) SetFilePointer err Incorrect function.

Warning: can't get size for \\.\E:
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\F:)=2990399245312
Hard disk list
Disk /dev/sda - 2000 GB / 1863 GiB - CHS 243201 255 63, sector size=512
Disk /dev/sdc - 3000 GB / 2794 GiB - CHS 364801 255 63, sector size=512
Drive C: - 1982 GB / 1846 GiB - CHS 240999 255 63, sector size=512
Drive F: - 2990 GB / 2785 GiB - CHS 363561 255 63, sector size=512

Partition table type (auto): None
Drive F: - 2990 GB / 2785 GiB
Partition table type: Intel

Analyse Drive F: - 2990 GB / 2785 GiB - CHS 363561 255 63
Geometry from i386 MBR: head=255 sector=63
check_part_i386 failed for partition type 83
Current partition structure:
No ext2, JFS, Reiser, cramfs or XFS marker
1 * Linux 2610 245 4 269960 79 6 4294967295
1 * Linux 2610 245 4 269960 79 6 4294967295

search_part()
Drive F: - 2990 GB / 2785 GiB - CHS 363561 255 63

recover_EXT2: s_block_group_nr=0/22120, s_mnt_count=207/4294967295, s_blocks_per_group=32768, s_inodes_per_group=2048
recover_EXT2: s_blocksize=4096
recover_EXT2: s_blocks_count 724834304
recover_EXT2: part_size 1503707136
Linux 2610 245 4 363561 191 22 5798674432 [DataVol13]
ext4 blocksize=4096 Large_file Sparse_SB, 2968 GB / 2765 GiB
Search for partition aborted

Results
* Linux 2610 245 4 363561 191 22 5798674432 [DataVol13]
ext4 blocksize=4096 Large_file Sparse_SB, 2968 GB / 2765 GiB

interface_write()
1 * Linux 2610 245 4 363561 191 22 5798674432 [DataVol13]
simulate write!

write_mbr_i386: starting...
write_all_log_i386: starting...
No extended partition
Partition table type (auto): None
Drive F: - 2990 GB / 2785 GiB
Partition table type: Intel

Analyse Drive F: - 2990 GB / 2785 GiB - CHS 363561 255 63
Geometry from i386 MBR: head=255 sector=63
check_part_i386 failed for partition type 83
Current partition structure:
No ext2, JFS, Reiser, cramfs or XFS marker
1 * Linux 2610 245 4 269960 79 6 4294967295
1 * Linux 2610 245 4 269960 79 6 4294967295

search_part()
Drive F: - 2990 GB / 2785 GiB - CHS 363561 255 63

recover_EXT2: s_block_group_nr=0/22120, s_mnt_count=207/4294967295, s_blocks_per_group=32768, s_inodes_per_group=2048
recover_EXT2: s_blocksize=4096
recover_EXT2: s_blocks_count 724834304
recover_EXT2: part_size 1503707136
Linux 2610 245 4 363561 191 22 5798674432 [DataVol13]
ext4 blocksize=4096 Large_file Sparse_SB, 2968 GB / 2765 GiB

Results
* Linux 2610 245 4 363561 191 22 5798674432 [DataVol13]
ext4 blocksize=4096 Large_file Sparse_SB, 2968 GB / 2765 GiB


dir_partition inode=2
* Linux 2610 245 4 363561 191 22 5798674432 [DataVol13]
ext4 blocksize=4096 Large_file Sparse_SB, 2968 GB / 2765 GiB
Directory /
2 drwxrwxrwx 0 0 4096 2-May-2016 22:27 .
2 drwxrwxrwx 0 0 4096 2-May-2016 22:27 ..
11 drwx------ 0 0 16384 2-May-2016 22:26 lost+found
44957697 drwxrwxrwx 0 0 4096 19-Dec-2016 01:58 JAVBT Share13
12 -rw------- 0 0 7168 2-May-2016 22:27 aquota.user

interface_write()
1 * Linux 2610 245 4 363561 191 22 5798674432 [DataVol13]
write!

write_mbr_i386: starting...
write_all_log_i386: starting...
No extended partition
You will have to reboot for the change to take effect.

TestDisk exited normally.

*************************************************************************

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Re: Re : QNAP NAS 3TB Seagate Hard Disk - ext4 turned to raw

#2 Post by cgrenier » 02 May 2017, 06:10

Please choose /dev/sdc and use EFI GPT partition table instead of PC Intel as the disk is over 2 TB.

petercky98
Posts: 7
Joined: 01 May 2017, 06:40

Re: Re : QNAP NAS 3TB Seagate Hard Disk - ext4 turned to raw

#3 Post by petercky98 » 02 May 2017, 06:23

Hi cgrenier, good day,


Thank you so much for your great & prompt support ! And I will follow your advice to try it again then...

BTW, when I run Testdisk under Windows 10, should I have to install & run some ext3/ext4 driver support software as well (e.g., ext2fsd volume manager) ?


Thanks again in advance.
Best Rgds,
Peter Chan.

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cgrenier
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Re: Re : QNAP NAS 3TB Seagate Hard Disk - ext4 turned to raw

#4 Post by cgrenier » 03 May 2017, 06:11

TestDisk includes its own ext2/3/4 library (e2fsprogs).
You can use the Advanced menu of TestDiskIf to list and copy your files or install as you suggested a driver for Windows, if you want to access your files from Windows.

petercky98
Posts: 7
Joined: 01 May 2017, 06:40

Re: Re : QNAP NAS 3TB Seagate Hard Disk - ext4 turned to raw

#5 Post by petercky98 » 03 May 2017, 06:48

Hi again, cgrenier,


Thank you again for your prompt support & reply !

Okay, I got what you meant. And, from last night, I followed your advice & tried to analyze the disk but it appeared that "Quick Search" couldn't find my lost partition, then I started to do a "Deeper Search" but seems like it may take a few days to go....

Anyway, finally no matter success or fail, later I will let you know the results.

Thanks + Best Rgds,
Peter.

petercky98
Posts: 7
Joined: 01 May 2017, 06:40

URGENT !! Re : QNAP NAS 3TB Seagate Hard Disk - ext4 turned to raw

#6 Post by petercky98 » 04 May 2017, 13:58

Hi again cgrenier,


Until this moment, Testdisk is still running "deep search" task(about 54% out of 100%). And, it appeared that the log file keep going bigger & bigger & it "eat up" all my local drive c disk space. However, I don't want to stop & restart the deep search from the very beginning, so are there any way to clear or delete the testdisk log file without stopping deep search task ?


Rgds,
Peter.

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cgrenier
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Re: Re : QNAP NAS 3TB Seagate Hard Disk - ext4 turned to raw

#7 Post by cgrenier » 05 May 2017, 06:11

Is the deeper search useful ? Didn't you see the partition during Quick Search ?
If there are a lot of read errors, the log file may grow very big.

petercky98
Posts: 7
Joined: 01 May 2017, 06:40

Re: Re : QNAP NAS 3TB Seagate Hard Disk - ext4 turned to raw

#8 Post by petercky98 » 05 May 2017, 06:31

Hi cgrenier,


Thank you for yr reply.

During quick search, I couldn't see the lost partition with my data folder in it.
After starting deeper search, I saw one read error msg like this :
Read error xxxxx/yyy/zz

** The figures of xxxxx keep changing , but yyy & zz did not change.

Is this a serious problem ?

Please give further advice.

Rgds,
Peter.

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cgrenier
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Re: Re : QNAP NAS 3TB Seagate Hard Disk - ext4 turned to raw

#9 Post by cgrenier » 06 May 2017, 07:59

Yes, it's a serious problem. It means there are bad sectors or maybe a damaged head.
If the data is valuable, you should contact a data recovery company.

petercky98
Posts: 7
Joined: 01 May 2017, 06:40

Re: Re : QNAP NAS 3TB Seagate Hard Disk - ext4 turned to raw

#10 Post by petercky98 » 06 May 2017, 08:25

Hi Cgrenier,

In this morning, the deep search finished & I came to the result screen. There are a few screen but I have captured the first & the last screen & attached in the link below for your reference. As you can see in the last screen, it seems like it could find my data folder namely "DataVol13", but there are 2 entries.

So, which one should I select ? And after selection, how to proceed ?

And, do you mean there are a lot of bad sectors ? IF not many, should I continue this recovery task ?

https://www.dropbox.com/s/ijnfi3vnrknhs ... n.jpg?dl=0
https://www.dropbox.com/s/41f9r44unnf3t ... n.jpg?dl=0

Rgds,
Peter.

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