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Storage disk suddenly empty!-(SOLVED)

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tsathoguah
Posts: 31
Joined: 2014-09-07 10:10

Storage disk suddenly empty!-(SOLVED)

#1 Post by tsathoguah »

Guys, i'm facing a massive problem. Suddenly, after playing with mount/umount, ran from a script, my storage (sdc5) disk shows up empy (1TB).Here's what fdisk -l returns:

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root@debian:/home/dagon# fdisk -l

Disk /dev/sda: 750.2 GB, 750156374016 bytes
255 heads, 63 sectors/track, 91201 cylinders, total 1465149168 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: 0x0009daf8

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *          63   145934459    72967198+   7  HPFS/NTFS/exFAT
/dev/sda2       145934521  1465144064   659604772    5  Extended
/dev/sda5       145934523   250806779    52436128+   7  HPFS/NTFS/exFAT
/dev/sda6       250806843  1465144064   607168611    7  HPFS/NTFS/exFAT

Disk /dev/sdc: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x029e6350

   Device Boot      Start         End      Blocks   Id  System
/dev/sdc1           16065  1953520064   976752000    f  W95 Ext'd (LBA)
Partition 1 does not start on physical sector boundary.
/dev/sdc5           16128  1953520064   976751968+   7  HPFS/NTFS/exFAT

Disk /dev/sdb: 640.1 GB, 640135028736 bytes
255 heads, 63 sectors/track, 77825 cylinders, total 1250263728 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: 0x0a3e7090

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1            2048  1250256895   625127424   83  Linux
Here's the mounting script i ran:

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#!/bin/bash
cd /home/dagon/Files/
mkdir Partitions
cd ./Partitions
mkdir Windows Games Temp Storage
mount /dev/sda1 /home/dagon/Files/Partitions/Windows/
mount /dev/sda5 /home/dagon/Files/Partitions/Games/
mount /dev/sda6 /home/dagon/Files/Partitions/Temp/
mount /dev/sdc5 /home/dagon/Files/Partitions/Storage/
echo 'Disks are mounted!'
followed by the umounting one:

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#!/bin/bash
umount /dev/sda1
umount /dev/sda5
umount /dev/sda6 
umount /dev/sdc5 
rm -r /home/dagon/Files/Partitions
echo 'Disks are un-mounted!'
My storage disk (sdc-sdc5), and only that was affected
I'm under the impression that i did nothing wrong...What the h3ll is goin' on here?Perchance,disk is done for.
Is there any way to recover my data (close to 1 terra...)?
I apologise,beforehand,for i am at a loss.
Last edited by tsathoguah on 2014-11-21 00:49, edited 2 times in total.
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kiyop
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Re: Storage disk suddently empty!

#2 Post by kiyop »

Execute the following with root privilege and post the results.

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blkid /dev/sdc5
df |grep sdc5
Are you sure that /dev/sdc5 is mounted correctly?
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tsathoguah
Posts: 31
Joined: 2014-09-07 10:10

Re: Storage disk suddenly empty!

#3 Post by tsathoguah »

First of all, i've tried both manually (via terminal) and automatically (via nautilus window manager) to mount that said disk. Both ways worked fine a few hours ago.Same results are given at windows 7...disk is empy apart from a few kb of folders.

blkid /dev/sdc:

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root@debian:/home/dagon# blkid /dev/sdc5
/dev/sdc5: LABEL="Storage" UUID="01CFE7D2AE09F3F0" TYPE="ntfs"

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df |grep sdc5:
root@debian:/home/dagon# df |grep sdc5
/dev/sdc5                                              976751968   133840 976618128   1% /media/Storage
Some additional info (using smartmontools,could help):

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root@debian:/home/dagon# smartctl -i /dev/sdc
smartctl 5.41 2011-06-09 r3365 [x86_64-linux-3.2.0-4-amd64] (local build)
Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net

=== START OF INFORMATION SECTION ===
Device Model:     TOSHIBA DT01ACA100
Serial Number:    743GWMSMS
LU WWN Device Id: 5 000039 ffbd4dc72
Firmware Version: MS2OA750
User Capacity:    1,000,204,886,016 bytes [1.00 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Device is:        Not in smartctl database [for details use: -P showall]
ATA Version is:   8
ATA Standard is:  ATA-8-ACS revision 4
Local Time is:    Thu Nov 20 19:35:46 2014 EST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

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root@debian:/home/dagon# smartctl -a /dev/sdc
smartctl 5.41 2011-06-09 r3365 [x86_64-linux-3.2.0-4-amd64] (local build)
Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net

=== START OF INFORMATION SECTION ===
Device Model:     TOSHIBA DT01ACA100
Serial Number:    743GWMSMS
LU WWN Device Id: 5 000039 ffbd4dc72
Firmware Version: MS2OA750
User Capacity:    1,000,204,886,016 bytes [1.00 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Device is:        Not in smartctl database [for details use: -P showall]
ATA Version is:   8
ATA Standard is:  ATA-8-ACS revision 4
Local Time is:    Thu Nov 20 19:39:32 2014 EST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

General SMART Values:
Offline data collection status:  (0x80)	Offline data collection activity
					was never started.
					Auto Offline Data Collection: Enabled.
Self-test execution status:      (   0)	The previous self-test routine completed
					without error or no self-test has ever 
					been run.
Total time to complete Offline 
data collection: 		( 7410) seconds.
Offline data collection
capabilities: 			 (0x5b) SMART execute Offline immediate.
					Auto Offline data collection on/off support.
					Suspend Offline collection upon new
					command.
					Offline surface scan supported.
					Self-test supported.
					No Conveyance Self-test supported.
					Selective Self-test supported.
SMART capabilities:            (0x0003)	Saves SMART data before entering
					power-saving mode.
					Supports SMART auto save timer.
Error logging capability:        (0x01)	Error logging supported.
					General Purpose Logging supported.
Short self-test routine 
recommended polling time: 	 (   1) minutes.
Extended self-test routine
recommended polling time: 	 ( 124) minutes.
SCT capabilities: 	       (0x003d)	SCT Status supported.
					SCT Error Recovery Control supported.
					SCT Feature Control supported.
					SCT Data Table supported.

SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x000b   100   100   016    Pre-fail  Always       -       0
  2 Throughput_Performance  0x0005   142   142   054    Pre-fail  Offline      -       70
  3 Spin_Up_Time            0x0007   127   127   024    Pre-fail  Always       -       180 (Average 180)
  4 Start_Stop_Count        0x0012   100   100   000    Old_age   Always       -       195
  5 Reallocated_Sector_Ct   0x0033   100   100   005    Pre-fail  Always       -       0
  7 Seek_Error_Rate         0x000b   100   100   067    Pre-fail  Always       -       0
  8 Seek_Time_Performance   0x0005   118   118   020    Pre-fail  Offline      -       33
  9 Power_On_Hours          0x0012   100   100   000    Old_age   Always       -       595
 10 Spin_Retry_Count        0x0013   100   100   060    Pre-fail  Always       -       0
 12 Power_Cycle_Count       0x0032   100   100   000    Old_age   Always       -       54
192 Power-Off_Retract_Count 0x0032   100   100   000    Old_age   Always       -       203
193 Load_Cycle_Count        0x0012   100   100   000    Old_age   Always       -       203
194 Temperature_Celsius     0x0002   176   176   000    Old_age   Always       -       34 (Min/Max 20/43)
196 Reallocated_Event_Count 0x0032   100   100   000    Old_age   Always       -       0
197 Current_Pending_Sector  0x0022   100   100   000    Old_age   Always       -       0
198 Offline_Uncorrectable   0x0008   100   100   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x000a   200   200   000    Old_age   Always       -       0

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1
No self-tests have been logged.  [To run self-tests, use: smartctl -t]


SMART Selective self-test log data structure revision number 1
 SPAN  MIN_LBA  MAX_LBA  CURRENT_TEST_STATUS
    1        0        0  Not_testing
    2        0        0  Not_testing
    3        0        0  Not_testing
    4        0        0  Not_testing
    5        0        0  Not_testing
Selective self-test flags (0x0):
  After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.




On a side note, i keep coming across Testdisk as a possible solution.Should i go for it? At this point i have absolutely nothing to lose!
Last edited by tsathoguah on 2014-11-21 00:52, edited 1 time in total.
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divbyzero
Posts: 62
Joined: 2014-11-18 16:20

Re: Storage disk suddently empty!

#4 Post by divbyzero »

if your partition is suddenly cleared testdisk is the way to go - it might just be as easy as repairing the partition table
else you can get your data of it with testdisk

its not the most user-friendly tool but i have used it often in similar cases
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makh
Posts: 651
Joined: 2011-10-09 09:16

Re: Storage disk suddently empty!

#5 Post by makh »

Your bash script isnt good or for production use.

Add a functionality of confirming the umount(s), ie if not mounted drive(s) then use the danger command rm -r, else the lazy umount would be still much better.

Perhaps testdisk can save your day, use the latest grml. May help you recover.
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Bulkley
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Re: Storage disk suddently empty!

#6 Post by Bulkley »

If you don't have testdisk try a live-CD; anything that will mount all hardware and let you look at it.

My guess is that your machine is no longer mounting the drive. I hope you didn't mess with the boot sector; that can get difficult to recover.
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tsathoguah
Posts: 31
Joined: 2014-09-07 10:10

Re: Storage disk suddenty empty!

#7 Post by tsathoguah »

Ok,recovered a whole bunch of "accidentally" deleted data using testdisk (fairly simple even for retards,such as myself,apparently).Thank you all for your help.
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kiyop
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Re: Storage disk suddenly empty!-(SOLVED)

#8 Post by kiyop »

To tsathoguah,

As makh wrote,
makh wrote:Your bash script isnt good or for production use.

Add a functionality of confirming the umount(s), ie if not mounted drive(s) then use the danger command rm -r, else the lazy umount would be still much better.
tsathoguah wrote:followed by the umounting one:

Code: Select all

#!/bin/bash
umount /dev/sda1
umount /dev/sda5
umount /dev/sda6 
umount /dev/sdc5 
rm -r /home/dagon/Files/Partitions
Your script is too dangerous!
If I were you, I would remove the line "rm -r /home/dagon/Files/Partitions".
Otherwise, I would replace the line with the following

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for i in Windows Games Temp Storage;do rmdir /home/dagon/Files/Partitions/$i;done
rmdir /home/dagon/Files/Partitions
Read

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man rmdir
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