Dotaz: Nejde mountnout druhý oddíl disku (sda2)

[Boris]

Ahoj, mám 3.5 disk HDD z kamerového nahrávacího zařízení a potřeboval bych vyexportovat nějaký obsah přes LINUX, jestli to lze. Na tom disku jsou 2 oddíly, první menší oddíl (sda1) lze mountnout bezproblémů a obsahuje nějaké informace k daným záznamům, asi hlavičky. Problém je ten, že nejde mountnout druhý větší oddíl (sda2). Když to zkusím, dostanu nápis:

"wrong fs type, bad option, bad superblock on /dev/sda2, missing codepage or helper progam, or other error"

Má někdo nějaký nápad, jak se dostat k obsahu, pokud to jde??

Děkuji za odpovědi.

Odpovědi

[alkoholik]

co vrati file -s /dev/sda2?

[Boris]

když zadám file -s /dev/sda2 odpověď je: data

[Meh]

Muze byt vadny disk, muze to byt zasifrovane, v nejakem RAIDu/LVM, nebo tam muze byt neobvykly souborovy system treba z BSD, nebo pro nej nemas modul, nebo nedostatecnou verzi. O jake nahravaci zarizeni jde? Co tam cekas za souborovy system?
Muzes zkusit:
mount -o ro /dev/sda2 /nekam
smartctl -a /dev/sda
gdisk -l /dev/sda


[debian+]

Co vrati:

fdisk -l /dev/sda | grep sda2

[Boris]

Když zadám fdisk -l /dev/sda | grep sda2 odpověď je: 8016435 976768064 968751630 462G 83 Linux

[Boris]

1) Když zadám mount -o ro /dev/sda2 /nekam tak to píše to stejné - wrong fs type, bad option, bad superblock on /dev/sda2, missing codepage or helper progam, or other error

2) Když zadám smartctl -a /dev/sda odpověď je: smartctl 6.6 2016-05-31 r4324 [x86_64-linux-4.15.0-39-generic] (local build) Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION === Model Family: Western Digital AV-GP Device Model: WDC WD5000AVDS-73U7B1 Serial Number: WD-WCAV9M397900 LU WWN Device Id: 5 0014ee 1593b3fb8 Firmware Version: 01.00A01 User Capacity: 500.107.862.016 bytes [500 GB] Sector Size: 512 bytes logical/physical Device is: In smartctl database [for details use: -P show] ATA Version is: ATA8-ACS (minor revision not indicated) SATA Version is: SATA 2.6, 3.0 Gb/s Local Time is: Fri Apr 3 13:18:14 2020 CEST 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: (0x00) Offline data collection activity was never started. Auto Offline Data Collection: Disabled. 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: (11580) seconds. Offline data collection capabilities: (0x7b) SMART execute Offline immediate. Auto Offline data collection on/off support. Suspend Offline collection upon new command. Offline surface scan supported. Self-test supported. 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: ( 2) minutes. Extended self-test routine recommended polling time: ( 136) minutes. Conveyance self-test routine recommended polling time: ( 5) minutes. SCT capabilities: (0x3037) SCT Status 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 0x002f 200 200 051 Pre-fail Always - 600 3 Spin_Up_Time 0x0027 193 186 021 Pre-fail Always - 3341 4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 343 5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0 7 Seek_Error_Rate 0x002e 100 253 000 Old_age Always - 0 9 Power_On_Hours 0x0032 001 001 000 Old_age Always - 72811 10 Spin_Retry_Count 0x0032 100 100 000 Old_age Always - 0 11 Calibration_Retry_Count 0x0032 100 100 000 Old_age Always - 0 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 341 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 339 193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 3 194 Temperature_Celsius 0x0022 110 087 000 Old_age Always - 33 196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0 197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 2 198 Offline_Uncorrectable 0x0030 100 253 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0 200 Multi_Zone_Error_Rate 0x0008 100 253 000 Old_age Offline - 0

SMART Error Log Version: 1 ATA Error Count: 370 (device log contains only the most recent five errors) CR = Command Register [HEX] FR = Features Register [HEX] SC = Sector Count Register [HEX] SN = Sector Number Register [HEX] CL = Cylinder Low Register [HEX] CH = Cylinder High Register [HEX] DH = Device/Head Register [HEX] DC = Device Command Register [HEX] ER = Error register [HEX] ST = Status register [HEX] Powered_Up_Time is measured from power on, and printed as DDd+hh:mm:SS.sss where DD=days, hh=hours, mm=minutes, SS=sec, and sss=millisec. It "wraps" after 49.710 days.

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.

3) když zadám gdisk -l /dev/sda odpově=d je: PT fdisk (gdisk) version 1.0.3

Partition table scan: MBR: MBR only BSD: not present APM: not present GPT: not present

*************************************************************** Found invalid GPT and valid MBR; converting MBR to GPT format in memory. ***************************************************************

Disk /dev/sda: 976773168 sectors, 465.8 GiB Model: WDC WD5000AVDS-7 Sector size (logical/physical): 512/512 bytes Disk identifier (GUID): 66DB574F-4266-4595-871B-F96F82B1C4BB Partition table holds up to 128 entries Main partition table begins at sector 2 and ends at sector 33 First usable sector is 34, last usable sector is 976773134 Partitions will be aligned on 8-sector boundaries Total free space is 5099 sectors (2.5 MiB)

Number Start (sector) End (sector) Size Code Name 1 63 8016434 3.8 GiB 0700 Microsoft basic data 2 8016435 976768064 461.9 GiB 8300 Linux filesystem

Jedná se o zařízení na nahrávání z kamer - 4 kanály H264 Digital video Recorder, kde jsou videosoubory, které nejdou exportovat. jsou tam videa která když spusím, se po určité době zaseknou. Takže tam soubory jsou, ale nemůžu je vytáhnout, tak to zkouším přes Linux.

Díky za rady

[debian+]

S upravenim formatovym (pozn. Boris: nauc sa tag

):

1) Když zadám mount -o ro /dev/sda2 /nekam tak to píše to stejné -

wrong fs type, bad option, bad superblock on /dev/sda2, missing codepage or helper progam, or other error

2) Když zadám smartctl -a /dev/sda odpověď je:

smartctl 6.6 2016-05-31 r4324 [x86_64-linux-4.15.0-39-generic] (local build)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Western Digital AV-GP
Device Model:     WDC WD5000AVDS-73U7B1
Serial Number:    WD-WCAV9M397900
LU WWN Device Id: 5 0014ee 1593b3fb8
Firmware Version: 01.00A01
User Capacity:    500.107.862.016 bytes [500 GB]
Sector Size:      512 bytes logical/physical
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   ATA8-ACS (minor revision not indicated)
SATA Version is:  SATA 2.6, 3.0 Gb/s
Local Time is:    Fri Apr  3 13:18:14 2020 CEST
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:  (0x00)    Offline data collection activity
                    was never started.
                    Auto Offline Data Collection: Disabled.
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:         (11580) seconds.
Offline data collection
capabilities:              (0x7b) SMART execute Offline immediate.
                    Auto Offline data collection on/off support.
                    Suspend Offline collection upon new
                    command.
                    Offline surface scan supported.
                    Self-test supported.
                    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:      (   2) minutes.
Extended self-test routine
recommended polling time:      ( 136) minutes.
Conveyance self-test routine
recommended polling time:      (   5) minutes.
SCT capabilities:            (0x3037)    SCT Status 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     0x002f   200   200   051    Pre-fail  Always       -       600
  3 Spin_Up_Time            0x0027   193   186   021    Pre-fail  Always       -       3341
  4 Start_Stop_Count        0x0032   100   100   000    Old_age   Always       -       343
  5 Reallocated_Sector_Ct   0x0033   200   200   140    Pre-fail  Always       -       0
  7 Seek_Error_Rate         0x002e   100   253   000    Old_age   Always       -       0
  9 Power_On_Hours          0x0032   001   001   000    Old_age   Always       -       72811
 10 Spin_Retry_Count        0x0032   100   100   000    Old_age   Always       -       0
 11 Calibration_Retry_Count 0x0032   100   100   000    Old_age   Always       -       0
 12 Power_Cycle_Count       0x0032   100   100   000    Old_age   Always       -       341
192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age   Always       -       339
193 Load_Cycle_Count        0x0032   200   200   000    Old_age   Always       -       3
194 Temperature_Celsius     0x0022   110   087   000    Old_age   Always       -       33
196 Reallocated_Event_Count 0x0032   200   200   000    Old_age   Always       -       0
197 Current_Pending_Sector  0x0032   200   200   000    Old_age   Always       -       2
198 Offline_Uncorrectable   0x0030   100   253   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x0032   200   200   000    Old_age   Always       -       0
200 Multi_Zone_Error_Rate   0x0008   100   253   000    Old_age   Offline      -       0

SMART Error Log Version: 1
ATA Error Count: 370 (device log contains only the most recent five errors)
    CR = Command Register [HEX]
    FR = Features Register [HEX]
    SC = Sector Count Register [HEX]
    SN = Sector Number Register [HEX]
    CL = Cylinder Low Register [HEX]
    CH = Cylinder High Register [HEX]
    DH = Device/Head Register [HEX]
    DC = Device Command Register [HEX]
    ER = Error register [HEX]
    ST = Status register [HEX]
Powered_Up_Time is measured from power on, and printed as
DDd+hh:mm:SS.sss where DD=days, hh=hours, mm=minutes,
SS=sec, and sss=millisec. It "wraps" after 49.710 days.

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.

3) když zadám gdisk -l /dev/sda odpově=d je:

PT fdisk (gdisk) version 1.0.3

Partition table scan:
  MBR: MBR only
  BSD: not present
  APM: not present
  GPT: not present


***************************************************************
Found invalid GPT and valid MBR; converting MBR to GPT format
in memory.
***************************************************************

Disk /dev/sda: 976773168 sectors, 465.8 GiB
Model: WDC WD5000AVDS-7
Sector size (logical/physical): 512/512 bytes
Disk identifier (GUID): 66DB574F-4266-4595-871B-F96F82B1C4BB
Partition table holds up to 128 entries
Main partition table begins at sector 2 and ends at sector 33
First usable sector is 34, last usable sector is 976773134
Partitions will be aligned on 8-sector boundaries
Total free space is 5099 sectors (2.5 MiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   1              63         8016434   3.8 GiB     0700  Microsoft basic data
   2         8016435       976768064   461.9 GiB   8300  Linux filesystem

Jedná se o zařízení na nahrávání z kamer - 4 kanály H264 Digital video Recorder, kde jsou videosoubory, které nejdou exportovat. jsou tam videa která když spusím, se po určité době zaseknou. Takže tam soubory jsou, ale nemůžu je vytáhnout, tak to zkouším přes Linux.

Díky za rady

[debian+]

1) Zeby sifrovane? Spravna odpoved by mala byt:

/dev/sda?: block special (?/?)

[Aleš Kapica]

No já teda bych si na tvém místě vytáhnul přes dd prvních 2014 bajtů a pak bych se na ně podíval přes hexcurse. A bylo by jasno hned.

[debian+]

dd if=/dev/sda of=sda2 bs=2048 count=1
hd sda2

Resp. uloz to na nejake paste file, aby si to pouziti mohol zmazat, a daj sem link.

[k3dAR]

to podle me nepomuze, kdyz by to rozparsoval, dostane se k tomu co uz psal, ze oddil 2 ma nastaven type 83 Linux

[k3dAR]

resp. ted sem si vsiml ze of si psal sda2, tedy pokud ses preklepl a nemyslel si vytahnout "hlavicku" disku a i if mel byt z sda2, tak pak ok, "hlavicku" filesystemu na 2 oddilu zkoumat muze pomoci :)

[debian+]

Jo, spravne je:

dd if=/dev/sda2 of=sda2 bs=2048 count=1
hd sda2

[Jendа]

hd můžeš normálně pustit přímo na ten blockdevice

[debian+]

A to:

# prvych 2000 Bajtov
hd /dev/sda2 -n 2000

[Jendа]

Proč se omezovat, hd /dev/sda2 |less

[k3dAR]

Muze byt vadny disk, muze to byt zasifrovane, v nejakem RAIDu/LVM[...]

nevim jak HW raid, ale pro LUKS, Raid MDADM, LVM by "file -s ..." hodil:

- LUKS encrypted file
- Linux Software RAID
- LVM2 PV (Linux Logical Volume Manager)

jinak "file" umi rozpoznat i dost velke exotiky, viz

a to co tazateli pise "data" je asi bohuzel exotika jeste vetsi, protoze data hlasi kdyz to neni naformatovane, nebo (asi) to nepozna

[Peter Golis]

Kedysi existoval loop-aes ktorý sa ukazoval ako biely šum. Už to vyhodili z Linuxu?

[k3dAR]

netusim, ani co by ukazal file :) nicmene myslis ze je sance aby to to zarizeni melo? koneckoncu, dokud z tazatele nevypadne o jake zarizeni se jedna tak budem jen spekulovat...

[Peter Golis]

Šanca tam je reálna, ale nereálne bude dostať heslo alebo kľúč. Teda ak ten firmware nenapísal nejaký blbec čo ho nechal v skripte.

Mohlo by sa zdať že samotný loop-aes vymrel (bol v balíku util-linux ako súčasť patchov pre losetup a mount), ale začlenili ho do cryptsetup:

:~/tmp# cryptsetup  open --type loopaes /dev/loop0 loop-aes --key-file key 
:~/tmp# mkfs.ext2 /dev/disk/by-id/dm-uuid-CRYPT-LOOPAES-loop-aes
mke2fs 1.44.1 (24-Mar-2018)
Creating filesystem with 102400 1k blocks and 25688 inodes
Filesystem UUID: 07b124ed-5d07-4fdb-b13b-051407650769
Superblock backups stored on blocks: 
	8193, 24577, 40961, 57345, 73729

Allocating group tables: done                            
Writing inode tables: done                            
Writing superblocks and filesystem accounting information: done 

:~/tmp# mount -v /dev/disk/by-id/dm-uuid-CRYPT-LOOPAES-loop-aes /mnt
mount: /dev/mapper/loop-aes mounted on /mnt.
:~/tmp# cp -pv /bin/bash /mnt
'/bin/bash' -> '/mnt/bash'
:~/tmp# umount -v /mnt
umount: /mnt unmounted
:~/tmp# cryptsetup close loop-aes
:~/tmp# file loop-aes 
loop-aes: data

PS: Ani som nevedel čo všetko pozbieral cryptsetup.

[debian+]

Ako sa vola zariadenie? Presny nazov.

[Jendа]

Podívat se hexdumpem (hd, hexdump -vC)

Spustit strings

Spustit testdisk

V nouzi spustit photorec a pokusit se ty streamy najít bez filesystému.

[Petr Šobáň]

Podle mě zbytečná námaha.

U značkových zařízení to bývá šifrované aby to šlo přehrát pouze v tom zařízení a nedalo se to kopírovat.

A u neznačkových tam je normální ext2 v kterém jsou normálně soubory s videem akorát někdy mají podivné názvy a přípony.

[M]

197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 2

Mas tam 2 podezrele sektory.