[dm-crypt] Cannot wipe header on device

H McCurdy hmccurdy at yahoo.com
Thu Dec 10 18:37:55 CET 2015


Hi Luis,
If the drive has its own power, it probably isn't lack of power. I would try Michael's suggestion so that we can get more data points.
An inexpensive thing to try (assuming error code 5 is an errno error, which I think it would be), is a different USB cable.  I broke one of my USB cables just last week.  It looked fine but it isn't fine.  It worked some of the time and didn't work some of the time.  It's in the garbage now after being replaced with a reliable cable.  Even so, please try Michael's test and share the results.

Hugh
 


    On Thursday, December 10, 2015 12:24 PM, Luís de Sousa <luis.a.de.sousa at gmail.com> wrote:
 

 Thank you for the reply.

I connected the external drive directly to my laptop and removed every
other stuff connected through USB. I tried again the initialisation
but I always get this same error.

This external drive is itself powered (with power brick and all). Is
there anything else I could try to identify the cause of this?

Thank you,

Luís


On 10 December 2015 at 17:49, H McCurdy <hmccurdy at yahoo.com> wrote:
> Hi Luis,
>
> Error 5 is EIO or I/O error.  My first thought was if you are using USB 2.0
> because those sometimes have power problems (that would explain an I/O
> error).  Then I looked at your log and it appears you are using 2.0.
>
> If I'm right, I suggest disconnecting every USB device that you don't
> absolutely need and trying again.  (The drive did pass a previous diagnostic
> test telling us that it was working.)  If that solves the problem, I suggest
> using a USB 3 drive or using a **powered** USB hub.
>
> Hugh
>
>
>
> On Thursday, December 10, 2015 8:20 AM, Luís de Sousa
> <luis.a.de.sousa at gmail.com> wrote:
>
>
> Hi everybody,
>
> I am trying to encrypt an external hard drive on Ubuntu 14.04
> following this guide [1]. I have previously ran badblocks, which
> returned zero errors; I am also sure the disk is not mounted:
>
> $ findmnt /dev/sdb
> $ findmnt /dev/sdb1
> $
>
> Whenever I try the initialisation with cryptsetup I get this same error:
>
> $ sudo cryptsetup -y -v luksFormat /dev/sdb1
>
> WARNING!
> ========
> This will overwrite data on /dev/sdb1 irrevocably.
>
> Are you sure? (Type uppercase yes): YES
> Enter passphrase:
> Verify passphrase:
> Cannot wipe header on device /dev/sdb1.
> Command failed with code 5: Cannot wipe header on device /dev/sdb1.
>
> dmesg is not reporting anything out of the ordinary:
>
> $ dmesg
> [ 3208.032228] usb 2-1.4: new high-speed USB device number 7 using ehci-pci
> [ 3208.140990] usb 2-1.4: New USB device found, idVendor=059f,
> idProduct=0651
> [ 3208.141001] usb 2-1.4: New USB device strings: Mfr=1, Product=2,
> SerialNumber=3
> [ 3208.141024] usb 2-1.4: Product: LaCie Hard Drive USB
> [ 3208.141031] usb 2-1.4: Manufacturer: LaCie
> [ 3208.141037] usb 2-1.4: SerialNumber: 10000E000BD8A671
> [ 3208.177576] usb-storage 2-1.4:1.0: USB Mass Storage device detected
> [ 3208.178112] scsi4 : usb-storage 2-1.4:1.0
> [ 3208.178183] usbcore: registered new interface driver usb-storage
> [ 3209.176917] scsi 4:0:0:0: Direct-Access    SEAGATE  ST3160812A
>  3.AA PQ: 0 ANSI: 2
> [ 3209.177561] sd 4:0:0:0: Attached scsi generic sg2 type 0
> [ 3209.181342] sd 4:0:0:0: [sdb] 312581808 512-byte logical blocks:
> (160 GB/149 GiB)
> [ 3209.182337] sd 4:0:0:0: [sdb] Write Protect is off
> [ 3209.182348] sd 4:0:0:0: [sdb] Mode Sense: 53 00 00 08
> [ 3209.183339] sd 4:0:0:0: [sdb] Write cache: enabled, read cache:
> enabled, doesn't support DPO or FUA
> [ 3209.201618]  sdb: sdb1
> [ 3209.229465] sd 4:0:0:0: [sdb] Attached SCSI disk
>
> In the log a strange message is reporting something with block 0:
>
> $ tail /var/log/syslog
> Dec  8 09:18:20 MekanikDestruktiwKommandoh kernel: [ 3698.016311]
> end_request: critical target error, dev sdb, sector 0
> Dec  8 09:18:28 MekanikDestruktiwKommandoh wpa_supplicant[1188]:
> wlan0: CTRL-EVENT-SCAN-STARTED
>
> Any ideas on what may be going wrong here? Thank you,
>
> Luís
>
>
> [1]
> http://www.cyberciti.biz/hardware/howto-linux-hard-disk-encryption-with-luks-cryptsetup-command/
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