bad block/superblock on new disk?

Sat May 23 17:16:11 UTC 2020

On Saturday 23 May 2020 10:23:54 M. Fioretti wrote:

> On Sat, May 23, 2020 16:13:14 PM +0200, Volker Wysk wrote:
> > > I am not at my computer right now, but will try running fdisk to
> > > create the partition/partition table later today. In the meantime,
> > > further feedback/comments/pointer remain very welcome!
> >
> > Nowadays, You have the choice between two partition table standards,
> > the old MBR standard and the new GPT, which replaces MBR. The latter
> > is part of the UEFI standard. Use fdisk for an MBR and gdisk for
> > GPT. If your machine is a newer model, it is UEFI.
> >
> > If you don't want to boot from your disk, it probably doesn't
> > matter, but I'm not sure. Could please someone please fill in on
> > this?
>
> Hi Volker, and thanks for your question. No booting, I only need this
> disk as an extra backup unit, in its own external enclosure, so I
> would say MBR or GPT it doesn't matter, does it now?
>
> As I understand the problem now, the questions are 1) how to know for
> sure if something is physically broken or not, and in that case
> whether is the enclosure board, or the drive itself; and 2) if the
> drive is recoverable, how to format the part that is working as one
> ext4 partition.
>
> For convenience, the dmesg output when I turn it on is pasted again
> below.
>
> Thanks,
> Marco
>
> [259122.652148] usb 2-2: USB disconnect, device number 5
> [259122.658786] sd 6:0:0:0: [sdb] Synchronizing SCSI cache
> [259122.897871] sd 6:0:0:0: [sdb] Synchronize Cache(10) failed:
> Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK [280727.920461] usb
> 2-2: new high-speed USB device number 6 using ehci-pci [280728.121910]
> usb 2-2: New USB device found, idVendor=152d, idProduct=0578
> [280728.121919] usb 2-2: New USB device strings: Mfr=1, Product=2,
> SerialNumber=3 [280728.121923] usb 2-2: Product: USB3.0 External HDD
> [280728.121927] usb 2-2: Manufacturer: JMicron
> [280728.121930] usb 2-2: SerialNumber: 0000AB123663
> [280728.124290] scsi host6: uas
> [280728.128255] scsi 6:0:0:0: Direct-Access     WDC WD10 PURZ-85U8XY0 
>    8101 PQ: 0 ANSI: 6 [280728.130395] sd 6:0:0:0: Attached scsi
> generic sg1 type 0
> [280738.130927] sd 6:0:0:0: [sdb] Spinning up disk...
> [280739.752664] .
> [280739.752912] ready
> [280739.754291] sd 6:0:0:0: [sdb] 1953525168 512-byte logical blocks:
> (1.00 TB/932 GiB) [280739.754294] sd 6:0:0:0: [sdb] 4096-byte physical
> blocks
> [280739.754665] sd 6:0:0:0: [sdb] Write Protect is off
> [280739.754668] sd 6:0:0:0: [sdb] Mode Sense: 5f 00 00 08
> [280739.755415] sd 6:0:0:0: [sdb] Disabling FUA
> [280739.755419] sd 6:0:0:0: [sdb] Write cache: enabled, read cache:
> enabled, doesn't support DPO or FUA [280739.756042] sd 6:0:0:0: [sdb]
> Optimal transfer size 33553920 bytes not a multiple of physical block
> size (4096 bytes) [280744.326464] sd 6:0:0:0: [sdb] tag#0 FAILED
> Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [280744.326492] sd
> 6:0:0:0: [sdb] tag#0 Sense Key : Medium Error [current]
> [280744.326495] sd 6:0:0:0: [sdb] tag#0 Add. Sense: Unrecovered read
> error [280744.326499] sd 6:0:0:0: [sdb] tag#0 CDB: Read(10) 28 00 00
> 00 00 00 00 00 08 00 [280744.326503] print_req_error: critical medium
> error, dev sdb, sector 0 [280744.326510] Buffer I/O error on dev sdb,
> logical block 0, async page read [280748.892765] sd 6:0:0:0: [sdb]
> tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
> [280748.892791] sd 6:0:0:0: [sdb] tag#0 Sense Key : Medium Error
> [current] [280748.892795] sd 6:0:0:0: [sdb] tag#0 Add. Sense:
> Unrecovered read error [280748.892799] sd 6:0:0:0: [sdb] tag#0 CDB:
> Read(10) 28 00 00 00 00 00 00 00 08 00 [280748.892802]
> print_req_error: critical medium error, dev sdb, sector 0
>
That, AIUI, is not a recoverable error.  Warranty it.
>
> --
>
> M. Fioretti http://mfioretti.com                  
> http://stop.zona-m.net
>
> Your own civil rights and the quality of your life heavily depend on
> how software is used *around* you


Cheers, Gene Heskett
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