bad block/superblock on new disk?

[M. Fioretti]

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


-- 

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