Re: Unidentified subject!

[gene heskett <gheskett@shentel.net>]

On 2/7/24 23:28, Stefan Monnier wrote:
> > Well the 2T memory everybody was curious about 3 weeks ago got here early.
> >
> >  From dmesg after plugging one in:
> > [629240.916163] usb 1-2: new high-speed USB device number 39 using xhci_hcd
> > [629241.066221] usb 1-2: New USB device found, idVendor=048d,
> > idProduct=1234, bcdDevice= 2.00
> > [629241.066234] usb 1-2: New USB device strings: Mfr=1, Product=2,
> > SerialNumber=3
> > [629241.066239] usb 1-2: Product: Disk 3.0
> > [629241.066242] usb 1-2: Manufacturer: USB
> > [629241.066246] usb 1-2: SerialNumber: 2697241127107725123
> > [629241.069485] usb-storage 1-2:1.0: USB Mass Storage device detected
> > [629241.074187] scsi host37: usb-storage 1-2:1.0
> > [629242.100738] scsi 37:0:0:0: Direct-Access              SSD 3.0    2.00
> > PQ: 0 ANSI: 4
> > [629242.100959] sd 37:0:0:0: Attached scsi generic sg13 type 0
> > [629242.101190] sd 37:0:0:0: [sdm] 4096000000 512-byte logical blocks: (2.10
> > TB/1.91 TiB)
> > [629242.101289] sd 37:0:0:0: [sdm] Write Protect is off
> > [629242.101290] sd 37:0:0:0: [sdm] Mode Sense: 03 00 00 00
> > [629242.101409] sd 37:0:0:0: [sdm] No Caching mode page found
> > [629242.101410] sd 37:0:0:0: [sdm] Assuming drive cache: write through
> > [629242.103927]  sdm: sdm1
> > [629242.104047] sd 37:0:0:0: [sdm] Attached SCSI disk
> > gene@coyote:
> >
> > Looks like a reasonable facsimile of a 2T disk to me.
>
> AFAIK the bogus 128TB drives do properly report such ridiculous sizes:
> the reality only hits when you try to actually store that amount of
> information on them.
>
> [ I'm not sure how it works under the hood, but since SSDs store their
>    data "anywhere" in the flash, they can easily pretend to have any size
>    they want, and allocate the physical flash blocks only on-the-fly as
>    logical blocks are being written.
>    Also, some Flash controllers use compression, so if you store data
>    that compresses well, they can let you store a lot more than if you
>    store already compressed data.  ]
>
> IOW, to really check, try to save 2TB of videos (or other already
> compressed data), and then try and read it back.
Sounds like a lawsuit to me. If I can get Alexanders script from a few 
days back to run.  Is bash not actually bash these days? It is not doing 
for loops for me.

Thanks for the heads up, Stefan.
>          Stefan
>
> .

Cheers, Gene Heskett, CET.
--
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis