On Sun, Mar 22, 2020 at 9:43 PM Martin K. Petersen
<martin.petersen@xxxxxxxxxx> wrote:
>
>
> Bernhard,
>
> > There does not seem to be a change in capaticy detected - you got a
> > almost complete section of dmesg from me. Anyway, here's the whole
> > thing after plugging in:
>
> OK, got a workaround. Will send tomorrow.
>
Hi Martin,
I might be able to help test this, as I have a USB drive enclosure
that is exhibiting the same kernel message of "Optimal transfer size
33553920 bytes not a multiple of physical block size (4096 bytes)". I
noticed this as I was using the enclosure to random overwrite a batch
of old drives, and I started seeing that message in a terminal running
"journalctl -kf" after I had connected a couple of Advanced Format
(4096 byte physical, 512 byte logical) drives.
Here's an example of the USB enclosure with a 512e drive plugged in:
$ sudo sg_inq /dev/sdc
standard INQUIRY:
PQual=0 Device_type=0 RMB=0 LU_CONG=0 version=0x06 [SPC-4]
[AERC=0] [TrmTsk=0] NormACA=0 HiSUP=0 Resp_data_format=2
SCCS=0 ACC=0 TPGS=0 3PC=0 Protect=0 [BQue=0]
EncServ=0 MultiP=0 [MChngr=0] [ACKREQQ=0] Addr16=0
[RelAdr=0] WBus16=0 Sync=0 [Linked=0] [TranDis=0] CmdQue=1
[SPI: Clocking=0x0 QAS=0 IUS=0]
length=76 (0x4c) Peripheral device type: disk
Vendor identification: TOSHIBA
Product identification: MK1059GSM
Product revision level: 0
Unit serial number: 1000000000CA
$ sudo sg_readcap -16 /dev/sdc
Read Capacity results:
Protection: prot_en=0, p_type=0, p_i_exponent=0
Logical block provisioning: lbpme=0, lbprz=0
Last logical block address=1953525167 (0x74706daf), Number of
logical blocks=1953525168
Logical block length=512 bytes
Logical blocks per physical block exponent=3 [so physical block
length=4096 bytes]
Lowest aligned logical block address=0
Hence:
Device size: 1000204886016 bytes, 953869.7 MiB, 1000.20 GB
$ sudo sg_readcap -H -16 /dev/sdc
00 00 00 00 00 74 70 6d af 00 00 02 00 00 03 00 00
10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
$ sudo sg_vpd -p 0xb0 /dev/sdc
Block limits VPD page (SBC):
Write same non-zero (WSNZ): 0
Maximum compare and write length: 0 blocks
Optimal transfer length granularity: 8 blocks
Maximum transfer length: 65535 blocks
Optimal transfer length: 65535 blocks
Maximum prefetch length: 65535 blocks
Maximum unmap LBA count: 0
Maximum unmap block descriptor count: 0
Optimal unmap granularity: 0
Unmap granularity alignment valid: 0
Unmap granularity alignment: 0
Maximum write same length: 0x0 blocks
Maximum atomic transfer length: 0
Atomic alignment: 0
Atomic transfer length granularity: 0
Maximum atomic transfer length with atomic boundary: 0
Maximum atomic boundary size: 0
$ sudo sg_vpd -H -p 0xb0 /dev/sdc
Block limits VPD page (SBC):
00 00 b0 00 3c 00 00 00 08 00 00 ff ff 00 00 ff ff ...<............
10 00 00 ff ff 00 00 00 00 00 00 00 00 00 00 00 00 ................
20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
30 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
...and here's the same drive, plugged in directly to a Serial ATA port
on the mainboard:
$ sudo sg_inq /dev/sdb
standard INQUIRY:
PQual=0 Device_type=0 RMB=0 LU_CONG=0 version=0x05 [SPC-3]
[AERC=0] [TrmTsk=0] NormACA=0 HiSUP=0 Resp_data_format=2
SCCS=0 ACC=0 TPGS=0 3PC=0 Protect=0 [BQue=0]
EncServ=0 MultiP=0 [MChngr=0] [ACKREQQ=0] Addr16=0
[RelAdr=0] WBus16=0 Sync=0 [Linked=0] [TranDis=0] CmdQue=1
[SPI: Clocking=0x0 QAS=0 IUS=0]
length=96 (0x60) Peripheral device type: disk
Vendor identification: ATA
Product identification: TOSHIBA MK1059GS
Product revision level: 1U
Unit serial number: 91GCPH6RT
$ sudo sg_readcap -16 /dev/sdb
Read Capacity results:
Protection: prot_en=0, p_type=0, p_i_exponent=0
Logical block provisioning: lbpme=0, lbprz=0
Last logical block address=1953525167 (0x74706daf), Number of
logical blocks=1953525168
Logical block length=512 bytes
Logical blocks per physical block exponent=3 [so physical block
length=4096 bytes]
Lowest aligned logical block address=0
Hence:
Device size: 1000204886016 bytes, 953869.7 MiB, 1000.20 GB
$ sudo sg_readcap -H -16 /dev/sdb
00 00 00 00 00 74 70 6d af 00 00 02 00 00 03 00 00
10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
$ sudo sg_vpd -p 0xb0 /dev/sdb
Block limits VPD page (SBC):
Write same non-zero (WSNZ): 0
Maximum compare and write length: 0 blocks
Optimal transfer length granularity: 8 blocks
Maximum transfer length: 0 blocks
Optimal transfer length: 0 blocks
Maximum prefetch length: 0 blocks
Maximum unmap LBA count: 0
Maximum unmap block descriptor count: 0
Optimal unmap granularity: 0
Unmap granularity alignment valid: 0
Unmap granularity alignment: 0
Maximum write same length: 0x0 blocks
Maximum atomic transfer length: 0
Atomic alignment: 0
Atomic transfer length granularity: 0
Maximum atomic transfer length with atomic boundary: 0
Maximum atomic boundary size: 0
$ sudo sg_vpd -H -p 0xb0 /dev/sdb
Block limits VPD page (SBC):
00 00 b0 00 3c 00 00 00 08 00 00 00 00 00 00 00 00 ...<............
10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
30 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
Thanks,
Bryan
