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([2600:1700:3580:3560:a236:9fff:fe4f:c69a]) by smtp.gmail.com with ESMTPSA id 00721157ae682-703d1e5c38asm12009077b3.46.2025.04.04.19.28.30 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 04 Apr 2025 19:28:30 -0700 (PDT) Message-ID: <35d2361d-80e8-489a-bd9d-6c5ada5736b8@FreeBSD.org> Date: Fri, 4 Apr 2025 22:28:32 -0400 List-Id: Discussions about the use of FreeBSD-current List-Archive: https://lists.freebsd.org/archives/freebsd-current List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-current@FreeBSD.org MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: Samsung T7 external SSD support? To: Steve Kargl , freebsd-current@freebsd.org References: <39bd6092-4bd9-4086-b202-08b83b425fb5@comcast.net> Content-Language: en-US From: Alexander Motin In-Reply-To: <39bd6092-4bd9-4086-b202-08b83b425fb5@comcast.net> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US] X-Rspamd-Queue-Id: 4ZTzt831HDz46qL X-Spamd-Bar: ---- On 04.04.2025 21:45, Steve Kargl wrote: > Anyone using a Samsung T7 external SSD with FreeBSD current? > > If I plug the drive into a USB 2.0 port, I see > > usb_msc_auto_quirk: UQ_MSC_NO_GETMAXLUN set for USB mass storage device > Samsung PSSD T7 Shield (0x04e8:0x61fb) > ugen0.2: at usbus0 > umass0 on uhub1 > umass0: on > usbus0 > umass0:  SCSI over Bulk-Only; quirks = 0x0100 > umass0:5:0: Attached to scbus5 > da0 at umass-sim0 bus 0 scbus5 target 0 lun 0 > da0: Fixed Direct Access SPC-4 SCSI device > da0: Serial Number S6NPNS0Y201077Y > da0: 40.000MB/s transfers > da0: 1907729MB (3907029168 512 byte sectors) > da0: quirks=0x2 > > However, the SSD is supposedly a USB 3.2 gen 2 device with a ~1000 MBps > read/write speed. > > When plugged into a USB 3.x port, I typically see > > ugen0.2: at usbus0 > > and the device is not listed with usbconfig.  Repeatedly, unplugging the > ssd and re-plugging it into the USB 3.x port, I eventually get the above > dmesg output.  Do I need a quirk for this SSD to get recognized?  Also, > shouldn't it connect with faster transfer rate than 'da0: 40.0MB/s'? 40MB/s exactly means the device connected to USB2 controller or at least at USB2 speed. Considering that other times it does not connect at all, I wonder if some signal quality issue or something else prevents it from going proper USB3. IIRC USB3 uses completely different wires in the connector. Also USB2 and USB3 can be handled by different controllers with different drivers, so not detecting it still might be a software issue, but I can't say much about that area. -- Alexander Motin