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Raspberry Pi OS now has SATA support built-in

jeffgeerling.com

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Re: Raspberry Pi OS now has SATA support built-in

#3

Post by kelnos »

> Sure you could always use hard drives and SSDs with SATA to USB adapters, but you [...] can't RAID them together, at least not without some hacks.

Why can't you RAID them together? The kernel doesn't care; all it wants to see are block devices. I recently recovered the files off a dead NAS by plugging the drives into USB adapters, and plugging those into a Raspberry Pi. RAID array assembled just fine.

Re: Raspberry Pi OS now has SATA support built-in

#4

Post by moondev »

mosselman wrote: post #2

Has the situation around booting from a USB-drive bettered for the Raspberry pi 4? Last time I tried, I couldn't figure out how to actually make it work.

https://github.com/pftf/RPi4 allows you to store the UEFI firmware on the sd card. This enables you to not only boot from USB, but also PXE and even ISCSI

Re: Raspberry Pi OS now has SATA support built-in

#6

Post by roughly »

mosselman wrote: post #2

Has the situation around booting from a USB-drive bettered for the Raspberry pi 4? Last time I tried, I couldn't figure out how to actually make it work.

Yes - on the rpi4s, you can enable booting from usb devices directly using raspi-config, although raspbian is only 32 bit, so I wound up having to do a weird dance of using raspbian to enable usb boot and then installing ubuntu on the drive to get a 64bit OS

Re: Raspberry Pi OS now has SATA support built-in

#7

Post by TedDoesntTalk »

moondev wrote: post #4
mosselman wrote: post #2

Has the situation around booting from a USB-drive bettered for the Raspberry pi 4? Last time I tried, I couldn't figure out how to actually make it work.

https://github.com/pftf/RPi4 allows you to store the UEFI firmware on the sd card. This enables you to not only boot from USB, but also PXE and even ISCSI

UEFI on an sd card -- that is so cool.

Re: Raspberry Pi OS now has SATA support built-in

#8

Post by foxrider »

kelnos wrote: post #3

> Sure you could always use hard drives and SSDs with SATA to USB adapters, but you [...] can't RAID them together, at least not without some hacks. Why can't you RAID them together? The kernel doesn't care; all it wants to see are block devices. I recently recovered the files off a dead NAS by plugging the drives into USB adapters, and plugging those into a Raspberry Pi. RAID array assembled just fine.

Maybe they meant hardware RAID?

Re: Raspberry Pi OS now has SATA support built-in

#9

Post by zamadatix »

roughly wrote: post #6
mosselman wrote: post #2

Has the situation around booting from a USB-drive bettered for the Raspberry pi 4? Last time I tried, I couldn't figure out how to actually make it work.

Yes - on the rpi4s, you can enable booting from usb devices directly using raspi-config, although raspbian is only 32 bit, so I wound up having to do a weird dance of using raspbian to enable usb boot and then installing ubuntu on the drive to get a 64bit OS

FWIW Raspbian has a 64 bit version in beta https://downloads.raspberrypi.org/raspios_arm64/images/raspi... the base image is outdated but you can full-system update from that point.

I'm the same way though, I just use a more typical distro unless there is something I need the standard toolset for.

Re: Raspberry Pi OS now has SATA support built-in

#10

Post by scottlamb »

mosselman wrote: post #2

Has the situation around booting from a USB-drive bettered for the Raspberry pi 4? Last time I tried, I couldn't figure out how to actually make it work.

Yes, I have a Pi4 booting off a SSD on a USB-SATA bridge. No SD card installed. This graduated from beta about a year ago. [1]

Btw, since you brought up USB: disable UAS [2] when using cheap USB-SATA bridges! UAS is regularly recommended for performance reasons, but I've gotten block-level errors (eg those below) and filesystem corruption with UAS multiple times and never with UAS disabled. I've seen enough similar reports on the Internet to think it's better to just disable UAS.

    Sep 22 17:26:01 nuc kernel: sd 4:0:0:1: [sdb] tag#2 uas_eh_abort_handler 0 uas-tag 3 inflight: CMD OUT
    Sep 22 17:26:01 nuc kernel: sd 4:0:0:1: [sdb] tag#2 CDB: Write(16) 8a 00 00 00 00 01 4d b4 c4 00 00 00 03 b0 00 00
The Linux kernel has explicitly disabled UAS for some of these chipsets, but clearly not all of the offending ones. I'm not sure what you'd have to do to be confident your chipset is safe. I just don't think it's worth it.

[1] https://github.com/raspberrypi/documentation/commit/bfef967d...

[2] https://github.com/scottlamb/moonfire-nvr/wiki/System-setup#...

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