Re: SSD errors

[Robert Nestor <rnestor%mac.com@localhost>]

Thanks!  This is a refurb HP system but this is the only issue I’ve seen with it in the past few years. Last time I check the BIOS was as up to date as HP would take it, but it could be so far out of support that it’s too old for any new updates.   I just plugged the SSD into the controller using the same cable where the spinning disk was, but I’ll try using a different cable and moving to another controller to see if that helps.

-bob

On Mar 3, 2021, at 8:53 AM, Greg Troxel <gdt%lexort.com@localhost> wrote:

> 
> Robert Nestor <rnestor%mac.com@localhost> writes:
> 
>> Feb 26 09:50:59 amd64k /netbsd: [   3.3392559] wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133), WRITE DMA FUA, NCQ (32 tags)
>> Feb 26 09:50:59 amd64k /netbsd: [   3.3392559] wd0(ahcisata0:0:0): using PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133) (using DMA), NCQ (31 tags)
> 
> I am not aware of any general problems with NetBSD and SSDs.  Lots of
> people use them and I don't hear about trouble (other than that SSDs
> work great until they fail so you better have backups, just like any
> other disk).
> 
> I have a netbsd-9 system with a 2T SSD.   My dmesg looks like:
> 
>  wd0 at atabus2 drive 0
>  wd0: <SanDisk SDSSDH32000G>
>  wd0: drive supports 1-sector PIO transfers, LBA48 addressing
>  wd0: 1863 GB, 3876021 cyl, 16 head, 63 sec, 512 bytes/sect x 3907029168 sectors
>  wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133), NCQ (32 tags)
>  wd0(ahcisata0:2:0): using PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133) (using DMA), NCQ (31 tags)
> 
> which is just about the same.  It works with zero problems.
> 
> My guess is that either your SATA controller is not happily working with
> NetBSD, or you have a bad cable or marginal power.  I would check BIOS
> settings and see if your BIOS is up to date.
> 
> I would also run smartctl, but my experience is that device timeout is a
> SATA bus/controller issue and that bad disks get uncorrectable media
> errors instead.