Skip site navigation (1)Skip section navigation (2)
Date:      Sun, 1 Mar 2020 08:24:33 +0200
From:      Daniel Kalchev <daniel@digsys.bg>
To:        Mario Olofo <mario.olofo@gmail.com>
Cc:        Theron <theron.tarigo@gmail.com>, Pete Wright <pete@nomadlogic.org>, FreeBSD Stable <freebsd-stable@freebsd.org>
Subject:   Re: Running FreeBSD on M.2 SSD
Message-ID:  <29C7C315-99F2-46CE-A269-341FBDFE117E@digsys.bg>
In-Reply-To: <CAP4Gn9CPtsrSTia%2BsSyT7yRiSHGfO0qJGPGrqR7sOSth7dsiwg@mail.gmail.com>
References:  <CAP4Gn9CPtsrSTia%2BsSyT7yRiSHGfO0qJGPGrqR7sOSth7dsiwg@mail.gmail.com>

next in thread | previous in thread | raw e-mail | index | archive | help
Is TRIM still on?

I understand the quirks patch indicates the drive has some trouble with 4K a=
ligned writes. If memory serves it I also indicated broken TRIM so to be saf=
e you need both.

Daniel


> On 29 Feb 2020, at 2:46, Mario Olofo <mario.olofo@gmail.com> wrote:
>=20
> =EF=BB=BFHello guys, a little update that let me more confused
>=20
> I reinstalled the FreeBSD with 4k pages using the sysctl
> vfs.zfs.min_auto_ashift =3D 12 and no errors after a lot of stress I put o=
n
> it.
> One thing that I noticed is that with the pool as 4k, the disk fill up ver=
y
> fast, recompiling the kernel used my 8GB space and didn't even completed.
> But now I don't know if the 4k is the correct answer or if this just delay=
s
> the problem as the pages are bigger.
>=20
> Mario
>=20
>> Em sex., 28 de fev. de 2020 =C3=A0s 13:18, Mario Olofo <mario.olofo@gmail=
.com>
>> escreveu:
>>=20
>> Yes, tried 4k quirk but not on install because don't know how to, I did a=

>> clean install then patch and rebuild the kernel, but
>> the volume was already configured for 512bytes, I think I would need to
>> create manually the volume, but don't remember how to anymore xD
>> But I'll search some tutorials and try. =46rom what I saw, the patch
>> suggested on bugzilla got merged into the stable branch, so the quirk wil=
l
>> be
>> detected to use 4k in the installer in a near future.
>>=20
>> Mario
>>=20
>> Em sex., 28 de fev. de 2020 =C3=A0s 12:52, Theron <theron.tarigo@gmail.co=
m>
>> escreveu:
>>=20
>>> On 2020-02-28 09:14, Mario Olofo wrote:
>>>> Thanks!
>>>>=20
>>>> The only thing that I didn't checked was the questions of Theron, about=

>>>> misaligned data.
>>>> The layout of the disk is as follows:
>>>>=20
>>>> Disco /dev/sdb: 447,1 GiB, 480113590272 bytes, 937721856 setores
>>>> Unidades: setor de 1 * 512 =3D 512 bytes
>>>> Tamanho de setor (l=C3=B3gico/f=C3=ADsico): 512 bytes / 512 bytes
>>>> Tamanho E/S (m=C3=ADnimo/=C3=B3timo): 512 bytes / 512 bytes
>>>> Tipo de r=C3=B3tulo do disco: gpt
>>>> Identificador do disco: D1725E60-D734-4461-90F8-E9EB2376A65A
>>>>=20
>>>> Dispositivo    In=C3=ADcio       Fim   Setores Tamanho Tipo
>>>> /dev/sdb1        2048   1023999   1021952    499M Windows ambiente de
>>>> recupera=C3=A7=C3=A3o
>>>> /dev/sdb2     1024000   1228799    204800    100M Sistema EFI
>>>> /dev/sdb3     1228800   1261567     32768     16M Microsoft reservado
>>>> /dev/sdb4     1261568 532482047 531220480  253,3G Microsoft dados b=C3=A1=
sico
>>>> /dev/sdb5   532482048 549257215  16775168      8G FreeBSD ZFS
>>>> /dev/sdb6   549257216 937719807 388462592  185,2G Linux sistema de
>>> arquivos
>>>>=20
>>>> The zfsroot was configured automatically by the installer, so I think
>>> that
>>>> it align the volume automaticaly right?
>>>>=20
>>>> Mario
>>>=20
>>> Yes, I don't see any potential alignment issue here.  I would wonder if
>>> this drive is misrepresenting its physical sector size, deceiving ZFS
>>> and the SATA driver into making small writes that the drive does not
>>> actually support, but it looks like you may have already tried the
>>> relevant workaround:
>>>=20
>>> On 2020-02-27 23:44, Mario Olofo wrote:
>>>> Maybe the problem really is a combination of factors, for the person
>>> that
>>>> filed a bug on bugzilla the fix was setting the quirks 4k and
>>> broken_trim,
>>>> but for me the real block size is 512bytes and only setting the flag
>>>> broken_trim didn't help...
>>>>=20
>>>> Mario
>>> Did you try 4k quirk ?
>>>=20
>>> Theron
>>>=20
>>=20
> _______________________________________________
> freebsd-stable@freebsd.org mailing list
> https://lists.freebsd.org/mailman/listinfo/freebsd-stable
> To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org"




Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?29C7C315-99F2-46CE-A269-341FBDFE117E>