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mfi.4, mrsas.4: document how to get ATA TRIM support for SSD

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while using LSI RAID adapters as it was completely obscure before:
mfi has no TRIM support at all and mrsas provides TRIM
if underlying adapter does it (for Non-RAID drives generally).
This commit is contained in:
Eugene Grosbein 2019-03-13 09:48:33 +00:00
parent 4a21f4c606
commit 9405761f7b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=345085
2 changed files with 14 additions and 2 deletions
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8
share/man/man4/mfi.4
View File

@ -24,7 +24,7 @@
.\" .\"
.\" $FreeBSD$ .\" $FreeBSD$
.\" .\"
.Dd July 15, 2013 .Dd March 13, 2019
.Dt MFI 4 .Dt MFI 4
.Os .Os
.Sh NAME .Sh NAME
@ -84,6 +84,12 @@ then the driver will reduce its probe priority to allow
.Cd mrsas .Cd mrsas
to attach to the card instead of to attach to the card instead of
.Nm . .Nm .
.Pp
.Nm
does not provide ATA TRIM support.
Refer to
.Cd mrsas
if TRIM support is required.
.Sh HARDWARE .Sh HARDWARE
The The
.Nm .Nm

8
share/man/man4/mrsas.4
View File

@ -34,7 +34,7 @@
.\" .\"
.\" $FreeBSD$ .\" $FreeBSD$
.\" .\"
.Dd May 8, 2014 .Dd Mar 13, 2019
.Dt MRSAS 4 .Dt MRSAS 4
.Os .Os
.Sh NAME .Sh NAME
@ -117,6 +117,12 @@ at probe call for device id's 0x005B, 0x005D, and
0x005F so that 0x005F so that
.Nm .Nm
does not take control of these devices without user intervention. does not take control of these devices without user intervention.
.Pp
Solid-state drives (SSD) get ATA TRIM support with
.Nm
if underlying adapter allows it.
This may require configuring SSD as Non-RAID drive
rather then JBOD virtual mode.
.Sh HARDWARE .Sh HARDWARE
The The
.Nm .Nm