Date: Wed, 13 Mar 2019 09:48:33 +0000 (UTC) From: Eugene Grosbein <eugen@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r345085 - head/share/man/man4 Message-ID: <201903130948.x2D9mXnG094693@repo.freebsd.org>
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Author: eugen Date: Wed Mar 13 09:48:33 2019 New Revision: 345085 URL: https://svnweb.freebsd.org/changeset/base/345085 Log: mfi.4, mrsas.4: document how to get ATA TRIM support for SSD 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). Modified: head/share/man/man4/mfi.4 head/share/man/man4/mrsas.4 Modified: head/share/man/man4/mfi.4 ============================================================================== --- head/share/man/man4/mfi.4 Wed Mar 13 09:33:15 2019 (r345084) +++ head/share/man/man4/mfi.4 Wed Mar 13 09:48:33 2019 (r345085) @@ -24,7 +24,7 @@ .\" .\" $FreeBSD$ .\" -.Dd July 15, 2013 +.Dd March 13, 2019 .Dt MFI 4 .Os .Sh NAME @@ -84,6 +84,12 @@ then the driver will reduce its probe priority to allo .Cd mrsas to attach to the card instead of .Nm . +.Pp +.Nm +does not provide ATA TRIM support. +Refer to +.Cd mrsas +if TRIM support is required. .Sh HARDWARE The .Nm Modified: head/share/man/man4/mrsas.4 ============================================================================== --- head/share/man/man4/mrsas.4 Wed Mar 13 09:33:15 2019 (r345084) +++ head/share/man/man4/mrsas.4 Wed Mar 13 09:48:33 2019 (r345085) @@ -34,7 +34,7 @@ .\" .\" $FreeBSD$ .\" -.Dd May 8, 2014 +.Dd Mar 13, 2019 .Dt MRSAS 4 .Os .Sh NAME @@ -117,6 +117,12 @@ at probe call for device id's 0x005B, 0x005D, and 0x005F so that .Nm 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 The .Nm
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