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dd -t switch for mdmfs to enable TRIM on the configured filesystem.

Browse Source 
While there, fix minor style issues.

Submitted by:	Alex Kozlov <spam rm-rf kiev ua>
MFC after:	1 week
Approved by:	re (bz)
This commit is contained in:
kib 2011-09-06 10:19:01 +00:00
parent 6184ef6122
commit 3867ad03de
2 changed files with 16 additions and 6 deletions
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11
sbin/mdmfs/mdmfs.8
View File

@ -25,7 +25,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd February 15, 2007
.Dd September 4, 2011
.Dt MDMFS 8
.Os
.Sh NAME
@ -36,7 +36,7 @@
driver
.Sh SYNOPSIS
.Nm
.Op Fl DLlMNPSUX
.Op Fl DLlMNPStUX
.Op Fl a Ar maxcontig
.Op Fl b Ar block-size
.Op Fl c Ar blocks-per-cylinder-group
@ -224,6 +224,13 @@ and the optional
.Xr malloc 9
backed disks
.Pq Dv MD_MALLOC .
.It Fl t
Turn on the TRIM enable flag for
.Xr newfs 8 .
The
.Xr md 4
device supports the BIO_DELETE command, enabling the TRIM on created
filesystem allows return of freed memory to the system pool.
.It Fl U
Enable soft-updates on the file system.
This is the default, and is accepted only

7
sbin/mdmfs/mdmfs.c
View File

@ -127,7 +127,7 @@ main(int argc, char **argv)
}
while ((ch = getopt(argc, argv,
"a:b:Cc:Dd:E:e:F:f:hi:LlMm:NnO:o:Pp:Ss:t:Uv:w:X")) != -1)
"a:b:Cc:Dd:E:e:F:f:hi:LlMm:NnO:o:Pp:Ss:tUv:w:X")) != -1)
switch (ch) {
case 'a':
argappend(&newfs_arg, "-a %s", optarg);
@ -212,6 +212,9 @@ main(int argc, char **argv)
case 's':
argappend(&mdconfig_arg, "-s %s", optarg);
break;
case 't':
argappend(&newfs_arg, "-t");
break;
case 'U':
softdep = true;
break;
@ -656,7 +659,7 @@ usage(void)
{
fprintf(stderr,
"usage: %s [-DLlMNnPSUX] [-a maxcontig] [-b block-size]\n"
"usage: %s [-DLlMNnPStUX] [-a maxcontig] [-b block-size]\n"
"\t[-c blocks-per-cylinder-group][-d max-extent-size] [-E path-mdconfig]\n"
"\t[-e maxbpg] [-F file] [-f frag-size] [-i bytes] [-m percent-free]\n"
"\t[-O optimization] [-o mount-options]\n"