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mdmfs(8): use -o reserve with malloc-backed md(4)

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Mentioned in mdconfig(8), malloc-backed md(4) can be unstable unless
required memory is allocated up front with -o reserve. Furthermore, panics
have been observed with md used in fstab on 12.0-RELEASE. Choose the stable
route and pass -o reserve.

Submitted by:	Paul Vixie
MFC after:	1 week
This commit is contained in:
Kyle Evans 2019-02-16 23:57:38 +00:00
parent 7588d90e4a
commit c9b6ff9c98
1 changed files with 1 additions and 0 deletions
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sbin/mdmfs/mdmfs.c
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@ -196,6 +196,7 @@ main(int argc, char **argv)
usage(); usage();
mdtype = MD_MALLOC; mdtype = MD_MALLOC;
have_mdtype = true; have_mdtype = true;
argappend(&mdconfig_arg, "-o reserve");
break; break;
case 'm': case 'm':
argappend(&newfs_arg, "-m %s", optarg); argappend(&newfs_arg, "-m %s", optarg);