diff options
| author | NeilBrown <neilb@suse.de> | 2010-03-03 14:33:55 +1100 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2010-03-03 14:33:55 +1100 |
| commit | d1d3482b562369b0d32e4267c2e245a3371d1f10 (patch) | |
| tree | 72c0394196b102c9ec5782d5fdb80ba387ae43e7 /mdadm.conf.5 | |
| parent | 5a9de8db047646e1e59d90afc478d1820736324d (diff) | |
config: add 'homehost' option to 'AUTO' line.
This allows basing auto-assembly decisions on whether
the array is recorded as belonging to this host or not.
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'mdadm.conf.5')
| -rw-r--r-- | mdadm.conf.5 | 26 |
1 files changed, 20 insertions, 6 deletions
diff --git a/mdadm.conf.5 b/mdadm.conf.5 index 1c2ae58f..e677ba9e 100644 --- a/mdadm.conf.5 +++ b/mdadm.conf.5 @@ -336,7 +336,7 @@ to suppress this symlink creation. The .B homehost line gives a default value for the -.B --homehost= +.B \-\-homehost= option to mdadm. There should normally be only one other word on the line. It should either be a host name, or one of the special words .B <system> @@ -375,15 +375,19 @@ or .B AUTO A list of names of metadata format can be given, each preceded by a plus or minus sign. Also the word +.I homehost +is allowed as is +.I all +preceded by plus or minus sign. .I all -preceded by plus or minus is allowed and is usually last. +is usually last. When .I mdadm is auto-assembling an array, either via -.I --assemble +.I \-\-assemble or -.I --incremental +.I \-\-incremental and it finds metadata of a given type, it checks that metadata type against those listed in this line. The first match wins, where .I all @@ -393,10 +397,20 @@ assembly is allowed. If the match was preceded by a minus sign, the auto assembly is disallowed. If no match is found, the auto assembly is allowed. +If the metadata indicates that the array was created for +.I this +host, and the word +.I homehost +appears before any other match, then the array is treated as a valid +candidate for auto-assembly. + This can be used to disable all auto-assembly (so that only arrays explicitly listed in mdadm.conf or on the command line are assembled), or to disable assembly of certain metadata types which might be -handled by other software. +handled by other software. It can also be used to disable assembly of +all foreign arrays - normally such arrays are assembled but given a +non-deterministic name in +.BR /dev/md/ . The known metadata types are .BR 0.90 , @@ -451,7 +465,7 @@ CREATE group=system mode=0640 auto=part\-8 .br HOMEHOST <system> .br -AUTO +1.x -all +AUTO +1.x homehost -all .SH SEE ALSO .BR mdadm (8), |