diff options
| author | NeilBrown <neilb@suse.de> | 2009-05-11 15:46:46 +1000 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2009-05-11 15:46:46 +1000 |
| commit | 0ac91628b93b31636979b637c1ac7258064dea4e (patch) | |
| tree | 88971a9e037c1519a8db205e8d6d1338ddfe8131 /mdadm.conf.5 | |
| parent | 603f24a05f48063a7239e323e2aeab497cb0feb6 (diff) | |
Allow homehost to be largely ignored when assembling arrays.
If mdadm.conf contains
HOMEHOST <ignore>
or commandline contains
--homehost=<ignore>
then the check that array metadata mentions the given homehost is
replace by a check that the name recorded in the metadata is not
already used by some other array mentioned in mdadm.conf.
This allows more arrays to use their native name rather than having
an _NN suffix added.
This should only be used during boot time if all arrays required for
normal boot are listed in mdadm.conf.
If auto-assembly is used to find all array during boot, then the
HOMEHOST feature should be used to ensure there is no room for
confusion in choosing array names, and so it should not be set
to <ignore>.
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'mdadm.conf.5')
| -rw-r--r-- | mdadm.conf.5 | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/mdadm.conf.5 b/mdadm.conf.5 index 9876d279..7ef1765a 100644 --- a/mdadm.conf.5 +++ b/mdadm.conf.5 @@ -333,18 +333,32 @@ The line gives a default value for the .B --homehost= option to mdadm. There should be exactly one other word on the line. -It should either exactly +It should either be a host name, or one of the special words .B <system> -or a host name. +and +.BR <ignore> . If .B <system> is given, then the .BR gethostname ( 2 ) systemcall is used to get the host name. -When arrays are created, this host name will be stored in the -metadata. When arrays are assembled using auto-assembly, only arrays -with this host name stored in the metadata will be considered. +If +.B <ignore> +is given, then a flag is set so that when arrays are being +auto-assemble the checking of the recorded +.I homehost +is disabled. + +When arrays are created, this host name will be stored in the +metadata. When arrays are assembled using auto-assembly, arrays which +do not record the correct homehost name in their metadata will be +assembled using a 'foreign' name. A 'foreign' name alway ends with a +digit string (possibly preceded by an underscore) to differentiate it +from any possible local name. e.g. +.B /dev/md/1_1 +or +.BR /dev/md/home0 . .TP .B AUTO A list of names of metadata format can be given, each preceded by a |