diff options
Diffstat (limited to 'mdadm.8.in')
| -rw-r--r-- | mdadm.8.in | 32 |
1 files changed, 26 insertions, 6 deletions
@@ -1273,30 +1273,50 @@ resolved. .TP .BR \-r ", " \-\-remove remove listed devices. They must not be active. i.e. they should -be failed or spare devices. As well as the name of a device file +be failed or spare devices. + +As well as the name of a device file (e.g. .BR /dev/sda1 ) the words -.B failed -and +.BR failed , .B detached +and names like +.B set-A can be given to .BR \-\-remove . The first causes all failed device to be removed. The second causes any device which is no longer connected to the system (i.e an 'open' returns .BR ENXIO ) -to be removed. This will only succeed for devices that are spares or -have already been marked as failed. +to be removed. +The third will remove a set as describe below under +.BR \-\-fail . .TP .BR \-f ", " \-\-fail Mark listed devices as faulty. As well as the name of a device file, the word .B detached -can be given. This will cause any device that has been detached from +or a set name like +.B set\-A +can be given. The former will cause any device that has been detached from the system to be marked as failed. It can then be removed. +For RAID10 arrays where the number of copies evenly divides the number +of devices, the devices can be conceptually divided into sets where +each set contains a single complete copy of the data on the array. +Sometimes a RAID10 array will be configured so that these sets are on +separate controllers. In this case all the devices in one set can be +failed by giving a name like +.B set\-A +or +.B set\-B +to +.BR \-\-fail . +The appropriate set names are reported by +.BR \-\-detail . + .TP .BR \-\-set\-faulty same as |