diff options
Diffstat (limited to 'drivers/md/Kconfig')
-rw-r--r-- | drivers/md/Kconfig | 29 |
1 files changed, 0 insertions, 29 deletions
diff --git a/drivers/md/Kconfig b/drivers/md/Kconfig index 449d0b9cac14..36e0675be9f7 100644 --- a/drivers/md/Kconfig +++ b/drivers/md/Kconfig | |||
@@ -152,35 +152,6 @@ config MD_RAID456 | |||
152 | 152 | ||
153 | If unsure, say Y. | 153 | If unsure, say Y. |
154 | 154 | ||
155 | config MD_RAID5_RESHAPE | ||
156 | bool "Support adding drives to a raid-5 array" | ||
157 | depends on MD_RAID456 | ||
158 | default y | ||
159 | ---help--- | ||
160 | A RAID-5 set can be expanded by adding extra drives. This | ||
161 | requires "restriping" the array which means (almost) every | ||
162 | block must be written to a different place. | ||
163 | |||
164 | This option allows such restriping to be done while the array | ||
165 | is online. | ||
166 | |||
167 | You will need mdadm version 2.4.1 or later to use this | ||
168 | feature safely. During the early stage of reshape there is | ||
169 | a critical section where live data is being over-written. A | ||
170 | crash during this time needs extra care for recovery. The | ||
171 | newer mdadm takes a copy of the data in the critical section | ||
172 | and will restore it, if necessary, after a crash. | ||
173 | |||
174 | The mdadm usage is e.g. | ||
175 | mdadm --grow /dev/md1 --raid-disks=6 | ||
176 | to grow '/dev/md1' to having 6 disks. | ||
177 | |||
178 | Note: The array can only be expanded, not contracted. | ||
179 | There should be enough spares already present to make the new | ||
180 | array workable. | ||
181 | |||
182 | If unsure, say Y. | ||
183 | |||
184 | config MD_RAID6_PQ | 155 | config MD_RAID6_PQ |
185 | tristate | 156 | tristate |
186 | 157 | ||