diff options
Diffstat (limited to 'Documentation/md.txt')
-rw-r--r-- | Documentation/md.txt | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/Documentation/md.txt b/Documentation/md.txt index 9ae9e4078985..2202f5dc8ac2 100644 --- a/Documentation/md.txt +++ b/Documentation/md.txt | |||
@@ -62,7 +62,7 @@ be reconstructed (due to no parity). | |||
62 | 62 | ||
63 | For this reason, md will normally refuse to start such an array. This | 63 | For this reason, md will normally refuse to start such an array. This |
64 | requires the sysadmin to take action to explicitly start the array | 64 | requires the sysadmin to take action to explicitly start the array |
65 | desipite possible corruption. This is normally done with | 65 | despite possible corruption. This is normally done with |
66 | mdadm --assemble --force .... | 66 | mdadm --assemble --force .... |
67 | 67 | ||
68 | This option is not really available if the array has the root | 68 | This option is not really available if the array has the root |
@@ -175,7 +175,7 @@ All md devices contain: | |||
175 | raid levels that involve striping (1,4,5,6,10). The address space | 175 | raid levels that involve striping (1,4,5,6,10). The address space |
176 | of the array is conceptually divided into chunks and consecutive | 176 | of the array is conceptually divided into chunks and consecutive |
177 | chunks are striped onto neighbouring devices. | 177 | chunks are striped onto neighbouring devices. |
178 | The size should be atleast PAGE_SIZE (4k) and should be a power | 178 | The size should be at least PAGE_SIZE (4k) and should be a power |
179 | of 2. This can only be set while assembling an array | 179 | of 2. This can only be set while assembling an array |
180 | 180 | ||
181 | component_size | 181 | component_size |
@@ -214,8 +214,8 @@ All md devices contain: | |||
214 | safe_mode_delay | 214 | safe_mode_delay |
215 | When an md array has seen no write requests for a certain period | 215 | When an md array has seen no write requests for a certain period |
216 | of time, it will be marked as 'clean'. When another write | 216 | of time, it will be marked as 'clean'. When another write |
217 | request arrive, the array is marked as 'dirty' before the write | 217 | request arrives, the array is marked as 'dirty' before the write |
218 | commenses. This is known as 'safe_mode'. | 218 | commences. This is known as 'safe_mode'. |
219 | The 'certain period' is controlled by this file which stores the | 219 | The 'certain period' is controlled by this file which stores the |
220 | period as a number of seconds. The default is 200msec (0.200). | 220 | period as a number of seconds. The default is 200msec (0.200). |
221 | Writing a value of 0 disables safemode. | 221 | Writing a value of 0 disables safemode. |
@@ -307,8 +307,8 @@ Each directory contains: | |||
307 | This applies only to raid1 arrays. | 307 | This applies only to raid1 arrays. |
308 | spare - device is working, but not a full member. | 308 | spare - device is working, but not a full member. |
309 | This includes spares that are in the process | 309 | This includes spares that are in the process |
310 | of being recoverred to | 310 | of being recovered to |
311 | This list make grow in future. | 311 | This list may grow in future. |
312 | This can be written to. | 312 | This can be written to. |
313 | Writing "faulty" simulates a failure on the device. | 313 | Writing "faulty" simulates a failure on the device. |
314 | Writing "remove" removes the device from the array. | 314 | Writing "remove" removes the device from the array. |
@@ -330,7 +330,7 @@ Each directory contains: | |||
330 | This gives the role that the device has in the array. It will | 330 | This gives the role that the device has in the array. It will |
331 | either be 'none' if the device is not active in the array | 331 | either be 'none' if the device is not active in the array |
332 | (i.e. is a spare or has failed) or an integer less than the | 332 | (i.e. is a spare or has failed) or an integer less than the |
333 | 'raid_disks' number for the array indicating which possition | 333 | 'raid_disks' number for the array indicating which position |
334 | it currently fills. This can only be set while assembling an | 334 | it currently fills. This can only be set while assembling an |
335 | array. A device for which this is set is assumed to be working. | 335 | array. A device for which this is set is assumed to be working. |
336 | 336 | ||
@@ -353,7 +353,7 @@ in the array. These are named | |||
353 | 353 | ||
354 | rdNN | 354 | rdNN |
355 | 355 | ||
356 | where 'NN' is the possition in the array, starting from 0. | 356 | where 'NN' is the position in the array, starting from 0. |
357 | So for a 3 drive array there will be rd0, rd1, rd2. | 357 | So for a 3 drive array there will be rd0, rd1, rd2. |
358 | These are symbolic links to the appropriate 'dev-XXX' entry. | 358 | These are symbolic links to the appropriate 'dev-XXX' entry. |
359 | Thus, for example, | 359 | Thus, for example, |