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| author | Mateusz Kusiak <mateusz.kusiak@intel.com> | 2024-01-18 11:30:19 +0100 |
|---|---|---|
| committer | Mariusz Tkaczyk <mariusz.tkaczyk@linux.intel.com> | 2024-02-20 14:05:38 +0100 |
| commit | 37eeae381a8ed07a1fabb64184fe45d95a861496 (patch) | |
| tree | 6ebc6383c1f2d51c3f31b96c8138cf2e747fb242 /mdadm.8.in | |
| parent | Grow: Move update_tail assign to Grow_reshape() (diff) | |
| download | mdadm-37eeae381a8ed07a1fabb64184fe45d95a861496.tar.xz mdadm-37eeae381a8ed07a1fabb64184fe45d95a861496.zip | |
Add understanding output section in man
Add new section in man for explaining mdadm outputs.
Describe checkpoint entry.
Signed-off-by: Mateusz Kusiak <mateusz.kusiak@intel.com>
Signed-off-by: Mariusz Tkaczyk <mariusz.tkaczyk@linux.intel.com>
Diffstat (limited to 'mdadm.8.in')
| -rw-r--r-- | mdadm.8.in | 21 |
1 files changed, 20 insertions, 1 deletions
@@ -3179,7 +3179,7 @@ environment. This can be useful for testing or for disaster recovery. You should be aware that interoperability may be compromised by setting this value. -These change can also be suppressed by adding +These change can also be suppressed by adding .B mdadm.imsm.test=1 to the kernel command line. This makes it easy to test IMSM code in a virtual machine that doesn't have IMSM virtual hardware. @@ -3454,6 +3454,25 @@ is any string. These names are supported by since version 3.3 provided they are enabled in .IR mdadm.conf . +.SH UNDERSTANDING OUTPUT + +.TP +EXAMINE + +.TP +.B checkpoint +Checkpoint value is reported when array is performing some action including +resync, recovery or reshape. Checkpoints allow resuming action from certain +point if it was interrupted. + +Checkpoint is reported as combination of two values: current migration unit +and number of blocks per unit. By multiplying those values and dividing by +array size checkpoint progress percentage can be obtained in relation to +current progress reported in /proc/mdstat. Checkpoint is also related to (and +sometimes based on) sysfs entry sync_completed but depending on action units +may differ. Even if units are the same, it should not be expected that +checkpoint and sync_completed will be exact match nor updated simultaneously. + .SH NOTE .I mdadm was previously known as |