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Logical Volume Management

442 bytes added, 16:02, 5 February 2011
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# Shrink the LV:
lvreduce vg_muskoka/lv_home --size -5G
# or specify an absolute size of 50G<br /><br />Note: If you are experiencing problems mounting the reduced LV, it may be due to the difference in extent size between the LINV and the filesystem layer. To fix this problem, remove the LV, create, format the LV, and then resize only using the lvreduce command with the -r option. This automatically reduces the filesystem , and the LV. Refer to this example below"<br /><br />lvreduce -r vg_muskoka/lv_home --size 50G<br /><br />
{{Admon/important|Check your arguments!|lvreduce and lvextend can both take absolute or relative size arguments. For example, <code>-5G</code> means "reduce the size by five gigabytes", but <code>5G</code> means "make the size five gigabytes". If you have a 100G LV, the command <code>lvresize vg_muskoka/lv_home --size -5G</code> would shrink it to 95G, but accidentally typing <code>lvresize vg_muskoka/lv_home --size 5G</code> would shrink it to 5G. This would cause data loss if you have previously resized the filesystem to 95G. Remember to check your commands carefully.}}
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