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在 11-25-2006 08:16 AM
在 11-25-2006 08:16 AM
VMS 8.2 on IA4 Hard links 是做什麼用的
我在安裝文件中看到了下列的畫面
請問Hard links 是做什麼用的
Do you want to initialize with ODS-2 or ODS-5? (2/5/?) 5
Hard links can be enabled on ODS-5 disks. (? for more information)
Do you want to enable hard links? (Yes/No/?)
請問Hard links 是做什麼用的
Do you want to initialize with ODS-2 or ODS-5? (2/5/?) 5
Hard links can be enabled on ODS-5 disks. (? for more information)
Do you want to enable hard links? (Yes/No/?)
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在 11-25-2006 12:04 PM
在 11-25-2006 12:04 PM
VMS 8.2 on IA4 Hard links 是做什麼用的
建議您選擇 ENABLE the hard link for ODS-5 disks.
-Hard link is exactly the same thing as the hardlink in unix file system.
-If you choose not to enable hardlink then when you create file with "$ set file/enter=.." command, the traditional Alias is created .
-If you enabled hard link on an ODS-5 disk, "$ set file/enter=.." will also increment the "link count" field of the file header(similar to i-node in unix).
(You can view file header of a file with "$dump/header/block=end=0 file-name")
-The main differences between hard links and aliases are in the effect of a delete operation and the charge of disk quota.
For more on the differences between hard links and aliases , please read sec.4.10.3 of http://h71000.www7.hp.com/doc/731final/documentation/pdf/ovms_731_new_features.pdf
-Hard link is exactly the same thing as the hardlink in unix file system.
-If you choose not to enable hardlink then when you create file with "$ set file/enter=.." command, the traditional Alias is created .
-If you enabled hard link on an ODS-5 disk, "$ set file/enter=.." will also increment the "link count" field of the file header(similar to i-node in unix).
(You can view file header of a file with "$dump/header/block=end=0 file-name")
-The main differences between hard links and aliases are in the effect of a delete operation and the charge of disk quota.
For more on the differences between hard links and aliases , please read sec.4.10.3 of http://h71000.www7.hp.com/doc/731final/documentation/pdf/ovms_731_new_features.pdf
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