mirrored device with thousand of mapping table entries
 

Hi,
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I am trying to create a mirrored device with thousand of mapping table entries.
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Unfortunately, it seems that the allocated kernel memory to satisfy this configuration is unbearable - I am talking about 6G for 10,000 entries where the used region size is for each entry is minimal (i.e. 8 blocks).
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My questions are as follows:
1.****** Did anyone tried before to create a mirrored device with thousands of targets?
2.****** What is the estimated total allocated memory per each target?
3.****** Is there something I am missing here?
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Thanks a lot,
Eli

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