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List:       opensolaris-lvm-discuss
Subject:    [lvm-discuss] Transparent block filter driver using LDI
From:       paragsarfare () fastmail ! fm (parry)
Date:       2006-02-07 1:42:00
Message-ID: 13622617.1139305318582.JavaMail.suncom () oss1
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hi,

is it possible to write a filter block device driver using LDI or even without using \
it. The objective is to write a filter driver which operates on the given block \
device, without the necessity to create a new block device and routing i/o through \
this new device, as is generally done using LDI.

I want to put the driver in the i/o path of the block device, and it has to work \
transparently of the existing block driver or md driver. Eg. if there is a fs mounted \
on a device dev1, the i/o on the device should be filtered without requiring the user \
to mount a device say pseudodev1 of the filter driver.

Any suggestions ?

Thanks,
Parry
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