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Old 12th September 2008, 08:28 AM
UnrealUnix Offline
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Join Date: Sep 2008
Posts: 1
LVM2 snapshot question need help

I install unh-iscsi target , and I found I can't set user rights on it . So, I can't protect my original data , anybody can change it , write in , delete .

well , I think maybe LVM2 snapshot can sovle this problem .

I means . LVM2 snashot original data , and only I can change original data , another user only read and write in catch space ,when they reconnect my iscsi target , the iscsi disk roll back be used LVM2 snapshot.

please help me .
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Old 12th September 2008, 09:20 AM
SlowJet Offline
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Join Date: Jan 2005
Posts: 5,059
Can't you just use a top level /dir set by root to rx rx
owned by /root
and then a /subdir owned by /you with rwx

everyone could see the top level /dir but could not read anything in it if you have a unique suid and guid,
or it is assigned to a group and you are a member of that group..

An LVM snapshot is not a copy but rather a point in time static snapshot (as in "take a picture".
As the original is updated, the old blocks are put in the snapshot.

Do the Math

Last edited by SlowJet; 12th September 2008 at 09:59 AM. Reason: rx rx not rwx rx as root doesn't care
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