LVM2 snapshot question need help

[UnrealUnix]

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 .

[SlowJet]

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.

SJ