Yes, I certainly agree. but what I wanted to do is remove those big files completly from my system, so I would make sure its gone from each snap. I certainly do understand the design of zfs file system and I was just wondering if what I wanted is possible... so just on that one file example that I had, if I could just go and remove that particular file from every snap like that file would never existed... If I dont do that and I remove it from my file system those references will stay in all snaps except for the last one and that is all great... but my issue at this moment is that I have 300gb drive and only 150gb of disk space used and my file system is at almost 100% Soon I will not be able to take any snaps unless I remove some old ones or add another mirror to it...

Anyway just wanted to know if any of that woul dbe possible in any way...

Regards,

Chris


On Sat, 14 Apr 2007, Joseph Mocker wrote:



Krzys wrote:

Is there a way to mount file system as read/write and be able to remove those big files that I dont need there?

My understanding is that shapshots are read/only by design, so I don't think you are going to be able to remove files from them.

One thing to remember is that if those big files are not changing on a regular basis, they are not taking up additional space for each snapshot. There is essentially only one copy of the data that is "shared" in each snapshot. Only when the file actually changes is when extra space is consumed.

So if you are not changing those files, you'll have to look else where to find where you space is going.

Obviously one alternative is to create another filesystem for holding these big files, one that you don't snapshot, or snapshot even less often.


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