I have to backup many filesystems, which are changing and machines are heavy
loaded.
The idea is to backup online - this should avoid I/O read operations from
disks,
data should go from cache.
Now I'm using script that does snapshot and zfs send.
I want to automate this operation and add new option to zfs send
zfs send [-w sec ] [-i <snapshot>] <snapshot>
for example
zfs send -w 10 pool/[EMAIL PROTECTED]
zfs send then would:
1. create replicate snapshot if it does not exist
2. send data
3. wait 10 seconds
4. rename snapshot to replicate_previous ( destroy previous if exists )
5. goto 1.
All snapshot operations are done in kernel - it works faster then.
I have implemented this mechanism and it works.
Do you think this change will be integrated to opensolaris ?
Is there chance this option will be available in Solaris update 4 ?
Maybe there is other way to backup filesystem online ?
I tried to traverse changing filesystem, but it does not work.
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