DragonFly users List (threaded) for 2010-04
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Re: Snapshots ordering on slave and pfs according to freequency for snapshot management
On Sat, Apr 24, 2010 at 11:16 PM, Matthew Dillon
<dillon@apollo.backplane.com> wrote:
> So, here's an example. Lets say you have:
>
> /samba_export Your samba export hierarchy
> /hammer Your hammer filesystem
> /hammer/pfs/blah Some PFS in the hammer filesystem
>
> And now lets asy you want to make snapshots from PFS(s) in the hammer
> filesystem available to the export. This would work:
>
> mkdir /samba_export/fubar
> mount_null /hammer/pfs /samba_export/fubar
>
If I do this then all the pfses under /hammer/pfs will be exported using samba
I guess you meant
mount_null /hammer/pfs/blah /samba_export/fubar
?
That is what I did for the Master pfs
/Backup1 - Hammer File System
/Backup1/www-5mbak - Samba export Directory
and mount
/Backup1/pfs/www-hot /Backup1/www-5mbak/www-hot null rw
0 0
But the problem is that a slave PFs cannot be mounted. So My problem
is what I do with the slave PFS :-(
>
> You may have other issues... tracking the snapshots could present
> a problem since hammer cleanup only allows one snapshot directory
> to be specified. So you might have to come up with a little script
> to maintain a second set of snapsoft softlinks with the proper samba
> path which mirrors the master set which hammer cleanup maintains.
> Otherwise you will wind up with a lot of stale snapshot softlinks.
>
>
I Initially planned to take the 5 mins snapshots on the Master
andDaily snapshots on the slave.
So I can export by Samba 2 shares. One having the links to the 5 mins
backup( for 2 days ) and other having the links to the Daily backup (
2000 days or old )
All I need is to figure out how to remove the 5mins snapshots that
gets mirrored on the slave older than two days with out removing the
daily snapshots.
But I am a bit confused now since I dont see snapshots actually
removed after a hammer cleanup.
I will send the details with a new subject
thanks
--Siju
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