Ray,
Thanks so much for your answer. You said the feature is being "worked on". I see some work related to thin provisioning "pools" in the latest LVM code. Is this the work you are referring to? If so do you know anything about it (maybe just a paragraph about how it works)? This has peaked my interest and I look forward to what LVM has to offer in the future.
Have a good day!
Dusty
----- Original Message -----
From: Ray Morris <support@bettercgi.com>
To: linux-lvm@redhat.com
Cc: Dusty Mabe <dustymabe@yahoo.com>
Sent: Thursday, October 13, 2011 2:25 PM
Subject: Re: dynamic lvm snapshots (auto-resize)
I think that's being worked on / beta. Until it's ready, we implemented
it in a daemon that is 49 lines of Perl. This particular implementation
is set to match our environment but you can modify it to your needs:
#!/usr/bin/perl
use Getopt::Long;
use lib 'lib';
use Linux::LVM;
my $lvname;
my $usage = "usage: $0 --lvname lvname\n";
die $usage unless ( GetOptions ( "lvname=s" => \$lvname ) );
die $usage unless ($lvname);
my $ppid = getppid();
while ( -e "/proc/$ppid") {
&check_snaps($lvname);
sleep(60);
}
sub check_snaps {
my $lvname = shift();
for ($snapnum = 2; $snapnum >= 0; $snapnum--) {
if (-e "/dev/clones/${lvname}_snap${snapnum}") {
my %lv = get_lv_info("/dev/clones/${lvname}_snap${snapnum}");
next unless ($lv{'lv_name'});
unless ($lv{'allocated_to_snapshot'}) {
system('lvremove', '-f', "clones/${lvname}_snap${snapnum}");
next;
}
if ($lv{'allocated_to_snapshot'} > 80) {
print "live extending ${lvname}_snap${snapnum}\n";
system('lvextend', '-f', '-l', '+20%LV', "clones/${lvname}_snap${snapnum}");
}
}
}
}
--
Ray Morris
support@bettercgi.com
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On Thu, 13 Oct 2011 10:28:56 -0700 (PDT)
Dusty Mabe <dustymabe@yahoo.com> wrote:
> Hi Everyone,
>
> I am interested to see if there is any support for automatically
> resizing an lvm snapshot when it becomes full or bypasses a certain
> utilization? There has been at least some interest in this in the
> past as I have found the following post in the mailman archives.
>
> http://www.redhat.com/archives/linux-lvm/2007-November/msg00016.html
>
>
> Also it looks like HP as performed at least a similar implementation
> of this type of feature in their own product.
>
> http://bizsupport1.austin.hp.com/bc/docs/support/SupportManual/c02054539/c02054539.pdf
>
>
>
> Thanks for any Help!!
>
> Dusty Mabe
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>
_______________________________________________
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https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
_______________________________________________
linux-lvm mailing list
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https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
