Hey guys, I notice that the work for this has now been complete (bugzilla report # 427298 ). If anyone is interested I wrote a small how-to on using the automatic resize for snapshot LVs at http://dustymabe.com/2012/03/04/automatically-extend-lvm-snapshots/ ; Dusty ________________________________ From: Ray Morris <support@bettercgi.com> To: Dusty Mabe <dustymabe@yahoo.com> Sent: Friday, October 14, 2011 10:22 AM Subject: Re: dynamic lvm snapshots (auto-resize) I don't really know anything about the work being done. -- Ray Morris support@bettercgi.com Strongbox - The next generation in site security: http://www.bettercgi.com/strongbox/ Throttlebox - Intelligent Bandwidth Control http://www.bettercgi.com/throttlebox/ Strongbox / Throttlebox affiliate program: http://www.bettercgi.com/affiliates/user/register.php On Fri, 14 Oct 2011 06:07:57 -0700 (PDT) Dusty Mabe <dustymabe@yahoo.com> wrote: > 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: ASO- 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}"); } > } > } > } _______________________________________________ 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/
