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save_lv.cgi
#!/usr/bin/perl # save_lv.cgi # Create, update or delete a logical volume require './lvm-lib.pl'; &ReadParse(); @lvs = &list_logical_volumes($in{'vg'}); ($vg) = grep { $_->{'name'} eq $in{'vg'} } &list_volume_groups(); $vg || &error($text{'vg_egone'}); if ($in{'lv'}) { ($lv) = grep { $_->{'name'} eq $in{'lv'} } @lvs; $lv || &error($text{'lv_egone'}); $oldlv = { %$lv }; } if ($in{'confirm'}) { # Delete the logical volume &error_setup($text{'lv_err2'}); $err = &delete_logical_volume($lv); &error("<pre>$err</pre>") if ($err); &webmin_log("delete", "lv", $in{'lv'}, $lv); &redirect("index.cgi?mode=lvs"); } elsif ($in{'confirm_rollback'}) { # Rollback the Snapshot &error_setup($text{'lv_err3'}); $err = &rollback_snapshot($lv); &error("<pre>$err</pre>") if ($err); &webmin_log("rollback", "lv", $in{'lv'}, $lv); &redirect("index.cgi?mode=lvs"); } elsif ($in{'delete'}) { # Ask the user if he is sure &ui_print_header(undef, $text{'lv_delete'}, ""); print "<center>\n"; print &ui_form_start("save_lv.cgi"); print &ui_hidden("vg", $in{'vg'}); print &ui_hidden("lv", $in{'lv'}); print "<b>",&text($lv->{'is_snap'} ? 'lv_rusnap' : 'lv_rusure', "<tt>$lv->{'device'}</tt>"),"</b><p>\n"; if ($lv->{'thin'}) { @thinc = grep { $_->{'thin_in'} eq $lv->{'name'} } @lvs; if (@thinc) { print "<b>",&text('lv_delthin', scalar(@thinc)),"</b><p>\n"; } } print &ui_form_end([ [ 'confirm', $text{'lv_deleteok'} ] ]); print "</center>\n"; &ui_print_footer("index.cgi?mode=lvs", $text{'index_return3'}); } elsif ($in{'rollback'}) { # Ask the user if he is sure &ui_print_header(undef, $text{'lv_snaprollback'}, ""); print "<center>\n"; print &ui_form_start("save_lv.cgi"); print &ui_hidden("vg", $in{'vg'}); print &ui_hidden("lv", $in{'lv'}); print "<b>",&text('lv_rusnaprb', "<tt>$lv->{'device'}</tt>"),"</b><p>\n"; print &ui_form_end([ [ 'confirm_rollback', $text{'lv_snaprollbackok'} ] ]); print "</center>\n"; &ui_print_footer("index.cgi?mode=lvs", $text{'index_return3'}); } else { # Validate inputs &error_setup($text{'lv_err'}); $in{'name'} =~ /^[A-Za-z0-9\.\-\_]+$/ || &error($text{'lv_ename'}); ($same) = grep { $_->{'name'} eq $in{'name'} } &list_logical_volumes($in{'vg'}); $same && (!$in{'lv'} || $in{'lv'} ne $in{'name'}) && &error($text{'lv_esame'}); if ($in{'size_mode'} == -1) { # Cannot change $size = undef; } elsif ($in{'size_mode'} == 0) { # Absolute size $in{'size'} =~ /^\d+$/ || &error($text{'lv_esize'}); $size = $in{'size'}; if (defined($in{'size_units'})) { # Convert selected units to kB $size *= $in{'size_units'}/1024; } $sizeof = undef; } elsif ($in{'size_mode'} == 1) { # Size of VG $in{'vgsize'} =~ /^\d+$/ && $in{'vgsize'} > 0 && $in{'vgsize'} <= 100 || &error($text{'lv_evgsize'}); $size = $in{'vgsize'}; $sizeof = 'VG'; } elsif ($in{'size_mode'} == 2) { # Size of free space if (!$in{'lv'}) { $in{'freesize'} =~ /^\d+$/ && $in{'freesize'} > 0 && $in{'freesize'} <= 100 || &error($text{'lv_efreesize'}); } $size = $in{'freesize'}; $sizeof = 'FREE'; } elsif ($in{'size_mode'} == 3) { # Size of some PV $in{'pvsize'} =~ /^\d+$/ && $in{'pvsize'} > 0 && $in{'pvsize'} <= 100 || &error($text{'lv_epvsize'}); $size = $in{'pvsize'}; $sizeof = $in{'pvof'}; } elsif ($in{'size_mode'} == 4) { # Size in kB $in{'sizekb'} =~ /^\d+$/ || &error($text{'lv_esize'}); $size = $in{'sizekb'}; $sizeof = undef; } else { &error("Invalid size mode ".$in{'size_mode'}); } $in{'snap'} || $in{'lv'} || $in{'stripe_def'} || $in{'stripe'} =~ /^[1-9]\d*$/ || &error($text{'lv_estripe'}); if (!$in{'lv'}) { # Just create the logical volume $lv->{'vg'} = $in{'vg'}; $lv->{'name'} = $in{'name'}; $lv->{'size'} = $size; $lv->{'size_of'} = $sizeof; if ($in{'snap'}) { $lv->{'is_snap'} = 1; $lv->{'snapof'} = $in{'snapof'}; } else { $lv->{'perm'} = $in{'perm'}; $lv->{'alloc'} = $in{'alloc'}; $lv->{'stripe'} = $in{'stripe'} if (!$in{'stripe_def'}); $lv->{'stripesize'} = $in{'stripesize'}; $lv->{'readahead'} = $in{'readahead'}; } $lv->{'thin_in'} = $in{'thin'}; $err = &create_logical_volume($lv); &error("<pre>$err</pre>") if ($err); &webmin_log("create", "lv", $in{'name'}, $lv); } elsif ($lv->{'is_snap'}) { # Modifying a snapshot $oldsize = $lv->{'cow_size'} || $lv->{'size'}; if (defined($size) && $oldsize != $size) { $err = &resize_snapshot_volume($lv, $size); &error("<pre>$err</pre>") if ($err); $lv->{'size'} = $size; } if ($lv->{'name'} ne $in{'name'}) { # Need to rename $err = &rename_logical_volume($lv, $in{'name'}); &error("<pre>$err</pre>") if ($err); $lv->{'name'} = $in{'name'}; } } else { # Modifying the logical volume @stat = &device_status($lv->{'device'}); if ($lv->{'size'} != $size) { # Is the new size too big? local $nblocks = &round_up( $size * 1.0 / $vg->{'pe_size'}); local $oblocks = &round_up( $lv->{'size'} * 1.0 / $vg->{'pe_size'}); if ($vg->{'pe_alloc'} - $oblocks + $nblocks > $vg->{'pe_total'}) { #&error(&text('lv_toobig', $nblocks, "$vg->{'pe_size'} kB", $vg->{'pe_total'} - $vg->{'pe_alloc'})); } local $realsize = $nblocks * $vg->{'pe_size'}; if ($in{'size_mode'} == 2) { # Calculate free VG space and add current LV size to get the actual new LV size $realsize = ($vg->{'pe_total'}*$vg->{'pe_size'})-($vg->{'pe_alloc'}*$vg->{'pe_size'})+$lv->{'size'}; } if ($in{'sizeconfirm'}) { # Just resize the logical volume $err = &resize_logical_volume($lv, $realsize); &error("<pre>$err</pre>") if ($err); } else { local $can = &can_resize_lv_stat(@stat); if (($can == 2 || $can == 1 && $realsize > $lv->{'size'}) && $stat[1]) { # Attempt to resize FS properly $err = &resize_filesystem($lv, $stat[1], $realsize); if ($err) { $err = &text('resize_fs', $stat[1], "</center><pre>$err". "</pre><center>"); } } elsif ($stat[2]) { # Cannot resize while mounted &error($can == 1 ? $text{'resize_emounted2'} : $text{'resize_emounted'}); } else { # Cannot resize .. ask for confirmation $err = @stat && $stat[1] ne '*' && $stat[1] ne 'auto' ? &text('resize_mesg', $stat[1]) : $text{'resize_mesg2'}; } if ($err) { &ui_print_header(undef, $text{'resize_title'}, ""); print "<center><form action=save_lv.cgi>\n"; foreach $i (keys %in) { print "<input type=hidden name=$i value='$in{$i}'>\n"; } print "<b>$err</b> <p>\n"; print "<input type=submit name=sizeconfirm value='$text{'resize_ok'}'>\n"; print "</form></center>\n"; &ui_print_footer("index.cgi?mode=lvs", $text{'index_return3'}); exit; } } $lv->{'size'} = $realsize; } if ($lv->{'perm'} ne $in{'perm'} || $lv->{'alloc'} ne $in{'alloc'} || $lv->{'readahead'} ne $in{'readahead'}) { # Need to change options $lv->{'perm'} = $in{'perm'}; $lv->{'alloc'} = $in{'alloc'}; $lv->{'readahead'} = $in{'readahead'}; $err = &change_logical_volume($lv, $oldlv); &error("<pre>$err</pre>") if ($err); } if ($lv->{'name'} ne $in{'name'}) { # Need to rename $err = &rename_logical_volume($lv, $in{'name'}); &error("<pre>$err</pre>") if ($err); $lv->{'name'} = $in{'name'}; } &webmin_log("modify", "lv", $in{'lv'}, $lv); } &redirect("index.cgi?mode=lvs"); } sub round_up { local ($n) = @_; if (int($n) != $n) { return int($n)+1; } return $n; }