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implement map_volume and unmap_volume

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This allows to request a mapped device/path explicitly, regardles of
the storage option, eg. krbd option in the RBDplugin.

Bump of the storage ABI => 2

Co-authored-by: Alwin Antreich <a.antreich@proxmox.com>
Signed-off-by: Dietmar Maurer <dietmar@proxmox.com>
This commit is contained in:
Dietmar Maurer
2018-11-08 14:05:17 +01:00
committed by Thomas Lamprecht
parent 8b6b710265
commit 40d698932e
3 changed files with 86 additions and 33 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
PVE/Storage/Plugin.pm
View File

@ -949,6 +949,18 @@ sub deactivate_storage {
# do nothing by default
}
sub map_volume {
my ($class, $storeid, $scfg, $volname, $snapname) = @_;
return undef;
}
sub unmap_volume {
my ($class, $storeid, $scfg, $volname, $snapname) = @_;
return 1;
}
sub activate_volume {
my ($class, $storeid, $scfg, $volname, $snapname, $cache) = @_;

81
PVE/Storage/RBDPlugin.pm
View File

@ -74,8 +74,6 @@ my $librados_connect = sub {
my $krbd_feature_disable = sub {
my ($scfg, $storeid, $name) = @_;
return 1 if !$scfg->{krbd};
my ($major, undef, undef, undef) = ceph_version();
return 1 if $major < 10;
@ -259,7 +257,7 @@ sub properties {
type => 'string',
},
krbd => {
description => "Access rbd through krbd kernel module.",
description => "Always access rbd through krbd kernel module.",
type => 'boolean',
},
};
@ -428,8 +426,6 @@ sub clone_image {
run_rbd_command($cmd, errmsg => "rbd clone '$basename' error");
&$krbd_feature_disable($scfg, $storeid, $name);
return $newvol;
}
@ -445,8 +441,6 @@ sub alloc_image {
my $cmd = &$rbd_cmd($scfg, $storeid, 'create', '--image-format' , 2, '--size', int(($size+1023)/1024), $name);
run_rbd_command($cmd, errmsg => "rbd create $name' error");
&$krbd_feature_disable($scfg, $storeid, $name);
return $name;
}
@ -544,21 +538,54 @@ sub deactivate_storage {
return 1;
}
my $get_kernel_device_name = sub {
my ($pool, $name) = @_;
return "/dev/rbd/$pool/$name";
};
sub map_volume {
my ($class, $storeid, $scfg, $volname, $snapname) = @_;
my ($vtype, $name, $vmid) = $class->parse_volname($volname);
$name .= '@'.$snapname if $snapname;
my $pool = $scfg->{pool} ? $scfg->{pool} : 'rbd';
my $kerneldev = $get_kernel_device_name->($pool, $name);
return $kerneldev if -b $kerneldev; # already mapped
&$krbd_feature_disable($scfg, $storeid, $name);
my $cmd = &$rbd_cmd($scfg, $storeid, 'map', $name);
run_rbd_command($cmd, errmsg => "can't map rbd volume $name");
return $kerneldev;
}
sub unmap_volume {
my ($class, $storeid, $scfg, $volname, $snapname) = @_;
my ($vtype, $name, $vmid) = $class->parse_volname($volname);
$name .= '@'.$snapname if $snapname;
my $pool = $scfg->{pool} ? $scfg->{pool} : 'rbd';
my $kerneldev = $get_kernel_device_name->($pool, $name);
if (-b $kerneldev) {
my $cmd = &$rbd_cmd($scfg, $storeid, 'unmap', $kerneldev);
run_rbd_command($cmd, errmsg => "can't unmap rbd device $kerneldev");
}
return 1;
}
sub activate_volume {
my ($class, $storeid, $scfg, $volname, $snapname, $cache) = @_;
return 1 if !$scfg->{krbd};
my ($vtype, $name, $vmid) = $class->parse_volname($volname);
my $pool = $scfg->{pool} ? $scfg->{pool} : 'rbd';
my $path = "/dev/rbd/$pool/$name";
$path .= '@'.$snapname if $snapname;
return if -b $path;
$name .= '@'.$snapname if $snapname;
my $cmd = &$rbd_cmd($scfg, $storeid, 'map', $name);
run_rbd_command($cmd, errmsg => "can't mount rbd volume $name");
$class->map_volume($storeid, $scfg, $volname, $snapname) if $scfg->{krbd};
return 1;
}
@ -566,17 +593,7 @@ sub activate_volume {
sub deactivate_volume {
my ($class, $storeid, $scfg, $volname, $snapname, $cache) = @_;
return 1 if !$scfg->{krbd};
my ($vtype, $name, $vmid) = $class->parse_volname($volname);
my $pool = $scfg->{pool} ? $scfg->{pool} : 'rbd';
my $path = "/dev/rbd/$pool/$name";
$path .= '@'.$snapname if $snapname;
return if ! -b $path;
my $cmd = &$rbd_cmd($scfg, $storeid, 'unmap', $path);
run_rbd_command($cmd, errmsg => "can't unmap rbd volume $name");
$class->unmap_volume($storeid, $scfg, $volname, $snapname);
return 1;
}
@ -592,7 +609,7 @@ sub volume_size_info {
sub volume_resize {
my ($class, $scfg, $storeid, $volname, $size, $running) = @_;
return 1 if $running && !$scfg->{krbd};
return 1 if $running && !$scfg->{krbd}; # FIXME???
my ($vtype, $name, $vmid) = $class->parse_volname($volname);
@ -623,7 +640,7 @@ sub volume_snapshot_rollback {
sub volume_snapshot_delete {
my ($class, $scfg, $storeid, $volname, $snap, $running) = @_;
return 1 if $running && !$scfg->{krbd};
return 1 if $running && !$scfg->{krbd}; # FIXME: ????
$class->deactivate_volume($storeid, $scfg, $volname, $snap, {});