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<p id='t1' class='pln'><span class='str'>"""</span><span class='strut'> </span></p>
<p id='t2' class='pln'><span class='str'>Copyright (c) 2012-2013 RockStor, Inc. <http://rockstor.com></span><span class='strut'> </span></p>
<p id='t3' class='pln'><span class='str'>This file is part of RockStor.</span><span class='strut'> </span></p>
<p id='t4' class='pln'><span class='strut'> </span></p>
<p id='t5' class='pln'><span class='str'>RockStor is free software; you can redistribute it and/or modify</span><span class='strut'> </span></p>
<p id='t6' class='pln'><span class='str'>it under the terms of the GNU General Public License as published</span><span class='strut'> </span></p>
<p id='t7' class='pln'><span class='str'>by the Free Software Foundation; either version 2 of the License,</span><span class='strut'> </span></p>
<p id='t8' class='pln'><span class='str'>or (at your option) any later version.</span><span class='strut'> </span></p>
<p id='t9' class='pln'><span class='strut'> </span></p>
<p id='t10' class='pln'><span class='str'>RockStor is distributed in the hope that it will be useful, but</span><span class='strut'> </span></p>
<p id='t11' class='pln'><span class='str'>WITHOUT ANY WARRANTY; without even the implied warranty of</span><span class='strut'> </span></p>
<p id='t12' class='pln'><span class='str'>MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span><span class='strut'> </span></p>
<p id='t13' class='pln'><span class='str'>General Public License for more details.</span><span class='strut'> </span></p>
<p id='t14' class='pln'><span class='strut'> </span></p>
<p id='t15' class='pln'><span class='str'>You should have received a copy of the GNU General Public License</span><span class='strut'> </span></p>
<p id='t16' class='pln'><span class='str'>along with this program. If not, see <http://www.gnu.org/licenses/>.</span><span class='strut'> </span></p>
<p id='t17' class='pln'><span class='str'>"""</span><span class='strut'> </span></p>
<p id='t18' class='pln'><span class='strut'> </span></p>
<p id='t19' class='stm mis'><span class='key'>from</span> <span class='nam'>storageadmin</span><span class='op'>.</span><span class='nam'>models</span> <span class='key'>import</span> <span class='op'>(</span><span class='nam'>Share</span><span class='op'>,</span> <span class='nam'>Snapshot</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t20' class='stm mis'><span class='key'>from</span> <span class='nam'>storageadmin</span><span class='op'>.</span><span class='nam'>util</span> <span class='key'>import</span> <span class='nam'>handle_exception</span><span class='strut'> </span></p>
<p id='t21' class='stm mis'><span class='key'>from</span> <span class='nam'>fs</span><span class='op'>.</span><span class='nam'>btrfs</span> <span class='key'>import</span> <span class='op'>(</span><span class='nam'>add_clone</span><span class='op'>,</span> <span class='nam'>share_id</span><span class='op'>,</span> <span class='nam'>update_quota</span><span class='op'>,</span> <span class='nam'>mount_share</span><span class='op'>,</span><span class='strut'> </span></p>
<p id='t22' class='pln'> <span class='nam'>qgroup_create</span><span class='op'>,</span> <span class='nam'>set_property</span><span class='op'>,</span> <span class='nam'>remove_share</span><span class='op'>,</span><span class='strut'> </span></p>
<p id='t23' class='pln'> <span class='nam'>share_pqgroup_assign</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t24' class='stm mis'><span class='key'>from</span> <span class='nam'>rest_framework</span><span class='op'>.</span><span class='nam'>response</span> <span class='key'>import</span> <span class='nam'>Response</span><span class='strut'> </span></p>
<p id='t25' class='stm mis'><span class='key'>from</span> <span class='nam'>storageadmin</span><span class='op'>.</span><span class='nam'>serializers</span> <span class='key'>import</span> <span class='nam'>ShareSerializer</span><span class='strut'> </span></p>
<p id='t26' class='stm mis'><span class='key'>import</span> <span class='nam'>re</span><span class='strut'> </span></p>
<p id='t27' class='stm mis'><span class='key'>import</span> <span class='nam'>shutil</span><span class='strut'> </span></p>
<p id='t28' class='stm mis'><span class='key'>from</span> <span class='nam'>django</span><span class='op'>.</span><span class='nam'>conf</span> <span class='key'>import</span> <span class='nam'>settings</span><span class='strut'> </span></p>
<p id='t29' class='pln'><span class='strut'> </span></p>
<p id='t30' class='stm mis'><span class='key'>from</span> <span class='nam'>system</span><span class='op'>.</span><span class='nam'>osi</span> <span class='key'>import</span> <span class='nam'>run_command</span><span class='strut'> </span></p>
<p id='t31' class='pln'><span class='strut'> </span></p>
<p id='t32' class='pln'><span class='strut'> </span></p>
<p id='t33' class='stm mis'><span class='key'>def</span> <span class='nam'>create_repclone</span><span class='op'>(</span><span class='nam'>share</span><span class='op'>,</span> <span class='nam'>request</span><span class='op'>,</span> <span class='nam'>logger</span><span class='op'>,</span> <span class='nam'>snapshot</span><span class='op'>)</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t34' class='pln'> <span class='str'>"""</span><span class='strut'> </span></p>
<p id='t35' class='pln'><span class='str'> Variant of create_clone but where the share already exists and is to be</span><span class='strut'> </span></p>
<p id='t36' class='pln'><span class='str'> supplanted by a snapshot which is effectively moved into the shares prior</span><span class='strut'> </span></p>
<p id='t37' class='pln'><span class='str'> position, both in the db and on the file system. This is achieved thus:</span><span class='strut'> </span></p>
<p id='t38' class='pln'><span class='str'> Unmount target share - (via remove_share()).</span><span class='strut'> </span></p>
<p id='t39' class='pln'><span class='str'> Btrfs subvol delete target share (via remove_share()).</span><span class='strut'> </span></p>
<p id='t40' class='pln'><span class='str'> Remove prior target share mount point (dir).</span><span class='strut'> </span></p>
<p id='t41' class='pln'><span class='str'> Move snap source to target share's former location (becomes share on disk).</span><span class='strut'> </span></p>
<p id='t42' class='pln'><span class='str'> Update existing target share db entry with source snap's qgroup / usage.</span><span class='strut'> </span></p>
<p id='t43' class='pln'><span class='str'> Remove source snap's db entry: updated share db entry makes it redundant.</span><span class='strut'> </span></p>
<p id='t44' class='pln'><span class='str'> Remount share (which now represents the prior snap's subvol relocated).</span><span class='strut'> </span></p>
<p id='t45' class='pln'><span class='str'> :param share: Share object to be supplanted</span><span class='strut'> </span></p>
<p id='t46' class='pln'><span class='str'> :param request:</span><span class='strut'> </span></p>
<p id='t47' class='pln'><span class='str'> :param logger: Logger object to reference</span><span class='strut'> </span></p>
<p id='t48' class='pln'><span class='str'> :param snapshot: Source snapshot/quirk share object to supplant target.</span><span class='strut'> </span></p>
<p id='t49' class='pln'><span class='str'> :return: response of serialized share (in it's updated form)</span><span class='strut'> </span></p>
<p id='t50' class='pln'><span class='str'> """</span><span class='strut'> </span></p>
<p id='t51' class='stm mis'> <span class='key'>try</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t52' class='stm mis'> <span class='nam'>logger</span><span class='op'>.</span><span class='nam'>debug</span><span class='op'>(</span><span class='str'>'Supplanting share ({}) with '</span><span class='strut'> </span></p>
<p id='t53' class='pln'> <span class='str'>'snapshot ({}).'</span><span class='op'>.</span><span class='nam'>format</span><span class='op'>(</span><span class='nam'>share</span><span class='op'>.</span><span class='nam'>name</span><span class='op'>,</span> <span class='nam'>snapshot</span><span class='op'>.</span><span class='nam'>name</span><span class='op'>)</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t54' class='pln'> <span class='com'># We first strip our snapshot.name of any path as when we encounter the</span><span class='strut'> </span></p>
<p id='t55' class='pln'> <span class='com'># initially created receive subvol it is identified as a share with a</span><span class='strut'> </span></p>
<p id='t56' class='pln'> <span class='com'># snapshots location as it's subvol name (current quirk of import sys).</span><span class='strut'> </span></p>
<p id='t57' class='pln'> <span class='com'># E.g. first receive subvol/share-in-snapdir name example:</span><span class='strut'> </span></p>
<p id='t58' class='pln'> <span class='com'># ".snapshots/C583C37F-...1712B_sharename/sharename_19_replication_1".</span><span class='strut'> </span></p>
<p id='t59' class='pln'> <span class='com'># Subsequent more regular snapshots (in db as such) are named thus:</span><span class='strut'> </span></p>
<p id='t60' class='pln'> <span class='com'># "sharename_19_replication_2" or "sharename_19_replication_2" and on.</span><span class='strut'> </span></p>
<p id='t61' class='pln'> <span class='com'># The 19 in the above names is the generation of the replication task.</span><span class='strut'> </span></p>
<p id='t62' class='pln'> <span class='com'>#</span><span class='strut'> </span></p>
<p id='t63' class='pln'> <span class='com'># Normalise source name across initial quirk share & subsequent snaps.</span><span class='strut'> </span></p>
<p id='t64' class='stm mis'> <span class='nam'>source_name</span> <span class='op'>=</span> <span class='nam'>snapshot</span><span class='op'>.</span><span class='nam'>name</span><span class='op'>.</span><span class='nam'>split</span><span class='op'>(</span><span class='str'>'/'</span><span class='op'>)</span><span class='op'>[</span><span class='op'>-</span><span class='num'>1</span><span class='op'>]</span><span class='strut'> </span></p>
<p id='t65' class='pln'> <span class='com'># Note in the above we have to use Object.name for polymorphism, but</span><span class='strut'> </span></p>
<p id='t66' class='pln'> <span class='com'># our share is passed by it's subvol (potential fragility point).</span><span class='strut'> </span></p>
<p id='t67' class='stm mis'> <span class='nam'>snap_path</span> <span class='op'>=</span> <span class='str'>'{}{}/.snapshots/{}/{}'</span><span class='op'>.</span><span class='nam'>format</span><span class='op'>(</span><span class='nam'>settings</span><span class='op'>.</span><span class='nam'>MNT_PT</span><span class='op'>,</span><span class='strut'> </span></p>
<p id='t68' class='pln'> <span class='nam'>share</span><span class='op'>.</span><span class='nam'>pool</span><span class='op'>.</span><span class='nam'>name</span><span class='op'>,</span> <span class='nam'>share</span><span class='op'>.</span><span class='nam'>name</span><span class='op'>,</span><span class='strut'> </span></p>
<p id='t69' class='pln'> <span class='nam'>source_name</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t70' class='pln'> <span class='com'># eg /mnt2/poolname/.snapshots/sharename/snapname</span><span class='strut'> </span></p>
<p id='t71' class='stm mis'> <span class='nam'>share_path</span> <span class='op'>=</span> <span class='op'>(</span><span class='str'>'{}{}/{}'</span><span class='op'>.</span><span class='nam'>format</span><span class='op'>(</span><span class='nam'>settings</span><span class='op'>.</span><span class='nam'>MNT_PT</span><span class='op'>,</span> <span class='nam'>share</span><span class='op'>.</span><span class='nam'>pool</span><span class='op'>.</span><span class='nam'>name</span><span class='op'>,</span><span class='strut'> </span></p>
<p id='t72' class='pln'> <span class='nam'>share</span><span class='op'>.</span><span class='nam'>name</span><span class='op'>)</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t73' class='pln'> <span class='com'># eg /mnt2/poolname/sharename</span><span class='strut'> </span></p>
<p id='t74' class='pln'> <span class='com'># unmount and then subvol deletes our on disk share</span><span class='strut'> </span></p>
<p id='t75' class='stm mis'> <span class='nam'>remove_share</span><span class='op'>(</span><span class='nam'>share</span><span class='op'>.</span><span class='nam'>pool</span><span class='op'>,</span> <span class='nam'>share</span><span class='op'>.</span><span class='nam'>name</span><span class='op'>,</span> <span class='str'>'-1/-1'</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t76' class='pln'> <span class='com'># Remove read only flag on our snapshot subvol</span><span class='strut'> </span></p>
<p id='t77' class='stm mis'> <span class='nam'>set_property</span><span class='op'>(</span><span class='nam'>snap_path</span><span class='op'>,</span> <span class='str'>'ro'</span><span class='op'>,</span> <span class='str'>'false'</span><span class='op'>,</span> <span class='nam'>mount</span><span class='op'>=</span><span class='nam'>False</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t78' class='pln'> <span class='com'># Ensure removed share path is clean, ie remove mount point.</span><span class='strut'> </span></p>
<p id='t79' class='stm mis'> <span class='nam'>run_command</span><span class='op'>(</span><span class='op'>[</span><span class='str'>'/usr/bin/rm'</span><span class='op'>,</span> <span class='str'>'-rf'</span><span class='op'>,</span> <span class='nam'>share_path</span><span class='op'>]</span><span class='op'>,</span> <span class='nam'>throw</span><span class='op'>=</span><span class='nam'>False</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t80' class='pln'> <span class='com'># Now move snapshot to prior shares location. Given both a share and</span><span class='strut'> </span></p>
<p id='t81' class='pln'> <span class='com'># a snapshot are subvols, we effectively promote the snap to a share.</span><span class='strut'> </span></p>
<p id='t82' class='stm mis'> <span class='nam'>shutil</span><span class='op'>.</span><span class='nam'>move</span><span class='op'>(</span><span class='nam'>snap_path</span><span class='op'>,</span> <span class='nam'>share_path</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t83' class='pln'> <span class='com'># This should have re-established our just removed subvol.</span><span class='strut'> </span></p>
<p id='t84' class='pln'> <span class='com'># Supplant share db info with snap info to reflect new on disk state.</span><span class='strut'> </span></p>
<p id='t85' class='stm mis'> <span class='nam'>share</span><span class='op'>.</span><span class='nam'>qgroup</span> <span class='op'>=</span> <span class='nam'>snapshot</span><span class='op'>.</span><span class='nam'>qgroup</span><span class='strut'> </span></p>
<p id='t86' class='stm mis'> <span class='nam'>share</span><span class='op'>.</span><span class='nam'>rusage</span> <span class='op'>=</span> <span class='nam'>snapshot</span><span class='op'>.</span><span class='nam'>rusage</span><span class='strut'> </span></p>
<p id='t87' class='stm mis'> <span class='nam'>share</span><span class='op'>.</span><span class='nam'>eusage</span> <span class='op'>=</span> <span class='nam'>snapshot</span><span class='op'>.</span><span class='nam'>eusage</span><span class='strut'> </span></p>
<p id='t88' class='stm mis'> <span class='nam'>share</span><span class='op'>.</span><span class='nam'>save</span><span class='op'>(</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t89' class='pln'> <span class='com'># delete our now redundant snapshot/quirky share db entry</span><span class='strut'> </span></p>
<p id='t90' class='stm mis'> <span class='nam'>snapshot</span><span class='op'>.</span><span class='nam'>delete</span><span class='op'>(</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t91' class='pln'> <span class='com'># update our share's quota</span><span class='strut'> </span></p>
<p id='t92' class='stm mis'> <span class='nam'>update_quota</span><span class='op'>(</span><span class='nam'>share</span><span class='op'>.</span><span class='nam'>pool</span><span class='op'>,</span> <span class='nam'>share</span><span class='op'>.</span><span class='nam'>pqgroup</span><span class='op'>,</span> <span class='nam'>share</span><span class='op'>.</span><span class='nam'>size</span> <span class='op'>*</span> <span class='num'>1024</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t93' class='pln'> <span class='com'># mount our newly supplanted share</span><span class='strut'> </span></p>
<p id='t94' class='stm mis'> <span class='nam'>mnt_pt</span> <span class='op'>=</span> <span class='str'>'{}{}'</span><span class='op'>.</span><span class='nam'>format</span><span class='op'>(</span><span class='nam'>settings</span><span class='op'>.</span><span class='nam'>MNT_PT</span><span class='op'>,</span> <span class='nam'>share</span><span class='op'>.</span><span class='nam'>name</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t95' class='stm mis'> <span class='nam'>mount_share</span><span class='op'>(</span><span class='nam'>share</span><span class='op'>,</span> <span class='nam'>mnt_pt</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t96' class='stm mis'> <span class='key'>return</span> <span class='nam'>Response</span><span class='op'>(</span><span class='nam'>ShareSerializer</span><span class='op'>(</span><span class='nam'>share</span><span class='op'>)</span><span class='op'>.</span><span class='nam'>data</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t97' class='stm mis'> <span class='key'>except</span> <span class='nam'>Exception</span> <span class='key'>as</span> <span class='nam'>e</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t98' class='stm mis'> <span class='nam'>handle_exception</span><span class='op'>(</span><span class='nam'>e</span><span class='op'>,</span> <span class='nam'>request</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t99' class='pln'><span class='strut'> </span></p>
<p id='t100' class='pln'><span class='strut'> </span></p>
<p id='t101' class='stm mis'><span class='key'>def</span> <span class='nam'>create_clone</span><span class='op'>(</span><span class='nam'>share</span><span class='op'>,</span> <span class='nam'>new_name</span><span class='op'>,</span> <span class='nam'>request</span><span class='op'>,</span> <span class='nam'>logger</span><span class='op'>,</span> <span class='nam'>snapshot</span><span class='op'>=</span><span class='nam'>None</span><span class='op'>)</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t102' class='pln'> <span class='com'># if snapshot is None, create clone of the share.</span><span class='strut'> </span></p>
<p id='t103' class='pln'> <span class='com'># If it's not, then clone it.</span><span class='strut'> </span></p>
<p id='t104' class='stm mis'> <span class='key'>if</span> <span class='op'>(</span><span class='nam'>re</span><span class='op'>.</span><span class='nam'>match</span><span class='op'>(</span><span class='nam'>settings</span><span class='op'>.</span><span class='nam'>SHARE_REGEX</span> <span class='op'>+</span> <span class='str'>'$'</span><span class='op'>,</span> <span class='nam'>new_name</span><span class='op'>)</span> <span class='key'>is</span> <span class='nam'>None</span><span class='op'>)</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t105' class='stm mis'> <span class='nam'>e_msg</span> <span class='op'>=</span> <span class='op'>(</span><span class='str'>'Clone name is invalid. It must start with a letter and can'</span><span class='strut'> </span></p>
<p id='t106' class='pln'> <span class='str'>' contain letters, digits, _, . and - characters'</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t107' class='stm mis'> <span class='nam'>handle_exception</span><span class='op'>(</span><span class='nam'>Exception</span><span class='op'>(</span><span class='nam'>e_msg</span><span class='op'>)</span><span class='op'>,</span> <span class='nam'>request</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t108' class='stm mis'> <span class='key'>if</span> <span class='op'>(</span><span class='nam'>Share</span><span class='op'>.</span><span class='nam'>objects</span><span class='op'>.</span><span class='nam'>filter</span><span class='op'>(</span><span class='nam'>name</span><span class='op'>=</span><span class='nam'>new_name</span><span class='op'>)</span><span class='op'>.</span><span class='nam'>exists</span><span class='op'>(</span><span class='op'>)</span><span class='op'>)</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t109' class='stm mis'> <span class='nam'>e_msg</span> <span class='op'>=</span> <span class='op'>(</span><span class='str'>'Another Share with name: %s already exists.'</span> <span class='op'>%</span> <span class='nam'>new_name</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t110' class='stm mis'> <span class='nam'>handle_exception</span><span class='op'>(</span><span class='nam'>Exception</span><span class='op'>(</span><span class='nam'>e_msg</span><span class='op'>)</span><span class='op'>,</span> <span class='nam'>request</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t111' class='stm mis'> <span class='key'>if</span> <span class='op'>(</span><span class='nam'>Snapshot</span><span class='op'>.</span><span class='nam'>objects</span><span class='op'>.</span><span class='nam'>filter</span><span class='op'>(</span><span class='nam'>share</span><span class='op'>=</span><span class='nam'>share</span><span class='op'>,</span> <span class='nam'>name</span><span class='op'>=</span><span class='nam'>new_name</span><span class='op'>)</span><span class='op'>.</span><span class='nam'>exists</span><span class='op'>(</span><span class='op'>)</span><span class='op'>)</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t112' class='stm mis'> <span class='nam'>e_msg</span> <span class='op'>=</span> <span class='op'>(</span><span class='str'>'Snapshot with name: %s already exists for the '</span><span class='strut'> </span></p>
<p id='t113' class='pln'> <span class='str'>'share: %s. Choose a different name'</span> <span class='op'>%</span><span class='strut'> </span></p>
<p id='t114' class='pln'> <span class='op'>(</span><span class='nam'>new_name</span><span class='op'>,</span> <span class='nam'>share</span><span class='op'>.</span><span class='nam'>name</span><span class='op'>)</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t115' class='stm mis'> <span class='nam'>handle_exception</span><span class='op'>(</span><span class='nam'>Exception</span><span class='op'>(</span><span class='nam'>e_msg</span><span class='op'>)</span><span class='op'>,</span> <span class='nam'>request</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t116' class='pln'><span class='strut'> </span></p>
<p id='t117' class='stm mis'> <span class='key'>try</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t118' class='stm mis'> <span class='nam'>share_name</span> <span class='op'>=</span> <span class='nam'>share</span><span class='op'>.</span><span class='nam'>subvol_name</span><span class='strut'> </span></p>
<p id='t119' class='stm mis'> <span class='nam'>snap</span> <span class='op'>=</span> <span class='nam'>None</span><span class='strut'> </span></p>
<p id='t120' class='stm mis'> <span class='key'>if</span> <span class='op'>(</span><span class='nam'>snapshot</span> <span class='key'>is</span> <span class='key'>not</span> <span class='nam'>None</span><span class='op'>)</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t121' class='stm mis'> <span class='nam'>snap</span> <span class='op'>=</span> <span class='nam'>snapshot</span><span class='op'>.</span><span class='nam'>real_name</span><span class='strut'> </span></p>
<p id='t122' class='stm mis'> <span class='nam'>add_clone</span><span class='op'>(</span><span class='nam'>share</span><span class='op'>.</span><span class='nam'>pool</span><span class='op'>,</span> <span class='nam'>share_name</span><span class='op'>,</span> <span class='nam'>new_name</span><span class='op'>,</span> <span class='nam'>snapshot</span><span class='op'>=</span><span class='nam'>snap</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t123' class='stm mis'> <span class='nam'>snap_id</span> <span class='op'>=</span> <span class='nam'>share_id</span><span class='op'>(</span><span class='nam'>share</span><span class='op'>.</span><span class='nam'>pool</span><span class='op'>,</span> <span class='nam'>new_name</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t124' class='stm mis'> <span class='nam'>qgroup_id</span> <span class='op'>=</span> <span class='op'>(</span><span class='str'>'0/%s'</span> <span class='op'>%</span> <span class='nam'>snap_id</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t125' class='stm mis'> <span class='nam'>pqid</span> <span class='op'>=</span> <span class='nam'>qgroup_create</span><span class='op'>(</span><span class='nam'>share</span><span class='op'>.</span><span class='nam'>pool</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t126' class='stm mis'> <span class='nam'>new_share</span> <span class='op'>=</span> <span class='nam'>Share</span><span class='op'>(</span><span class='nam'>pool</span><span class='op'>=</span><span class='nam'>share</span><span class='op'>.</span><span class='nam'>pool</span><span class='op'>,</span> <span class='nam'>qgroup</span><span class='op'>=</span><span class='nam'>qgroup_id</span><span class='op'>,</span> <span class='nam'>pqgroup</span><span class='op'>=</span><span class='nam'>pqid</span><span class='op'>,</span><span class='strut'> </span></p>
<p id='t127' class='pln'> <span class='nam'>name</span><span class='op'>=</span><span class='nam'>new_name</span><span class='op'>,</span> <span class='nam'>size</span><span class='op'>=</span><span class='nam'>share</span><span class='op'>.</span><span class='nam'>size</span><span class='op'>,</span> <span class='nam'>subvol_name</span><span class='op'>=</span><span class='nam'>new_name</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t128' class='stm mis'> <span class='nam'>new_share</span><span class='op'>.</span><span class='nam'>save</span><span class='op'>(</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t129' class='stm mis'> <span class='key'>if</span> <span class='nam'>pqid</span> <span class='key'>is</span> <span class='key'>not</span> <span class='nam'>settings</span><span class='op'>.</span><span class='nam'>MODEL_DEFS</span><span class='op'>[</span><span class='str'>'pqgroup'</span><span class='op'>]</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t130' class='stm mis'> <span class='nam'>update_quota</span><span class='op'>(</span><span class='nam'>new_share</span><span class='op'>.</span><span class='nam'>pool</span><span class='op'>,</span> <span class='nam'>pqid</span><span class='op'>,</span> <span class='nam'>new_share</span><span class='op'>.</span><span class='nam'>size</span> <span class='op'>*</span> <span class='num'>1024</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t131' class='stm mis'> <span class='nam'>share_pqgroup_assign</span><span class='op'>(</span><span class='nam'>pqid</span><span class='op'>,</span> <span class='nam'>new_share</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t132' class='pln'> <span class='com'># Mount our new clone share.</span><span class='strut'> </span></p>
<p id='t133' class='stm mis'> <span class='nam'>mnt_pt</span> <span class='op'>=</span> <span class='str'>'{}{}'</span><span class='op'>.</span><span class='nam'>format</span><span class='op'>(</span><span class='nam'>settings</span><span class='op'>.</span><span class='nam'>MNT_PT</span><span class='op'>,</span> <span class='nam'>new_name</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t134' class='stm mis'> <span class='nam'>mount_share</span><span class='op'>(</span><span class='nam'>new_share</span><span class='op'>,</span> <span class='nam'>mnt_pt</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t135' class='stm mis'> <span class='key'>return</span> <span class='nam'>Response</span><span class='op'>(</span><span class='nam'>ShareSerializer</span><span class='op'>(</span><span class='nam'>new_share</span><span class='op'>)</span><span class='op'>.</span><span class='nam'>data</span><span class='op'>)</span><span class='strut'> </span></p>
<p id='t136' class='stm mis'> <span class='key'>except</span> <span class='nam'>Exception</span> <span class='key'>as</span> <span class='nam'>e</span><span class='op'>:</span><span class='strut'> </span></p>
<p id='t137' class='stm mis'> <span class='nam'>handle_exception</span><span class='op'>(</span><span class='nam'>e</span><span class='op'>,</span> <span class='nam'>request</span><span class='op'>)</span><span class='strut'> </span></p>
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