0.12.3 doesn't remove any snapshots if there is a zfs hold on one of them

[rottegift]

If there is a zfs hold on a snapshot of the right format on the destination, the combined zfs destroy will fail, and snapshots will accumulate on the destination.

The "dataset is busy" below is caused by "zfs hold keep pool/from_src/user@ 2013-04-03-072351" (for example).

The target is OmniOS r151010.

Ideally, a failure of a combined destroy would try again omitting the snapshots complained about in the error message.

Alternatively (or additionally), a failure of a combined destroy should try again with a single zfs destroy per snapshot.

(Snapshot destruction may fail for other reasons, for instance if one is cloned or mounted; combined zfs destroys will destroy nothing in those cases too.)

Presumably this also affects removal of snapshots on the source as well.

ssh -o Compression=yes -o CompressionLevel=1 -o Cipher=arcfour -o batchMode=yes -o ConnectTimeout=3 [email protected] zfs destroy 'pool/from_src/user@2013-04-03-072351,2013-11-15-145353,2013-11-16-145351,2013-11-17-145349,2013-11-18-145347,2013-11-19-145345,2013-11-20-145342,2013-11-26-152014,2013-12-07-013608,2013-12-08-013606,2013-12-11-133558,2013-12-16-175846,2013-12-17-175844,2013-12-18-175842,2014-01-15-223040,2014-01-16-103039,2014-01-16-134236,2014-01-16-151116,2014-01-16-211115,2014-01-17-031114,2014-01-17-091114,2014-01-17-211112,2014-01-18-031113,2014-01-18-091111,2014-01-18-151111,2014-01-18-211110,2014-01-19-031110,2014-01-19-091109,2014-01-19-151108,2014-01-19-211108,2014-01-20-031107,2014-01-20-091107,2014-01-20-151106,2014-01-20-211106,2014-01-21-031105,2014-01-21-091104,2014-01-21-111946,2014-01-22-032608,2014-01-22-070446,2014-01-22-075959,2014-01-22-121843,2014-01-22-150741,2014-01-22-161841,2014-01-22-175854,2014-01-23-014254,2014-01-23-033448,2014-01-23-033536,2014-01-23-033639,2014-01-23-033843,2014-01-23-233752,2014-01-24-033751,2014-01-24-043455,2014-01-24-083454,2014-01-24-123454,2014-01-24-163454,2014-01-24-203453,2014-01-25-003453,2014-01-25-043452,2014-01-25-073550,2014-01-25-113550,2014-01-25-153549,2014-01-25-193549,2014-01-25-233548,2014-01-26-033548,2014-01-26-073548,2014-01-26-113547,2014-01-26-153547,2014-01-26-193547,2014-01-26-233546,2014-01-27-033546,2014-01-27-073546,2014-01-27-113545,2014-01-27-153545,2014-01-27-193544,2014-01-27-233544,2014-01-28-012309,2014-01-28-025401,2014-01-28-065401,2014-01-28-105401,2014-01-28-145400,2014-01-28-185400,2014-01-28-225359,2014-01-29-025359,2014-01-29-065359,2014-01-29-105358,2014-01-29-145358,2014-01-29-185358,2014-01-29-225357,2014-01-30-065357,2014-01-30-105356,2014-01-30-145356,2014-01-30-172635,2014-01-30-212635,2014-01-31-012634,2014-01-31-052634,2014-01-31-092634,2014-01-31-132633,2014-01-31-172633,2014-01-31-212633,2014-02-01-012632,2014-02-01-052632,2014-02-01-092632,2014-02-01-132631,2014-02-01-172631,2014-02-01-212631,2014-02-02-012630,2014-02-02-052630,2014-02-02-092630,2014-02-02-132629,2014-02-02-172629,2014-02-02-212628,2014-02-02-230350,2014-02-03-030350,2014-02-03-070350,2014-02-03-110349,2014-02-03-150349,2014-02-03-190349,2014-02-03-230348,2014-02-04-030348,2014-02-04-070348,2014-02-04-110347,2014-02-04-150347,2014-02-04-190346,2014-02-04-230346,2014-02-05-030346,2014-02-05-070345,2014-02-05-110345,2014-02-05-150345,2014-02-05-190344,2014-02-05-230344,2014-02-06-063619,2014-02-06-103619,2014-02-06-143618,2014-02-06-183618,2014-02-06-223618,2014-02-07-023617,2014-02-07-063617,2014-02-07-103616,2014-02-07-143616,2014-02-07-183616,2014-02-07-223615,2014-02-08-023615,2014-02-08-063615,2014-02-08-103614,2014-02-08-143614,2014-02-08-165652,2014-02-08-205652,2014-02-09-005651,2014-02-09-045651,2014-02-09-085651,2014-02-09-125650,2014-02-09-165650,2014-02-09-205650,2014-02-10-031215,2014-02-10-045649,2014-02-10-085649,2014-02-10-125648,2014-02-10-165648,2014-02-10-205647,2014-02-11-005647,2014-02-11-045647,2014-02-11-085646,2014-02-11-125646,2014-02-11-165646,2014-02-11-205645,2014-02-12-005645,2014-02-12-045645,2014-02-12-085644,2014-02-12-125644,2014-02-12-165643,2014-02-12-205643,2014-02-13-035825,2014-02-13-075825,2014-02-13-115824,2014-02-13-155824,2014-02-13-195824,2014-02-13-235823,2014-02-14-035823,2014-02-14-075823,2014-02-14-115822,2014-02-14-155822,2014-02-14-195822,2014-02-14-235821,2014-02-15-035821,2014-02-15-075820,2014-02-15-115820,2014-02-15-155820,2014-02-15-195819,2014-02-15-235819,2014-02-16-035819,2014-02-16-075818,2014-02-16-115818,2014-02-16-155818,2014-02-16-163011,2014-02-16-180743,2014-02-16-204650,2014-02-17-004650,2014-02-17-044650,2014-02-17-084649,2014-02-17-124649,2014-02-17-164649,2014-02-17-204648,2014-02-18-004648,2014-02-18-044648,2014-02-18-084647,2014-02-18-124647,2014-02-18-164647,2014-02-18-204646,2014-02-19-004646,2014-02-19-044646,2014-02-19-084645,2014-02-19-124645,2014-02-19-164644,2014-02-19-173601,2014-02-19-180842,2014-02-19-201717,2014-02-20-041716,2014-02-20-081716,2014-02-20-121715,2014-02-20-161715,2014-02-20-201715,2014-02-21-001714,2014-02-21-041714,2014-02-21-081714,2014-02-21-121713,2014-02-21-161713,2014-02-21-201713,2014-02-22-001712,2014-02-22-041712,2014-02-22-081711,2014-02-22-121711,2014-02-22-161711,2014-02-22-201710,2014-02-23-001710,2014-02-23-041710,2014-02-23-081709,2014-02-23-121709,2014-02-23-161709,2014-02-23-201708,2014-02-24-001708,2014-02-24-041708,2014-02-24-142057,2014-02-24-182057,2014-02-24-222056,2014-02-25-022056,2014-02-25-062056,2014-02-25-102055,2014-02-25-142055,2014-02-25-182055,2014-02-25-222054,2014-02-26-022054,2014-02-26-062054,2014-02-26-102053,2014-02-26-142053,2014-02-26-182053,2014-02-26-224400,2014-02-27-030442,2014-02-27-042940,2014-02-27-142856,2014-02-27-145902,2014-02-27-155153,2014-02-27-195152,2014-02-27-235152,2014-02-28-035151,2014-02-28-075151,2014-02-28-115151,2014-02-28-155150,2014-02-28-195150,2014-02-28-235150,2014-03-01-035149,2014-03-01-075149,2014-03-01-115148,2014-03-01-155148,2014-03-01-195148,2014-03-01-235147,2014-03-02-035147,2014-03-02-075147,2014-03-02-115146,2014-03-02-155146,2014-03-02-195146,2014-03-02-235145,2014-03-03-035145,2014-03-03-075145,2014-03-03-115144,2014-03-03-155144,2014-03-03-195144,2014-03-03-235143,2014-03-04-035143,2014-03-04-075143,2014-03-04-115142,2014-03-04-155142,2014-03-04-195141,2014-03-04-235141,2014-03-05-035141,2014-03-05-075141,2014-03-05-115140,2014-03-05-134721,2014-03-05-174721,2014-03-05-214720,2014-03-06-054719,2014-03-06-094719,2014-03-06-134719,2014-03-06-174718,2014-03-06-214718,2014-03-07-014718,2014-03-07-054717,2014-03-07-094717,2014-03-07-134717,2014-03-07-174716,2014-03-07-214716,2014-03-08-014716,2014-03-08-054715,2014-03-08-094715,2014-03-08-134715,2014-03-08-174714,2014-03-08-214714,2014-03-09-014713,2014-03-09-054713,2014-03-09-094713,2014-03-09-134712,2014-03-09-174712,2014-03-09-214712,2014-03-10-014711,2014-03-10-054711,2014-03-10-094711,2014-03-10-134710,2014-03-10-174710,2014-03-10-214710,2014-03-11-014709,2014-03-11-054709,2014-03-11-094708,2014-03-11-134708,2014-03-11-174708,2014-03-11-214707,2014-03-12-014707,2014-03-12-054707,2014-03-12-094706,2014-03-12-134706,2014-03-12-174706,2014-03-12-214705,2014-03-13-065510,2014-03-13-105509,2014-03-13-145509,2014-03-13-185508,2014-03-13-225508,2014-03-14-025508,2014-03-14-065507,2014-03-14-105507,2014-03-14-145507,2014-03-14-185506,2014-03-14-225506,2014-03-15-025506,2014-03-15-065505,2014-03-15-105505,2014-03-15-145504,2014-03-15-185504,2014-03-15-225504,2014-03-16-025503,2014-03-16-065503,2014-03-16-105503,2014-03-16-145502,2014-03-16-185502,2014-03-16-225502,2014-03-17-025501,2014-03-17-065501,2014-03-17-105501,2014-03-17-145500,2014-03-17-185500,2014-03-17-225459,2014-03-18-025459,2014-03-18-065459,2014-03-18-105458,2014-03-18-134501,2014-03-18-174501,2014-03-18-214500,2014-03-18-225010,2014-03-19-025009,2014-03-19-065009,2014-03-19-105008,2014-03-19-145008,2014-03-19-185007,2014-03-19-225007,2014-03-20-065006,2014-03-20-105006,2014-03-20-145006,2014-03-20-185005,2014-03-20-225005,2014-03-21-025004,2014-03-21-065004,2014-03-21-105004,2014-03-21-145003,2014-03-21-185003,2014-03-21-225002,2014-03-22-025002,2014-03-22-065002,2014-03-22-105001,2014-03-22-145001,2014-03-22-185001,2014-03-22-225000,2014-03-23-025000,2014-03-23-065000,2014-03-23-104959,2014-03-23-144959,2014-03-23-184958,2014-03-23-224958,2014-03-24-024958,2014-03-24-070009,2014-03-24-110008,2014-03-24-150008,2014-03-24-190007,2014-03-24-230007,2014-03-25-030007,2014-03-25-070006,2014-03-25-110006,2014-03-25-150006,2014-03-25-190005,2014-03-25-230005,2014-03-26-030005,2014-03-26-070004,2014-03-26-110004,2014-03-26-150003,2014-03-26-190003,2014-03-26-230003,2014-03-27-070002,2014-03-27-110002,2014-03-27-150001,2014-03-27-190001,2014-03-27-230000,2014-03-28-030000,2014-03-28-070000,2014-03-28-105959,2014-03-28-145959,2014-03-28-185959,2014-03-28-225958,2014-03-29-025958,2014-03-29-065957,2014-03-29-105957,2014-03-29-145957,2014-03-29-185956,2014-03-29-195607,2014-03-29-235607,2014-03-30-045607,2014-03-30-085606,2014-03-30-125606,2014-03-30-165606,2014-03-30-205605,2014-03-31-005607,2014-03-31-045605,2014-03-31-085604,2014-03-31-125604,2014-03-31-165603,2014-03-31-205604,2014-04-01-075034,2014-04-01-115002,2014-04-01-155002,2014-04-01-201211,2014-04-02-001154,2014-04-02-011006,2014-04-02-051006,2014-04-02-091008,2014-04-02-113010,2014-04-02-153009,2014-04-02-193009,2014-04-02-233009,2014-04-03-073008,2014-04-03-113008,2014-04-03-153007,2014-04-03-193007,2014-04-03-233006,2014-04-04-033006,2014-04-04-073005,2014-04-04-113005,2014-04-04-153005,2014-04-04-193004,2014-04-04-233004,2014-04-05-033008,2014-04-05-073003,2014-04-05-122322,2014-04-05-142944,2014-04-05-144458,2014-04-05-193628,2014-04-05-224457,2014-04-06-024456,2014-04-06-064456,2014-04-06-104456,2014-04-06-144455,2014-04-06-184455,2014-04-06-224455,2014-04-07-024454,2014-04-07-064454,2014-04-07-104453,2014-04-07-144453,2014-04-07-184453,2014-04-07-224452,2014-04-08-024452,2014-04-08-064451,2014-04-08-104451,2014-04-08-144451,2014-04-08-184450,2014-04-08-224450,2014-04-09-071355,2014-04-09-104449,2014-04-09-144449,2014-04-10-082943,2014-04-10-104446,2014-04-10-144446,2014-04-10-184446,2014-04-11-023220,2014-04-11-063220,2014-04-11-103220,2014-04-11-143219,2014-04-11-183218,2014-04-11-223218,2014-04-12-023218,2014-04-12-063217,2014-04-12-103217,2014-04-12-143217,2014-04-12-183216,2014-04-12-223216,2014-04-13-023216,2014-04-13-063215,2014-04-13-103215,2014-04-13-143215,2014-04-13-183214,2014-04-13-223214,2014-04-14-023213,2014-04-14-063213,2014-04-14-103213,2014-04-14-143212,2014-04-14-183212,2014-04-14-223212,2014-04-15-023211,2014-04-15-063211,2014-04-15-103211,2014-04-15-143210,2014-04-15-183210,2014-04-15-223210,2014-04-16-023209,2014-04-16-063209,2014-04-16-103208,2014-04-16-143208,2014-04-16-183208,2014-04-16-223207,2014-04-17-063207,2014-04-17-103206,2014-04-17-143206,2014-04-17-183206,2014-04-17-223205,2014-04-18-023205,2014-04-18-063204,2014-04-18-103204,2014-04-18-143204,2014-04-18-183203,2014-04-18-223203,2014-04-19-023203,2014-04-19-063202,2014-04-19-103202,2014-04-19-143202,2014-04-19-183201,2014-04-19-223201,2014-04-20-023200,2014-04-20-063201,2014-04-20-103200,2014-04-20-153916,2014-04-20-193916,2014-04-20-233915,2014-04-21-033915,2014-04-21-073914,2014-04-21-113914,2014-04-21-153914,2014-04-21-193913,2014-04-21-233913,2014-04-22-033913,2014-04-22-073912,2014-04-22-113912,2014-04-22-153912,2014-04-22-193911,2014-04-22-233911,2014-04-23-033910,2014-04-23-073910,2014-04-23-113910,2014-04-23-153911,2014-04-23-193909,2014-04-23-233909,2014-04-24-073908,2014-04-24-113908,2014-04-24-153907,2014-04-24-193907,2014-04-24-233906,2014-04-25-033906,2014-04-25-073906,2014-04-25-113905,2014-04-25-153905,2014-04-25-193905,2014-04-25-233904,2014-04-26-033904,2014-04-26-073904,2014-04-26-113903,2014-04-26-153903,2014-04-26-193903,2014-04-26-233902,2014-04-27-033902,2014-04-27-073901,2014-04-27-113901,2014-04-27-153901,2014-04-27-193900,2014-04-27-233900,2014-04-28-033900,2014-04-28-073859,2014-04-28-113859,2014-04-28-153859,2014-04-28-193858,2014-04-28-233858,2014-04-29-033857,2014-04-29-073857,2014-04-29-113857,2014-04-29-153856,2014-04-29-193856,2014-04-29-233856,2014-04-30-033855,2014-04-30-073855,2014-04-30-113854,2014-04-30-153854,2014-04-30-193854,2014-04-30-211427,2014-05-01-044205,2014-05-01-055041,2014-05-01-095041,2014-05-01-135040,2014-05-01-175040,2014-05-01-215040,2014-05-02-015039,2014-05-02-055039,2014-05-02-095039,2014-05-02-135038,2014-05-02-175038,2014-05-02-215038,2014-05-03-015037,2014-05-03-055037,2014-05-03-095036,2014-05-03-135036,2014-05-03-175036,2014-05-03-215035,2014-05-04-015035,2014-05-04-055035,2014-05-04-095034,2014-05-04-135034,2014-05-04-175034,2014-05-04-215033,2014-05-05-015033,2014-05-05-115640,2014-05-05-155640,2014-05-05-195639,2014-05-05-235639,2014-05-06-035639,2014-05-06-075638,2014-05-06-115638,2014-05-06-155637,2014-05-06-195637,2014-05-06-235637,2014-05-07-035636,2014-05-07-075636,2014-05-07-115635,2014-05-07-155635,2014-05-07-195635,2014-05-07-235634,2014-05-08-075634,2014-05-08-115633,2014-05-08-150504,2014-05-08-190504,2014-05-08-230503,2014-05-09-030503,2014-05-09-070503,2014-05-09-110502,2014-05-09-150502,2014-05-09-190501,2014-05-09-230501,2014-05-10-030501,2014-05-10-070500,2014-05-10-110500,2014-05-10-150550,2014-05-15-203842,2014-05-16-003842,2014-05-16-043841,2014-05-16-083841,2014-05-16-123840,2014-05-17-020702,2014-05-17-134509,2014-05-17-163838,2014-05-17-220548,2014-05-18-003837,2014-05-18-043836,2014-05-18-083836,2014-05-18-123836,2014-05-18-163835,2014-05-18-203835,2014-05-19-003834,2014-05-19-043834,2014-05-19-083834,2014-05-19-123833,2014-05-19-163833,2014-05-19-203833,2014-05-20-003832,2014-05-20-022227,2014-05-20-025606,2014-05-20-033453,2014-05-20-044452,2014-05-20-084407,2014-05-20-124421,2014-05-20-164359,2014-05-20-204421,2014-05-21-004458,2014-05-21-044602,2014-05-21-084435,2014-05-21-124403,2014-05-21-164444,2014-05-21-204701,2014-05-22-232144,2014-05-23-025041,2014-05-23-070746,2014-05-23-110745,2014-05-23-150745,2014-05-24-131451,2014-05-24-134344,2014-05-24-154907,2014-05-24-173608,2014-05-24-220807,2014-05-24-234906,2014-05-25-034906,2014-05-25-074905,2014-05-25-114905,2014-05-25-154905,2014-05-25-194904,2014-05-25-234904,2014-05-26-034904,2014-05-26-074903,2014-05-26-114903,2014-05-26-154902,2014-05-26-194902,2014-05-26-234902,2014-05-27-013957,2014-05-27-053956,2014-05-27-093956,2014-05-27-133956,2014-05-27-173955,2014-05-27-213955,2014-05-28-013954,2014-05-28-053954,2014-05-28-055941,2014-05-28-084226,2014-05-28-171453,2014-05-28-173953,2014-05-28-213953,2014-05-28-221348,2014-05-29-061347,2014-05-29-101347,2014-05-29-141346,2014-05-29-181346,2014-05-29-221345,2014-05-30-021345,2014-05-30-061345,2014-05-30-101344,2014-05-30-141344,2014-05-30-221343,2014-05-31-030704,2014-05-31-070703,2014-05-31-112804,2014-05-31-150703,2014-05-31-190702,2014-05-31-230702,2014-06-01-070701,2014-06-01-110701,2014-06-01-150700,2014-06-01-190700,2014-06-01-230700,2014-06-02-053033,2014-06-02-110913,2014-06-02-184417,2014-06-03-030657,2014-06-03-070657,2014-06-03-110656,2014-06-03-150656,2014-06-03-190656,2014-06-03-230655,2014-06-04-054143,2014-06-04-074949,2014-06-04-114949,2014-06-04-154949,2014-06-04-194948,2014-06-04-234948,2014-06-05-052448,2014-06-05-092447,2014-06-05-132447,2014-06-05-172446,2014-06-05-234848,2014-06-06-001545,2014-06-06-010227,2014-06-06-014618,2014-06-06-045245,2014-06-06-063146,2014-06-06-120140,2014-06-06-122759,2014-06-06-162759,2014-06-06-202758,2014-06-07-042757,2014-06-07-064657,2014-06-07-122257,2014-06-07-162257,2014-06-07-172559,2014-06-07-212558,2014-06-08-052558,2014-06-08-092557,2014-06-08-132557,2014-06-08-172556,2014-06-08-212556,2014-06-09-052555,2014-06-09-092555,2014-06-09-132554,2014-06-09-172554,2014-06-09-212554,2014-06-10-052553,2014-06-10-092552,2014-06-10-132552,2014-06-10-181414,2014-06-11-024741,2014-06-11-052551,2014-06-11-092550,2014-06-11-163212,2014-06-11-201225,2014-06-12-045224,2014-06-12-083948,2014-06-12-092732,2014-06-12-100301,2014-06-12-121224,2014-06-12-161223,2014-06-12-201223,2014-06-13-041222,2014-06-13-081222,2014-06-13-121221,2014-06-13-161221,2014-06-13-201220,2014-06-14-041220,2014-06-14-081219,2014-06-14-121219,2014-06-14-161218,2014-06-14-201218,2014-06-15-041217,2014-06-15-081217,2014-06-15-121216,2014-06-15-161216,2014-06-15-201216,2014-06-16-041215,2014-06-16-081215,2014-06-16-121215,2014-06-16-133531,2014-06-16-175358,2014-06-16-215357,2014-06-17-055356,2014-06-17-064555,2014-06-17-104555,2014-06-17-144555,2014-06-17-162559,2014-06-17-202559,2014-06-18-042558,2014-06-18-082558,2014-06-18-122557,2014-06-18-162557,2014-06-18-202557,2014-06-19-042556,2014-06-19-082555,2014-06-19-122555,2014-06-19-162555,2014-06-19-202554,2014-06-20-042553,2014-06-20-082553,2014-06-20-122553,2014-06-20-162600,2014-06-20-181821,2014-06-20-221821,2014-06-21-061819,2014-06-21-101819,2014-06-21-141819,2014-06-21-181818,2014-06-21-221818,2014-06-22-061817,2014-06-22-101817,2014-06-22-141816,2014-06-22-181816,2014-06-22-221815,2014-06-23-052156,2014-06-23-092156,2014-06-23-132155,2014-06-23-172155,2014-06-23-212155,2014-06-24-052154,2014-06-24-105406,2014-06-24-145406,2014-06-24-185405,2014-06-24-225405,2014-06-25-065404,2014-06-25-105404,2014-06-25-145403,2014-06-25-190657,2014-06-25-195956,2014-06-25-235955,2014-06-26-075955,2014-06-26-115954,2014-06-26-155954,2014-06-26-195953,2014-06-26-235953,2014-06-27-075952,2014-06-27-115952,2014-06-27-135212,2014-06-27-175211,2014-06-27-223708,2014-06-28-055210,2014-06-28-095210,2014-06-28-135209,2014-06-28-175209,2014-06-28-215209,2014-06-29-055208,2014-06-29-095207,2014-06-29-135207,2014-06-29-175207,2014-06-29-215206,2014-06-30-064432,2014-06-30-104431,2014-06-30-144431,2014-06-30-184430,2014-06-30-224430,2014-07-01-124957,2014-07-01-150113,2014-07-01-184428,2014-07-01-205829,2014-07-02-045829,2014-07-02-085828,2014-07-02-125828,2014-07-02-165828,2014-07-02-173504,2014-07-02-213504,2014-07-03-050659,2014-07-03-090659,2014-07-03-130658,2014-07-03-170658,2014-07-03-183117,2014-07-03-223117,2014-07-04-063116,2014-07-04-103115,2014-07-04-143115,2014-07-04-183115,2014-07-05-183112,2014-07-05-223112,2014-07-06-063111,2014-07-06-103111,2014-07-06-143110,2014-07-06-183110,2014-07-06-223110,2014-07-07-042416,2014-07-07-082415,2014-07-07-122415,2014-07-07-162415,2014-07-07-202414,2014-07-08-042414,2014-07-08-182842,2014-07-08-202412,2014-07-09-042411,2014-07-09-082411,2014-07-09-120830,2014-07-09-160829,2014-07-09-200829,2014-07-10-040828,2014-07-10-080828,2014-07-10-120827,2014-07-10-160827,2014-07-10-200826,2014-07-11-040826,2014-07-11-080825,2014-07-11-120825,2014-07-11-160824,2014-07-11-200824,2014-07-12-152311,2014-07-12-192310,2014-07-12-232310,2014-07-13-072309,2014-07-13-112309,2014-07-13-152321,2014-07-13-194121,2014-07-13-232308,2014-07-14-072307,2014-07-14-112306,2014-07-14-140720,2014-07-14-211859,2014-07-15-083158,2014-07-15-123158,2014-07-15-163157,2014-07-15-203157,2014-07-16-043156,2014-07-16-083156,2014-07-16-174917,2014-07-16-203155,2014-07-17-043154,2014-07-17-083153,2014-07-17-123153,2014-07-17-163153,2014-07-17-203152,2014-07-18-013602,2014-07-18-053602,2014-07-18-093601,2014-07-18-133606,2014-07-21-053417,2014-07-21-093417,2014-07-21-133416,2014-07-21-173416,2014-07-21-213415,2014-07-22-070019,2014-07-22-093414,2014-07-22-133414,2014-07-22-173413,2014-07-22-192208,2014-07-22-232208,2014-07-23-073958,2014-07-23-112207,2014-07-23-152207,2014-07-23-210011,2014-07-24-063029,2014-07-24-090010,2014-07-24-130010,2014-07-24-162301,2014-07-24-202301,2014-07-25-042300,2014-07-25-082259,2014-07-25-122259,2014-07-25-162259,2014-07-25-202258,2014-07-26-042257,2014-07-26-082257,2014-07-26-122257,2014-07-26-162256,2014-07-26-202256,2014-07-27-042255,2014-07-27-082255,2014-07-27-122254,2014-07-27-162254,2014-07-27-202253,2014-07-28-042253,2014-07-28-082252,2014-07-28-122252,2014-07-28-173027,2014-07-28-213026,2014-07-29-053025,2014-07-29-093025,2014-07-29-133025,2014-07-29-213024,2014-07-30-053023,2014-07-30-093023,2014-07-30-173022,2014-07-30-213021,2014-07-31-053021,2014-07-31-093022,2014-07-31-165144,2014-07-31-205144,2014-08-01-045144,2014-08-01-085143,2014-08-01-165142,2014-08-01-205142,2014-08-02-045142,2014-08-02-085142,2014-08-02-165141,2014-08-02-205141,2014-08-03-045139,2014-08-03-085138,2014-08-03-165137,2014-08-03-205137,2014-08-03-235540,2014-08-04-075540,2014-08-04-115539,2014-08-04-195538,2014-08-04-235538,2014-08-05-075537,2014-08-05-115537,2014-08-05-195536,2014-08-05-235536,2014-08-06-075535,2014-08-06-115535,2014-08-06-195534,2014-08-06-235533,2014-08-07-063523,2014-08-07-103522,2014-08-07-183522,2014-08-07-223521,2014-08-08-063521,2014-08-08-103520,2014-08-08-183519,2014-08-08-223519,2014-08-09-063518,2014-08-09-103517,2014-08-09-183517,2014-08-09-223516,2014-08-10-063516,2014-08-10-103515,2014-08-10-183514,2014-08-10-223514,2014-08-11-063513,2014-08-11-103513,2014-08-11-201404,2014-08-12-041404,2014-08-12-081403,2014-08-12-180000,2014-08-12-190000,2014-08-12-200000,2014-08-12-210000,2014-08-12-220000,2014-08-12-230000,2014-08-13-010000,2014-08-13-020000,2014-08-13-030000,2014-08-13-040000,2014-08-13-050000,2014-08-13-060000,2014-08-13-070000,2014-08-13-080000,2014-08-13-090000,2014-08-13-100000,2014-08-13-110000,2014-08-13-130000,2014-08-13-140000,2014-08-13-150000,2014-08-13-160000,2014-08-13-170000,2014-08-13-180000,2014-08-13-190000,2014-08-13-200000,2014-08-13-210000,2014-08-13-220000,2014-08-13-230000,2014-08-14-010000,2014-08-14-020000,2014-08-14-030000,2014-08-14-040000,2014-08-14-050000,2014-08-14-060000,2014-08-14-070000,2014-08-14-080000,2014-08-14-090000,2014-08-14-100000,2014-08-14-110000,2014-08-14-130000,2014-08-14-140000,2014-08-14-150000,2014-08-14-160000,2014-08-14-170000,2014-08-14-180000,2014-08-14-190000,2014-08-14-200000,2014-08-14-210000,2014-08-14-220000,2014-08-14-230000,2014-08-15-010000,2014-08-15-020000,2014-08-15-030000,2014-08-15-040000,2014-08-15-050000,2014-08-15-060000,2014-08-15-070000,2014-08-15-080000,2014-08-15-090000,2014-08-15-100000,2014-08-15-110000,2014-08-15-130000,2014-08-15-140000,2014-08-15-150000,2014-08-15-160000,2014-08-15-170000,2014-08-15-180000,2014-08-15-190000,2014-08-15-200000,2014-08-15-210000,2014-08-15-220000,2014-08-15-230000,2014-08-16-010000,2014-08-16-020000,2014-08-16-030000,2014-08-16-040000,2014-08-16-050000,2014-08-16-060000,2014-08-16-070000,2014-08-16-080000,2014-08-16-090000,2014-08-16-100000,2014-08-16-110000,2014-08-16-130000,2014-08-16-150000,2014-08-16-160000,2014-08-16-170000,2014-08-16-180000,2014-08-16-190000,2014-08-16-200000,2014-08-16-210000,2014-08-16-220000,2014-08-16-230000,2014-08-17-010000,2014-08-17-020000,2014-08-17-030000,2014-08-17-150000,2014-08-17-160000,2014-08-17-170000,2014-08-17-180000,2014-08-17-190000,2014-08-17-200000,2014-08-17-210000,2014-08-17-220000,2014-08-17-230000,2014-08-18-010000,2014-08-18-020000,2014-08-18-030000,2014-08-18-040000,2014-08-18-050000,2014-08-18-060000,2014-08-18-070000,2014-08-18-080000,2014-08-18-090000,2014-08-18-100000,2014-08-18-110000,2014-08-18-130000,2014-08-18-140000,2014-08-18-150000,2014-08-18-160000,2014-08-18-170000,2014-08-18-180000,2014-08-18-190000,2014-08-18-200000,2014-08-18-210000,2014-08-18-220000,2014-08-18-230000,2014-08-19-010000,2014-08-19-020000,2014-08-19-030000,2014-08-19-040000,2014-08-19-050000,2014-08-19-060000,2014-08-19-070000,2014-08-19-080000,2014-08-19-090000,2014-08-19-100000,2014-08-19-110000,2014-08-19-130000,2014-08-19-140000,2014-08-19-150000,2014-08-19-160000,2014-08-19-170000,2014-08-19-180000,2014-08-19-190000,2014-08-19-200000,2014-08-19-210000,2014-08-19-220000,2014-08-19-230000,2014-08-20-010000,2014-08-20-020000,2014-08-20-030000,2014-08-20-040000,2014-08-20-050000,2014-08-20-060000,2014-08-20-070000,2014-08-20-080000,2014-08-20-090000,2014-08-20-100000,2014-08-20-110000,2014-08-20-130000,2014-08-20-140000,2014-08-20-150000,2014-08-20-160000,2014-08-20-170000,2014-08-20-180000,2014-08-20-190000,2014-08-20-200000,2014-08-20-210000,2014-08-20-220000,2014-08-20-230000,2014-08-21-010000,2014-08-21-030000,2014-08-21-040000,2014-08-21-050000,2014-08-21-060000,2014-08-21-070000,2014-08-21-080000,2014-08-21-090000,2014-08-21-100000,2014-08-21-110000,2014-08-21-130000,2014-08-21-140000,2014-08-21-150000,2014-08-21-170000,2014-08-21-180000,2014-08-21-190000,2014-08-21-210000,2014-08-21-220000,2014-08-21-230000,2014-08-22-010000,2014-08-22-020000,2014-08-22-030000,2014-08-22-050000,2014-08-22-060000,2014-08-22-070000,2014-08-22-090000,2014-08-22-100000,2014-08-22-190000,2014-08-22-210000,2014-08-22-220000,2014-08-22-230000,2014-08-23-010000,2014-08-23-020000,2014-08-23-030000,2014-08-23-050000,2014-08-23-060000,2014-08-23-070000,2014-08-23-090000,2014-08-23-100000,2014-08-23-110000,2014-08-23-130000,2014-08-23-140000,2014-08-23-150000,2014-08-23-170000,2014-08-23-180000,2014-08-23-190000,2014-08-23-210000,2014-08-23-220000,2014-08-23-230000,2014-08-24-010000,2014-08-24-020000,2014-08-24-030000,2014-08-24-050000,2014-08-24-060000,2014-08-24-070000,2014-08-24-090000,2014-08-24-100000,2014-08-24-110000,2014-08-24-130000,2014-08-24-140000,2014-08-24-150000,2014-08-24-170000,2014-08-24-180000,2014-08-24-190000,2014-08-24-210000,2014-08-24-220000,2014-08-24-230000,2014-08-25-010000,2014-08-25-020000,2014-08-25-030000,2014-08-25-050000,2014-08-25-060000,2014-08-25-070000,2014-08-25-090000,2014-08-25-100000,2014-08-25-110000,2014-08-25-130000,2014-08-25-140000,2014-08-25-150000,2014-08-25-170000,2014-08-25-180000,2014-08-25-190000,2014-08-25-210000,2014-08-25-220000,2014-08-25-230000,2014-08-26-010000,2014-08-26-020000,2014-08-26-030000,2014-08-26-050000,2014-08-26-060000,2014-08-26-070000,2014-08-26-090000,2014-08-26-100000,2014-08-26-110000,2014-08-26-130000,2014-08-26-140000,2014-08-26-150000,2014-08-26-170000,2014-08-26-180000,2014-08-26-190000,2014-08-26-210000,2014-08-26-220000,2014-08-26-230000,2014-08-27-010000,2014-08-27-020000,2014-08-27-030000,2014-08-27-050000,2014-08-27-060000,2014-08-27-070000,2014-08-27-090000,2014-08-27-100000,2014-08-27-110000,2014-08-27-130000,2014-08-27-140000,2014-08-27-150000,2014-08-27-170000,2014-08-27-180000,2014-08-27-190000,2014-08-27-210000,2014-08-27-220000,2014-08-27-230000,2014-08-28-010000,2014-08-28-020000,2014-08-28-030000,2014-08-28-050000,2014-08-28-060000,2014-08-28-070000,2014-08-28-090000,2014-08-28-100000,2014-08-28-110000,2014-08-28-140000,2014-08-28-150000'
cannot destroy snapshot pool/from_src/user@2013-04-03-072351: dataset is busy
cannot destroy snapshot pool/from_src/user@2013-11-15-145353: dataset is busy
cannot destroy snapshot pool/from_src/user@2013-11-16-145351: dataset is busy
cannot destroy snapshot pool/from_src/user@2013-11-17-145349: dataset is busy
cannot destroy snapshot pool/from_src/user@2013-11-18-145347: dataset is busy
cannot destroy snapshot pool/from_src/user@2013-11-19-145345: dataset is busy
cannot destroy snapshot pool/from_src/user@2013-11-20-145342: dataset is busy
cannot destroy snapshot pool/from_src/user@2013-11-26-152014: dataset is busy
cannot destroy snapshot pool/from_src/user@2013-12-07-013608: dataset is busy
cannot destroy snapshot pool/from_src/user@2013-12-08-013606: dataset is busy
cannot destroy snapshot pool/from_src/user@2013-12-11-133558: dataset is busy
cannot destroy snapshot pool/from_src/user@2013-12-16-175846: dataset is busy
cannot destroy snapshot pool/from_src/user@2013-12-17-175844: dataset is busy
cannot destroy snapshot pool/from_src/user@2013-12-18-175842: dataset is busy

[hadfl]

well, if snapshots are created by znapzend they should not be 'hold'.

in your specific setup where snaphots not created by znapzend exist, you might want to have a look at the so called 'oracleMode' feature which will exactly do what you are asking for: https://github.com/oetiker/znapzend/blob/master/doc/znapzend.pod

[rottegift]

What if one wants to temporarily avoid destruction of a particular snapshot ?

(And what if one wants to temporarily mount or clone a particular snapshot ?)

[oetiker]

@rottegift how about determining holds while scanning the snapshots and then excluding them from destruction ? would this be a worthy task for your first contribution ?

[odoucet]

Hello, I have the same issue with a zfs clone/promote on a volume : snapshot used is locked on purpose, and znapzend cannot delete it (happily !), but then snaps are accumulating on it.

For this exact matter, we can find locked snapshot by using "zfs get origin -r $zpoolname", or snaps with "zfs get clones" != ''

For snaps locked by "zfs hold", property 'userrefs' is incremented, so we need to check all snaps where property userrefs > 0.

I checked the value for a snapshot that is the origin of a clone, and userrefs = 0.
So we need to exclude snaps based on both properties : "zfs get clones,userrefs -r $zpoolName" to grab everything we need.

I will be happy to contribute on this, even if I'm not particularly fluent in Perl. Can you help me a bit and tell me where would it be nicer to add this check ?

[oetiker]

I would assume that the place where we get the list of existing snapshots would be the right place to get these attributes as well so that we are able to skip the 'special' snapshots ... lib/ZnapZend/ZFS.pm#L142