New (squashed) image not saved

[JavaChr1s]

I already used docker-squash a couple of times without any problem, but now the new images wasn't saved.

The image is used to be a oracle database. We do the following:

1. created the image
2. added some data to the database
3. docker squash
4. used the image => container
5. for each new version we commit the container
6. docker squash
7. used the image => container
8. for each new version we commit the container
9. docker squash
10. and so on

That worked for some versions, but now it stopped working. The squashed image is just not saved, but I can't see any error in the log.

osp@host01:~$ docker-squash -t osp-common-docker-local.artifacts.host.de/database:1.24.0 osp-common-docker-local.artifacts.host.de/database:1.24.0raw -v
(see the attached file for output)
squash.log

osp@host01:~$ docker images
REPOSITORY                                            TAG                 IMAGE ID            CREATED             SIZE
osp-common-docker-local.artifacts.host.de/database   1.24.0raw           35df6648fa3c        5 days ago          13.3 GB
frolvlad/alpine-oraclejdk8                            slim                7d711dabe19e        4 months ago        167 MB
sath89/oracle-12c                                     latest              17cd1ab9d9a7        5 months ago        5.7 GB
anapsix/alpine-java                                   8u144b01_jdk        61244877f85e        9 months ago        173 MB

[ZmingZinnia]

me too!! no new image generate

[goldmann]

Is there any chance for a reproducer? I don't see any errors in the log and Docker daemon even confirmed with status 200 that the image was uploaded, so I'm not sure what could be wrong here really.

[ZmingZinnia]

packpage info:

[root@ssdnodes-56871 tmp]# pip install docker-squash
Collecting docker-squash
  Downloading https://files.pythonhosted.org/packages/f4/df/5fec1436327ee8638754fad2eb60778d330fbb0a927856a894fa8916f754/docker-squash-1.0.7.tar.gz
Collecting docker (from docker-squash)
  Using cached https://files.pythonhosted.org/packages/31/01/41f727a549abd788eb91d0df4c801cb4c1f5227eee04a2621e13d7ed3e04/docker-3.3.0-py2.py3-none-any.whl
Requirement already satisfied: six in /usr/lib/python2.7/site-packages (from docker-squash) (1.11.0)
Requirement already satisfied: backports.ssl-match-hostname>=3.5; python_version < "3.5" in /usr/lib/python2.7/site-packages (from docker->docker-squash) (3.5.0.1)
Requirement already satisfied: ipaddress>=1.0.16; python_version < "3.3" in /usr/lib/python2.7/site-packages (from docker->docker-squash) (1.0.16)
Requirement already satisfied: requests!=2.18.0,>=2.14.2 in /usr/lib/python2.7/site-packages (from docker->docker-squash) (2.18.4)
Collecting docker-pycreds>=0.2.3 (from docker->docker-squash)
  Using cached https://files.pythonhosted.org/packages/ea/bf/7e70aeebc40407fbdb96fa9f79fc8e4722ea889a99378303e3bcc73f4ab5/docker_pycreds-0.3.0-py2.py3-none-any.whl
Requirement already satisfied: websocket-client>=0.32.0 in /usr/lib/python2.7/site-packages (from docker->docker-squash) (0.48.0)
Requirement already satisfied: certifi>=2017.4.17 in /usr/lib/python2.7/site-packages (from requests!=2.18.0,>=2.14.2->docker->docker-squash) (2018.4.16)
Requirement already satisfied: chardet<3.1.0,>=3.0.2 in /usr/lib/python2.7/site-packages (from requests!=2.18.0,>=2.14.2->docker->docker-squash) (3.0.4)
Requirement already satisfied: idna<2.7,>=2.5 in /usr/lib/python2.7/site-packages (from requests!=2.18.0,>=2.14.2->docker->docker-squash) (2.6)
Requirement already satisfied: urllib3<1.23,>=1.21.1 in /usr/lib/python2.7/site-packages (from requests!=2.18.0,>=2.14.2->docker->docker-squash) (1.22)
Installing collected packages: docker-pycreds, docker, docker-squash
  Running setup.py install for docker-squash ... done
Successfully installed docker-3.3.0 docker-pycreds-0.3.0 docker-squash-1.0.7

docker images:

[root@ssdnodes-56871 tmp]# docker images
REPOSITORY                               TAG                 IMAGE ID            CREATED             SIZE
test.register.top/pro-dev                6.3                 6ca18b5aaad3        4 hours ago         1.94GB
mysql                                    5.7                 0d16d0a97dd1        5 weeks ago         372MB
phusion/baseimage                        0.10.1              2391dfad8777        2 months ago        241MB
memcached                                1.4-alpine          273374b463b8        10 months ago       7.68MB

squash image: docker-squash -t test.register.top/pro-dev:latest test.register.top/pro-dev:6.3

result:

2018-06-12 02:09:24,169 root         INFO     docker-squash version 1.0.7, Docker 9ee9f40, API 1.37...
2018-06-12 02:09:24,169 root         INFO     Using v2 image format
2018-06-12 02:09:24,215 root         INFO     Old image has 27 layers
2018-06-12 02:09:24,215 root         INFO     Checking if squashing is necessary...
2018-06-12 02:09:24,215 root         INFO     Attempting to squash last 27 layers...
2018-06-12 02:09:24,215 root         INFO     Saving image sha256:6ca18b5aaad34fee2e97b2ab72dff123970575ab16d5de983d1be0eefeec80e9 to /tmp/docker-squash-YPBkoH/old directory...


2018-06-12 02:10:25,636 root         INFO     Image saved!
2018-06-12 02:10:25,639 root         INFO     Squashing image 'test.register.top/pro-dev:6.3'...
2018-06-12 02:10:25,642 root         INFO     Starting squashing...
2018-06-12 02:10:25,642 root         INFO     Squashing file '/tmp/docker-squash-YPBkoH/old/c532de99585ec025147d6715c41dec12d0d480df504fc31acaed70650aece3ca/layer.tar'...
2018-06-12 02:10:30,113 root         INFO     Squashing file '/tmp/docker-squash-YPBkoH/old/4d221e303987e22fd35da5d5980f2ebf1583976848e7bc145c901ba32d564f6c/layer.tar'...
2018-06-12 02:10:30,130 root         INFO     Squashing file '/tmp/docker-squash-YPBkoH/old/25aa5b971f8d95ea3613ec3a2f2a55a893fb54cbb021997b9d7dad891a68ca0e/layer.tar'...
2018-06-12 02:10:30,394 root         INFO     Squashing file '/tmp/docker-squash-YPBkoH/old/3c39ff67cb659e23fea0cd90053e03c34cea9416a833df694bac574574152627/layer.tar'...
2018-06-12 02:11:29,456 root         INFO     Squashing file '/tmp/docker-squash-YPBkoH/old/e9c2c03ddda42b3b34fe58416abea26142febda578bc9764c52c9f137f17e599/layer.tar'...
2018-06-12 02:12:24,126 root         INFO     Squashing file '/tmp/docker-squash-YPBkoH/old/8b5c7b226fcb09e57e761f7ea80021544234a0e91876c6d70e43ced80bcf7331/layer.tar'...
2018-06-12 02:12:30,212 root         INFO     Squashing file '/tmp/docker-squash-YPBkoH/old/065b4d9a33275ee4dc616bb5b396b82adc4807f8f93b61a517b05c60c63afcca/layer.tar'...
2018-06-12 02:12:30,425 root         INFO     Squashing file '/tmp/docker-squash-YPBkoH/old/bdef22b03b8e619e92a6a7ed78264cc21f0963159a3c9a50019e49de40699a81/layer.tar'...
2018-06-12 02:13:31,397 root         INFO     Squashing file '/tmp/docker-squash-YPBkoH/old/31d86c0b9ae1bca9dd53c6103491f657180203caf853fd437c2862a10663193b/layer.tar'...
2018-06-12 02:14:47,893 root         INFO     Squashing file '/tmp/docker-squash-YPBkoH/old/8fb842e9f1d61838b31970046eea0a8adba3fba7fe04f52f3a99a2347e231ce9/layer.tar'...
2018-06-12 02:14:47,908 root         INFO     Squashing file '/tmp/docker-squash-YPBkoH/old/eab0e71fa467972811d5054979f46f1c2109dddd5b0c8554e9314e953c87a3d7/layer.tar'...
2018-06-12 02:15:52,991 root         INFO     Squashing file '/tmp/docker-squash-YPBkoH/old/1f41713a8b383ed2848a893acecfd33440fa5b008701a47bfc90d770c2023457/layer.tar'...
2018-06-12 02:15:53,067 root         INFO     Squashing file '/tmp/docker-squash-YPBkoH/old/7e33e15285359e7abbd82a4fa1a47af87724037ed3373a7397f6d4ff29336177/layer.tar'...
2018-06-12 02:15:53,103 root         INFO     Squashing file '/tmp/docker-squash-YPBkoH/old/661636a9e9728bd482df6b184b3774e8264243075ebbd119d3ac5ccfe82e9a9e/layer.tar'...
2018-06-12 02:15:53,118 root         INFO     Squashing file '/tmp/docker-squash-YPBkoH/old/fc1f0c6602b110214956d5f5b02770f5230dc7a8a7e5e89548b9383e26761c99/layer.tar'...
2018-06-12 02:16:53,014 root         INFO     Squashing file '/tmp/docker-squash-YPBkoH/old/ff8a6345243e8702d2271f71b5fc345bdf9975f8e87356e98c45a79faa1b495a/layer.tar'...
2018-06-12 02:16:53,214 root         INFO     Squashing file '/tmp/docker-squash-YPBkoH/old/abed66127cd074508a5d2981e10a06d7cea4a8ecd394a575f7a170eddaf94696/layer.tar'...
2018-06-12 02:16:53,241 root         INFO     Squashing file '/tmp/docker-squash-YPBkoH/old/c9ac454dff2322d83c59eb33b3d56bbff3379f87eca544816352e5681a72dcbe/layer.tar'...
2018-06-12 02:16:53,264 root         INFO     Squashing file '/tmp/docker-squash-YPBkoH/old/4b1d73d52cae299239865d18d63530ade00b6da5c946ed4ecd97e6517fcf9bbf/layer.tar'...
2018-06-12 02:16:53,293 root         INFO     Squashing file '/tmp/docker-squash-YPBkoH/old/51bdeed2159207efff16227bcc47397bd799b4d96bd9145939a02570a5afcddd/layer.tar'...
2018-06-12 02:16:53,440 root         INFO     Squashing file '/tmp/docker-squash-YPBkoH/old/071e7d15fb17624a7b3aa6464e3b33e8cc6a5ff94af93b7303e95f2c2db9e395/layer.tar'...
2018-06-12 02:19:17,079 root         INFO     Squashing finished!
2018-06-12 02:19:24,756 root         INFO     Original image size: 1917.86 MB
2018-06-12 02:19:24,756 root         INFO     Squashed image size: 1824.89 MB
2018-06-12 02:19:24,756 root         INFO     Image size decreased by 4.85 %
2018-06-12 02:19:24,756 root         INFO     New squashed image ID is 377897c518dfe33594beda4cad73cdee28b37b59190cd9d8db869d13836403df
2018-06-12 02:19:41,147 root         INFO     Image registered in Docker daemon as test.register.top/pro-dev:latest
2018-06-12 02:19:41,184 root         INFO     Done

docker images:

[root@ssdnodes-56871 tmp]# docker images
REPOSITORY                               TAG                 IMAGE ID            CREATED             SIZE
test.register.top/pro-dev                6.3                 6ca18b5aaad3        4 hours ago         1.94GB
mysql                                    5.7                 0d16d0a97dd1        5 weeks ago         372MB
phusion/baseimage                        0.10.1              2391dfad8777        2 months ago        241MB
memcached                                1.4-alpine          273374b463b8        10 months ago       7.68MB

[goldmann]

This could be potentially related to some changes in Docker itself. What versions you use exactly and from where you got them? I assume this is Docker CE, version 18+. If that's the case, can you try to squash it using older Docker?

[ZmingZinnia]

it's same for Docker version 17.12.1-ce

[ZmingZinnia]

info:

2018-06-12 04:49:23,520 root         INFO     docker-squash version 1.0.7, Docker 7390fc6, API 1.35...
2018-06-12 04:49:23,521 root         INFO     Using v2 image format
2018-06-12 04:49:23,549 root         INFO     Old image has 27 layers
2018-06-12 04:49:23,549 root         INFO     Checking if squashing is necessary...
2018-06-12 04:49:23,549 root         INFO     Attempting to squash last 27 layers...
2018-06-12 04:49:23,549 root         INFO     Saving image sha256:bd7881d9b92487cfcf132c7e87cf52176c1685356abb3158e6234efce6530f21 to /tmp/docker-squash-a6BqHx/old directory...
2018-06-12 04:50:16,715 root         INFO     Image saved!
2018-06-12 04:50:16,717 root         INFO     Squashing image 'test.register.top/pro-dev:6.3'...
2018-06-12 04:50:16,773 root         INFO     Starting squashing...
2018-06-12 04:50:16,774 root         INFO     Squashing file '/tmp/docker-squash-a6BqHx/old/8039ff6548659a0b3ddfe754e342928cb0001ada7d5028524953eceb9f6d646e/layer.tar'...
2018-06-12 04:50:22,203 root         INFO     Squashing file '/tmp/docker-squash-a6BqHx/old/c8fdc245f00131845b0fc035b26ac31674ffe8129548968fd8af9073ea8cff86/layer.tar'...
2018-06-12 04:50:22,224 root         INFO     Squashing file '/tmp/docker-squash-a6BqHx/old/c126cb8b9014f4693d370ffe03a129cd11afda2a9ada55cee7c29ba31b84a9ad/layer.tar'...
2018-06-12 04:50:22,514 root         INFO     Squashing file '/tmp/docker-squash-a6BqHx/old/cbb01ea5b3ddb12369f26463b654371f4c893706fafe085755c504dd6729213e/layer.tar'...
2018-06-12 04:51:21,278 root         INFO     Squashing file '/tmp/docker-squash-a6BqHx/old/6aef58e77eb8585822b23c59931bf0785ffcef7b503c8969b5b9ffbe84033122/layer.tar'...
2018-06-12 04:52:13,210 root         INFO     Squashing file '/tmp/docker-squash-a6BqHx/old/7ed98a765fb01135fdaba627953e365e0fb64a39c8e2d4aa56b0d7adcb3d70ff/layer.tar'...
2018-06-12 04:52:18,597 root         INFO     Squashing file '/tmp/docker-squash-a6BqHx/old/c284fe43eaaa053bc622efc8294a6596c306b104b21e09506a750dc2d2fad2c9/layer.tar'...
2018-06-12 04:52:18,824 root         INFO     Squashing file '/tmp/docker-squash-a6BqHx/old/dec6bfdd10c284a58c3962601ae6bc0a1da0543dcd97baf979128093e81e12cd/layer.tar'...
2018-06-12 04:53:15,379 root         INFO     Squashing file '/tmp/docker-squash-a6BqHx/old/0512794037997b63ebc623d3e56b3c9a58017b9060f34d85a4f479b48152b2f8/layer.tar'...
2018-06-12 04:54:30,327 root         INFO     Squashing file '/tmp/docker-squash-a6BqHx/old/fa855a00aa2fdc8f51e786431cabcec4c41d7c03b7ce821a57b3c204b238988d/layer.tar'...
2018-06-12 04:54:30,341 root         INFO     Squashing file '/tmp/docker-squash-a6BqHx/old/b03683bee26b09e79fd9a775596d1043ae33ab5674f3f2f3e2204417700ab104/layer.tar'...
2018-06-12 04:55:30,894 root         INFO     Squashing file '/tmp/docker-squash-a6BqHx/old/aa46de52c48ff7f6850558ffb83e216c583e61cced8e1c7c76ed66fe33c56269/layer.tar'...
2018-06-12 04:55:30,972 root         INFO     Squashing file '/tmp/docker-squash-a6BqHx/old/5f0fb08eaf486d05bd63c1375619bcb9b759c76c7fb67fa1eecd96cb2eb62e4a/layer.tar'...
2018-06-12 04:55:31,023 root         INFO     Squashing file '/tmp/docker-squash-a6BqHx/old/1f8472fbe172e755e0630bafb53b45d45ca4ddae1ddf462c814ad7d01132f323/layer.tar'...
2018-06-12 04:55:31,036 root         INFO     Squashing file '/tmp/docker-squash-a6BqHx/old/fc1f0c6602b110214956d5f5b02770f5230dc7a8a7e5e89548b9383e26761c99/layer.tar'...
2018-06-12 04:56:28,680 root         INFO     Squashing file '/tmp/docker-squash-a6BqHx/old/ff8a6345243e8702d2271f71b5fc345bdf9975f8e87356e98c45a79faa1b495a/layer.tar'...
2018-06-12 04:56:28,848 root         INFO     Squashing file '/tmp/docker-squash-a6BqHx/old/abed66127cd074508a5d2981e10a06d7cea4a8ecd394a575f7a170eddaf94696/layer.tar'...
2018-06-12 04:56:28,870 root         INFO     Squashing file '/tmp/docker-squash-a6BqHx/old/c9ac454dff2322d83c59eb33b3d56bbff3379f87eca544816352e5681a72dcbe/layer.tar'...
2018-06-12 04:56:28,889 root         INFO     Squashing file '/tmp/docker-squash-a6BqHx/old/4b1d73d52cae299239865d18d63530ade00b6da5c946ed4ecd97e6517fcf9bbf/layer.tar'...
2018-06-12 04:56:28,915 root         INFO     Squashing file '/tmp/docker-squash-a6BqHx/old/51bdeed2159207efff16227bcc47397bd799b4d96bd9145939a02570a5afcddd/layer.tar'...
2018-06-12 04:56:29,049 root         INFO     Squashing file '/tmp/docker-squash-a6BqHx/old/071e7d15fb17624a7b3aa6464e3b33e8cc6a5ff94af93b7303e95f2c2db9e395/layer.tar'...
2018-06-12 04:58:48,668 root         INFO     Squashing finished!
2018-06-12 04:58:56,402 root         INFO     Original image size: 1917.82 MB
2018-06-12 04:58:56,403 root         INFO     Squashed image size: 1824.87 MB
2018-06-12 04:58:56,403 root         INFO     Image size decreased by 4.85 %
2018-06-12 04:58:56,403 root         INFO     New squashed image ID is 92aa8891d86b2097019d7915703227aa674898904ca68d20fbe8211a7fdf8665
2018-06-12 04:59:14,359 root         INFO     Image registered in Docker daemon as test.register.top/pro-dev:6.3-squash
2018-06-12 04:59:14,394 root         INFO     Done

[root@ssdnodes-56871 image]# docker images
REPOSITORY                               TAG                 IMAGE ID            CREATED             SIZE
test.register.top/pro-dev                6.3                 bd7881d9b924        34 minutes ago      1.94GB
phusion/baseimage                        0.10.1              2391dfad8777        2 months ago        241MB

[root@ssdnodes-56871 image]# docker --version
Docker version 17.12.1-ce, build 7390fc6

[goldmann]

Have you tried specifying the -f flag? try to squash latest 3 or 5 layers. I wonder if it has anything to do with the fact that you squash all layers.

Generally speaking, squashing everything together can be viewed as a bad practice. Best practice is to squash everything that is part of the Dockerfile, leaving the image you base on, untouched.

[ZmingZinnia]

I'm sorry for not replying immediately

emmm.

info:

[root@ssdnodes-56871 share]# docker-squash -f phusion/baseimage:0.10.1 -t test.register.top/pro-dev:test test.register.top/pro-dev:6.3
2018-06-12 11:32:10,600 root         INFO     docker-squash version 1.0.7, Docker 7390fc6, API 1.35...
2018-06-12 11:32:10,601 root         INFO     Using v2 image format
2018-06-12 11:32:10,618 root         INFO     Old image has 27 layers
2018-06-12 11:32:10,622 root         INFO     Checking if squashing is necessary...
2018-06-12 11:32:10,622 root         INFO     Attempting to squash last 16 layers...
2018-06-12 11:32:10,622 root         INFO     Saving image sha256:bd7881d9b92487cfcf132c7e87cf52176c1685356abb3158e6234efce6530f21 to /tmp/docker-squash-isY99l/old directory...
2018-06-12 11:33:04,025 root         INFO     Image saved!
2018-06-12 11:33:04,028 root         INFO     Squashing image 'test.register.top/pro-dev:6.3'...
2018-06-12 11:33:04,033 root         INFO     Starting squashing...
2018-06-12 11:33:05,146 root         INFO     Squashing file '/tmp/docker-squash-isY99l/old/8039ff6548659a0b3ddfe754e342928cb0001ada7d5028524953eceb9f6d646e/layer.tar'...
2018-06-12 11:33:10,206 root         INFO     Squashing file '/tmp/docker-squash-isY99l/old/c8fdc245f00131845b0fc035b26ac31674ffe8129548968fd8af9073ea8cff86/layer.tar'...
2018-06-12 11:33:10,220 root         INFO     Squashing file '/tmp/docker-squash-isY99l/old/c126cb8b9014f4693d370ffe03a129cd11afda2a9ada55cee7c29ba31b84a9ad/layer.tar'...
2018-06-12 11:33:10,585 root         INFO     Squashing file '/tmp/docker-squash-isY99l/old/cbb01ea5b3ddb12369f26463b654371f4c893706fafe085755c504dd6729213e/layer.tar'...
2018-06-12 11:34:04,831 root         INFO     Squashing file '/tmp/docker-squash-isY99l/old/6aef58e77eb8585822b23c59931bf0785ffcef7b503c8969b5b9ffbe84033122/layer.tar'...
2018-06-12 11:34:54,152 root         INFO     Squashing file '/tmp/docker-squash-isY99l/old/7ed98a765fb01135fdaba627953e365e0fb64a39c8e2d4aa56b0d7adcb3d70ff/layer.tar'...
2018-06-12 11:35:00,764 root         INFO     Squashing file '/tmp/docker-squash-isY99l/old/c284fe43eaaa053bc622efc8294a6596c306b104b21e09506a750dc2d2fad2c9/layer.tar'...
2018-06-12 11:35:01,029 root         INFO     Squashing file '/tmp/docker-squash-isY99l/old/dec6bfdd10c284a58c3962601ae6bc0a1da0543dcd97baf979128093e81e12cd/layer.tar'...
2018-06-12 11:35:57,556 root         INFO     Squashing file '/tmp/docker-squash-isY99l/old/0512794037997b63ebc623d3e56b3c9a58017b9060f34d85a4f479b48152b2f8/layer.tar'...
2018-06-12 11:37:17,709 root         INFO     Squashing file '/tmp/docker-squash-isY99l/old/fa855a00aa2fdc8f51e786431cabcec4c41d7c03b7ce821a57b3c204b238988d/layer.tar'...
2018-06-12 11:37:17,723 root         INFO     Squashing file '/tmp/docker-squash-isY99l/old/b03683bee26b09e79fd9a775596d1043ae33ab5674f3f2f3e2204417700ab104/layer.tar'...
2018-06-12 11:38:17,482 root         INFO     Squashing file '/tmp/docker-squash-isY99l/old/aa46de52c48ff7f6850558ffb83e216c583e61cced8e1c7c76ed66fe33c56269/layer.tar'...
2018-06-12 11:38:17,562 root         INFO     Squashing file '/tmp/docker-squash-isY99l/old/5f0fb08eaf486d05bd63c1375619bcb9b759c76c7fb67fa1eecd96cb2eb62e4a/layer.tar'...
2018-06-12 11:38:17,592 root         INFO     Squashing file '/tmp/docker-squash-isY99l/old/1f8472fbe172e755e0630bafb53b45d45ca4ddae1ddf462c814ad7d01132f323/layer.tar'...
2018-06-12 11:39:30,197 root         INFO     Squashing finished!
2018-06-12 11:39:37,838 root         INFO     Original image size: 1917.82 MB
2018-06-12 11:39:37,838 root         INFO     Squashed image size: 1892.39 MB
2018-06-12 11:39:37,838 root         INFO     Image size decreased by 1.33 %
2018-06-12 11:39:37,838 root         INFO     New squashed image ID is 056a5b8abb2819248722108d6e5a4b627d827732b3675f38b28afcba97e52eeb
2018-06-12 11:39:54,304 root         INFO     Image registered in Docker daemon as test.register.top/pro-dev:test
2018-06-12 11:39:54,348 root         INFO     Done
[root@ssdnodes-56871 share]# docker images
REPOSITORY                               TAG                 IMAGE ID            CREATED             SIZE
test.register.top/pro-dev                6.3                 bd7881d9b924        7 hours ago         1.94GB
phusion/baseimage                        0.10.1              2391dfad8777        2 months ago        241MB

[goldmann]

OK, I must admit that this is more than weird. Can you give me the last lines of the log, building with -v after "New squashed image ID" line? I'm pretty sure the Docker API returns code 200, otherwise we should have an exception thrown. And if it return 200 then it ACKs the image...

[andreyto]

I was having this same issue until I have increased the sizes of the file systems that were holding both /tmp and /var/lib/docker. docker-squash uses both locations. They were getting nearly full in my case, and the output image would not show up in docker images, despite successful completion messages from docker-squash. After growing both file systems, the problem resolved itself.

[goldmann]

This is a very valuable finding worth investigation on my end. Thank you!

[ximencx]

@zMingGit i have some issue,,what is your docker version??

[fty1777]

I just met the same problem. I guess the root cause of the problem is that when docker-squash try to load the squashed image, the disk is full and the load silently (at least docker-squash is not aware of it) failed. I solved the problem by using the --output-path arg to save the squashed image into a file on another hard drive first, removing the original image, and then docker loading the squashed image back from the file.