unable to run with zfs storage driver

[gerhard6]

Hello

your image does not work based on docker with zfs storage driver
I think its a bug in docker/zfs (read on), but I want to keep you noticed, and perhaps you have some ideas for workarounds. I'll try to file an issue on docker...

ubuntu 16.04 with zfs
docker 1.11.2
https://docs.docker.com/engine/userguide/storagedriver/zfs-driver/
(setup of zfs fs is a bit simpler with new ubuntu now.)

both "make test" and "test3" (means with and without a volume) fails on both listener and on dbca execution. See the erros below.
I also tried to run the image with "-u root", and I noticed,that the error on the listener went away, however, dbca is not allowed to run as root user.
--privileged also did not help.

Also mind that when I try to create such files manually (as oracle user) things work fine, so I think oracle does some special things during opening the files.

regarding volumes:
(1) no -v : fails (implies zfs)
(2) -v /data: fails (implieds zfs)
(3) -v /some_non_zfs:/data: works
(4) -v /some_zfs:/data: fails

So, it seems that docker/zfs integration has a problem with access control setup (remember the -u root above, where the listener startup is successful)

Greetings, Gerhard.

listener: [AutoCreate Relation]: following error encountered and ignored:
listener: DIA-48316: relation [ADR_CONTROL] unavailable or cannot be created
listener: DIA-48210: Relation Not Found
listener: DIA-48166: error with opening ADR block file because file does not exist [/app/oracle/diag/tnslsnr/bc9000c85096/listener/metadata/ADR_CONTROL.ams] [0]
listener: DIA-48122: error with opening the ADR block file [/app/oracle/diag/tnslsnr/bc9000c85096/listener/metadata/ADR_CONTROL.ams] [0]
listener: DIA-27040: Message 27040 not found; product=RDBMS; facility=DIA
listener: Linux-x86_64 Error: 22: Invalid argument
listener: Additional information: 2
...

dbca_log: Creating and starting Oracle instance
dbca_log: DBCA_PROGRESS : 2%
dbca_log: DBCA_PROGRESS : 3%
dbca_log: DBCA_PROGRESS : 5%
dbca_log: ORA-01501: CREATE DATABASE failed
dbca_log: ORA-00200: control file could not be created
dbca_log: ORA-00202: control file: '/data/oracle/oradata/ORCL/control01.ctl'
dbca_log: ORA-27040: file create error, unable to create file

[bofm]

Is the filesystem inside the container writeable? You can check that this way:
docker run --rm -it bofm/oracle12c bash and play around interactively.

[gerhard6]

yes, it is. I logged into the container (as oracle user) and tried to create those files manually, it worked.

[gerhard6]

mind the progress/comments on moby/moby#23264, it seems that
oracle's usage of O_DIRECT is not yet supported on zfs - see openzfs/zfs#224

[thaJeztah]

ping @amitkris - you may be interested in this 👍

[gerhard6]

was finally able to apply the workaround described in comment "nigoroll commented on 27 Nov 2015" here: openzfs/zfs#224
which ensures that usage of O_DIRECT does not fail.

So In order to make things work on zfs, you need to add to the Dockerfile:
COPY files/libo_direct_interpose.so /tmp/
ENV LD_PRELOAD=/tmp/libo_direct_interpose.so

where libo_direct_interpose.so is one of the build results of this project/commit:
https://code.uplex.de/liblongpath/liblongpath/commit/2e46a921ce2b6b1caa56d39cbd58be85c5988bd0