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document dirperm1 fix for #783 in known issues
Since `dirperm1` requires a more recent aufs patch than many current OS release,
we cant remove #783 completely. This documents that docker will apply `dirperm1`
automatically for systems that support it
Signed-off-by: Daniel, Dao Quang Minh <dqminh89@gmail.com>
Daniel, Dao Quang Minh authored on 2015/03/26 16:46:13Showing 2 changed files
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@@ -280,8 +280,14 @@ The cache for `RUN` instructions can be invalidated by `ADD` instructions. See |
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- [Issue 783](https://github.com/docker/docker/issues/783) is about file |
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permissions problems that can occur when using the AUFS file system. You |
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- might notice it during an attempt to `rm` a file, for example. The issue |
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- describes a workaround. |
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+ might notice it during an attempt to `rm` a file, for example. |
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+ |
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+ For systems that have recent aufs version (i.e., `dirperm1` mount option can |
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+ be set), docker will attempt to fix the issue automatically by mounting |
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+ the layers with `dirperm1` option. More details on `dirperm1` option can be |
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+ found at [`aufs` man page](http://aufs.sourceforge.net/aufs3/man.html) |
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+ |
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+ If your system doesnt have support for `dirperm1`, the issue describes a workaround. |
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## CMD |
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@@ -57,7 +57,14 @@ impact on users. This list will be updated as issues are resolved. |
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* **Unexpected File Permissions in Containers** |
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An idiosyncrasy in AUFS prevents permissions from propagating predictably |
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between upper and lower layers. This can cause issues with accessing private |
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-keys, database instances, etc. For complete information and workarounds see |
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+keys, database instances, etc. |
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+ |
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+For systems that have recent aufs version (i.e., `dirperm1` mount option can |
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+be set), docker will attempt to fix the issue automatically by mounting |
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+the layers with `dirperm1` option. More details on `dirperm1` option can be |
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+found at [`aufs` man page](http://aufs.sourceforge.net/aufs3/man.html) |
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+ |
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+For complete information and workarounds see |
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[Github Issue 783](https://github.com/docker/docker/issues/783). |
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* **Docker Hub incompatible with Safari 8** |