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Add note regarding TemplateBasedVM directory inheritance and persistence

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(fixes QubesOS/qubes-issues#1336)
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Axon 2015-10-16 00:27:45 +00:00
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commit a1999e6f09
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en/developers/fundamentals/template-implementation.md
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@ -26,6 +26,8 @@ This is mounted as /rw and here is placed all VM private data. This includes:
- */usr/local* – which is symlink to /rw/usrlocal
- some config files (/rw/config) called by qubes core scripts (ex /rw/config/rc.local)
**Note:** Whenever a TemplateBasedVM is created, the contents of the `/home` directory of its parent TemplateVM is copied to the child TemplateBasedVM's `/home`. From that point onward, the child TemplateBasedVM's `/home` is independent its parent TemplateVM's `/home`, which means that any subsequent changes to the parent TemplateVM's `/home` will no longer affect the child TemplateBasedVM's `/home`. Once a TemplateBasedVM has been created, any changes in its `/home`, `/usr/local`, or `/rw/config` directories will be persistent across reboots, which means that any files stored there will still be available after restarting the TemplateBasedVM. No changes in any other directories in TemplateBasedVMs persist in this manner. If you would like to make changes in other directories which *do* persist in this manner, you must make those changes in the parent TemplateVM.
modules.img (xvdd)
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