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path: root/Documentation/filesystems/overlayfs.txt
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* ovl: fix reStructuredText syntax errors in documentationAmir Goldstein2016-12-161-3/+4
| | | | | | | | | - Fix broken long line block quote - Fix missing newline before bullets list - Use correct numbered list syntax Signed-off-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
* ovl: redirect on rename-dirMiklos Szeredi2016-12-161-2/+19
| | | | | | | | | | | | | | | | Current code returns EXDEV when a directory would need to be copied up to move. We could copy up the directory tree in this case, but there's another, simpler solution: point to old lower directory from moved upper directory. This is achieved with a "trusted.overlay.redirect" xattr storing the path relative to the root of the overlay. After such attribute has been set, the directory can be moved without further actions required. This is a backward incompatible feature, old kernels won't be able to correctly mount an overlay containing redirected directories. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
* ovl: update docMiklos Szeredi2016-12-161-3/+3
| | | | | | | | The quirk for file locks and leases no longer applies. Add missing info about renaming directory residing on lower layer. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
* ovl: update docMiklos Szeredi2016-09-011-5/+3
| | | | | | Some of the documented quirks no longer apply. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
* ovl: update documentationMiklos Szeredi2016-05-271-9/+0
| | | | | | Two "fixme" items are actually fixed now. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
* Remove email address from Documentation/filesystems/overlayfs.txtNeilBrown2015-11-111-1/+2
| | | | | | | | | | | I'm getting a surprising large number of questions about overlayfs sent to me personally, rather than to a relevant mailing list. So remove my email address from the documentation, and add a note about looking in the MAINTAINERS file. Signed-off-by: NeilBrown <neilb@suse.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* ovl: document lower layer orderingMiklos Szeredi2015-01-081-2/+6
| | | | | Reported-by: Fabian Sturm <fabian.sturm@aduu.de> Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
* ovl: add testsuite to docsMiklos Szeredi2014-12-131-0/+12
| | | | | Reported-by: Sedat Dilek <sedat.dilek@gmail.com> Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
* ovl: support multiple lower layersMiklos Szeredi2014-12-131-0/+12
| | | | | | | | Allow "lowerdir=" option to contain multiple lower directories separated by a colon (e.g. "lowerdir=/bin:/usr/bin"). Colon characters in filenames can be escaped with a backslash. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
* ovl: rename filesystem type to "overlay"Miklos Szeredi2014-11-201-1/+1
| | | | | | | | | | | | | | | Some distributions carry an "old" format of overlayfs while mainline has a "new" format. The distros will possibly want to keep the old overlayfs alongside the new for compatibility reasons. To make it possible to differentiate the two versions change the name of the new one from "overlayfs" to "overlay". Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Reported-by: Serge Hallyn <serge.hallyn@ubuntu.com> Cc: Andy Whitcroft <apw@canonical.com>
* overlay: overlay filesystem documentationNeil Brown2014-10-241-0/+198
Document the overlay filesystem. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
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