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rootless.md: Include GPFS as a parallel filesystem

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Per @rhatdan's request in #3478, this commit makes a note of supporting
General Parallel File System by IBM since it shares the same root issue
as NFS for rootless containers.

Signed-off-by: Justin W. Flory <git@jwf.io>
This commit is contained in:
Justin W. Flory
2019-07-08 11:07:45 -05:00
parent ed3acaecbf
commit 2f29c56542
1 changed files with 4 additions and 4 deletions
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rootless.md
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@ -16,9 +16,9 @@ can easily fail
* Cgroups V2 development for container support is ongoing.
* Can not share container images with CRI-O or other users
* Difficult to use additional stores for sharing content
* Does not work on NFS homedirs
* NFS enforces file creation on different UIDs on the server side and does not understand User Namespace.
* When a container root process like YUM attempts to create a file owned by a different UID, NFS Server denies the creation.
* Does not work on NFS or parallel filesystem homedirs (e.g. [GPFS](https://www.ibm.com/support/knowledgecenter/en/SSFKCN/gpfs_welcome.html))
* NFS and parallel filesystems enforce file creation on different UIDs on the server side and does not understand User Namespace.
* When a container root process like YUM attempts to create a file owned by a different UID, NFS Server/GPFS denies the creation.
* Does not work with homedirs mounted with noexec/nodev
* User can setup storage to point to other directories they can write to that are not mounted noexec/nodev
* Can not use overlayfs driver, but does support fuse-overlayfs
@ -26,7 +26,7 @@ can easily fail
* Only other supported driver is VFS.
* No KATA Container support
* No CNI Support
* CNI wants to modify IPTables, plus other network manipulation that I requires CAP_SYS_ADMIN.
* CNI wants to modify IPTables, plus other network manipulation that requires CAP_SYS_ADMIN.
* There is potential we could probably do some sort of blacklisting of the relevant plugins, and add a new plugin for rootless networking - slirp4netns as one example and there may be others
* Cannot use ping
* [(Can be fixed by setting sysctl on host)](https://github.com/containers/libpod/blob/master/troubleshooting.md#5-rootless-containers-cannot-ping-hosts)