Jeremy Teo wrote: > Hello, > > request sponsor for #4890717 want append-only files. > > I have a working prototype where the administrator can put a zfs fs > into "append only" mode by setting the zfs "appendonly" property to > "on" using zfs(1M). > > "append only" mode in this case means > > 1. Applications can only append to any existing files, but cannot > truncate files by creating a new file with the same filename an > existing file, or by writing in a file at an offset other than the end > of the file. (Applications can still create new files) > > 2. Applications cannot remove existing files/directories. > > 3. Applications cannot rename/move existing files/directories. > > Thanks! I hope this is still wanted. :)
This sounds cool! What would you envision it being used for? We're having some discussions about various ways of implementing "append only". There are some requirements around Sarbanes-Oxley about append-only *files*, and the possibility of using ACLs to specify append-only permissions. However, there may also be some use cases for append-only *filesystems* as well. Did you have any in mind? --matt ps. It may be more appropriate to take this discussion over to zfs-discuss or zfs-code, rather than request-sponsor.
