On 10/30/2017 01:30 PM, Greg Freemyer wrote:
Are you familiar with LTFS which LTO has supported since 2010 or so:
https://en.wikipedia.org/wiki/Linear_Tape_File_System#Nature
Thanks for the pointer, Greg. I don't recall hearing about LTFS
You use your library to make a full copy of the filesystem, then as files change, you write them to the tape via LTFS.
Unfortunately, that's all I know about LTFS. Questions you need to answer:
- Does openSUSE (or your OS of choice) have support
Looks like its available on SLES.
- Does it provide point in time recovery. Or are you stuck with only the latest version of files.
I think you're stuck with the latest versions.
- What happens when a file in primary storage is deleted?
The blocks are marked "unavailable" and the space not reclaimed. I've been using rdiff-backup for years. It works well for on-line backups. It maintains a complete current image of the source filesystem, and calculates past point-restores as diffs. I run it on a daily basis and couldn't do without it now. I can restore with one day granularity going back for as many days as I've allowed. I usually trim it at 30-days. but it could archive for years. But I don't know how to use it with tape. Regards, Lew -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org