OpenWrt is macos timemachine problems

[zoltans]

Dear All,

I followed "AFP Netatalk share configuration" guide to make my router a timemachine backup node, but it looks like the kmod-hfsplus driver does not support r/w operations.

$ dmesg ... hfsplus: write access to a journaled filesystem is not supported, use the force option at your own risk, mounting read-only.

The guide does not refer to a specific fs type to use for time machine backups, but it won't be hfs+ (I hoped I can use the same hfs+ usb drive locally and via the router)

What's the recommended fs type to use then?

Thanks,

Zoltan

[stragies]

Perhaps you can disable the journal on the HFS FileSystem? I don't have a Mac, or HFS partitions, but the error message kind of suggests, that HFS+ supports a mode without journal.

Indepedant of that, my answer to your final question ("Which FS on external USB HDD") would be: ext4.

Edit: It is possible to disable the journal on HFS+.

[mike]

Just thought i'd confirm what @stragies pointed out, i used to use Time Machine with OpenWrt and disabling journaling was the only way it would work.

[Andy2244]

The alternative is to use 19.07 or snapshots, which have samba4 and full macOS timemachine support build in, just tick the option in luci.

[zoltans]

Thanks, your answer made me realize that's possible to disable journaling. Now I have to figure out if I can live with a backup disk not having journaling, but that's another topic.

[zoltans]

Is there a doc about that macOS timemachine support in 19? Or it's the same as in 18.x with a configuration front end added?

[Andy2244]

If you use 19.x or snapshots, just install samba4 + samba4 luci, than in luci enable the macOS option and for the share there is a timemachine option and how much space to use. That should be it, than the share should be listed as timemachine target in macos.