Comments on: HOWTO: Time Machine tweaking: fixing ACLs and extended attributes using fsaclctl and chflags

By: ThomasT

ThomasT — Thu, 18 Feb 2010 12:30:49 +0000

OK, there is still a problem left: It appears I can not delete any symlinks, not even with “sudo rm -f”. ACLs are disabled with fsaclctl. This makes no sense.

By: ThomasT

ThomasT — Thu, 18 Feb 2010 12:09:44 +0000

A quick update: I could copy the fsaclctl command from a 10.5 system and it runs fine. This allowed me to disable the ACLs as described.

By: max

max — Thu, 18 Feb 2010 12:01:27 +0000

Yes – I don’t know why they removed that from 10.6. I can send you the fsaclctl executable from 10.5 if you want to live dangerously — I have a colleague who successfully used it on 10.6.

By: ThomasT

ThomasT — Thu, 18 Feb 2010 11:51:22 +0000

Unfortunately, this won’t work any more in Snow Leopard (10.6), because the fsaclctl is not present there.

Besides, all I try to do is to erase the backups of the /System and a particular Users subfolder. While in general deleting of backups can be done via the graphical TM interface, the System and a user’s Desktop folder seem to have special permissions that won’t allow deletion. So I’m trying to remove any possible ACLs on these folders, which fails because the OS doesn’t let me (any attempt to use “chmod -N” or “chmod -a” results in “operation not permitted”.

Any suggestions?

By: One More Thing :: Bekijk onderwerp - Time Machine terugzetten

One More Thing :: Bekijk onderwerp - Time Machine terugzetten — Sat, 17 Oct 2009 16:38:51 +0000

[...] uitzetten van ACL op de juiste bestanden en/of mappen voldoende is om het probleem op te lossen. HOWTO: Time Machine tweaking: fixing ACLs and extended attributes using fsaclctl and chflags. Situatie in de Time Machine [...]

By: Apple - Support - Discussions - Time Machine does not obey exclusions ...

Apple - Support - Discussions - Time Machine does not obey exclusions ... — Tue, 08 Sep 2009 04:48:25 +0000

[...] googling for “acl writeattr” I found an article at: http://www.thirdbit.net/articles/2009/03/03/time-machine-tweaking-fixing-acls-and-extended-attribute... What I learned is that, in the Terminal one can turn off use of acl’s for a given volume, with: [...]

By: Ryan Davis

Ryan Davis — Mon, 24 Aug 2009 07:26:14 +0000

Deleting a bunch of ISOs is easier done from within time machine itself. Find them via the search field or manual navigation, select, and use the contextual menu to delete all copies of them.

A better example is when you need to muck with the metadata of time machine. One thing TM does is to embed the serial number of the CPU of your machine. If you buy a new machine, restore fully into it, it’d be nice if the next backup started where the previous one left off, but it won’t. You have to use fsaclctl + xattr to tell TM “No no, these are the backups for THIS machine”.