Re: Time Machine stalling

In article <1iqmjr8.1gd25dvfqb0i7N%dempson@xxxxxxxxxxxxx>,
dempson@xxxxxxxxxxxxx (David Empson) wrote:

JZ <JZ@xxxxxxxxxxxxxxxx> wrote:

Kevin McMurtrie <kevinmcm@xxxxxxxxx> wrote:
- The HFS+ hard links used by Time Machine are buggy and prone to
corruption. Run Disk Utility on the disk image frequently.

You mean Repair Permissions from the install DVD?

Kevin meant Repair Disk.

Repairing permissions will achieve nothing if done on a Time Machine
backup. It only knows how to repair permissions for files which form
part of an active system.

And I wonder if there is any other utility that Repairs Permissions
better than Disk Utility?

I doubt it. Everything which provides a Repair Permissions mechanism
uses the same underlying database and probably the same support code to
access it.

- Spotlight stupidly tries to index the "bands" of the sparsebundle disk
image. If the sparsebundle isn't excluded from Spotlight, it can thrash
almost endlessly between indexing the disk image filesystem and the disk
image storage bands.

One thing I overlooked before was that I've disabled Spotlight (well I
tried to in the Terminal but I'm not sure how successful that was.) I
excluded the main hard drive from Spotlight's search parameters in the
Privacy area of its preferences. I wonder if that influenced anything?
Does TM need Spotlight to run as per normal?

TM will be able to do backups whether or not your source volume is
indexed with Spotlight. TM depends on the "fsevents" mechanism, which is
also used by Spotlight to keep track of what has changed (and therefore
what needs to be reindexed).

Turning off Spotlight doesn't affect generation and storage of fsevents,
so Time Machine will still be happy.

Have you been able to turn it off for the backed up files; the mounted
sparsebundle? I haven't been able to. Indexing happens regardless of
any command-line configuration. Disabling the mds and mdworker
executables caused a Time Machine error for me.

I'm backing up my server to a wireless NAS in a protected location. As
expected, it's really slow. Being able to disable Spotlight indexing
would sure speed it up.

--
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