How to setup TimeMachine on a network drive with disk quota
# Give read-only access for tm user root@NAS:/mnt/array1/tm$ cd amber_001122334455.sparsebundle root@NAS:/mnt/array1/tm/amber.sparsebundle$ chown root:root Info.* root@NAS:/mnt/array1/tm/amber.sparsebundle$ chmod a+r-w Info.* # Check access rights: root@NAS:/mnt/array1/tm/amber.sparsebundle# ls -l -r--r--r-- 1 root root 500 Oct 9 20:36 Info.bckup -r--r--r-- 1 root root 500 Oct 9 20:36 Info.plist drwxrwsrwx 3 tm hdusers 1155072 Oct 17 19:08 bands/
Configure TimeMachine
The last step is to configure TimeMachine to backup to network disk. It’s the same process as with usual hdd.
Once TimeMachine is configured, let’s verify that it is backing up normally and will not occupy the whole disk space.
Open Spotlight and type Console — a special program to see your software logs. Matching string for TimeMachine will be backupd
At the console logs you should see something like this:
10/9/12 8:39:36.012 PM com.apple.backupd: Starting standard backup 10/9/12 8:39:36.026 PM com.apple.backupd: Attempting to mount network destination URL: afp://tm@NAS._afpovertcp._tcp.local/tm 10/9/12 8:39:36.480 PM com.apple.backupd: Mounted network destination at mountpoint: /Volumes/tm-1 using URL: afp://tm@NAS._afpovertcp._tcp.local/tm 10/9/12 8:39:53.925 PM com.apple.backupd: Resizing backup disk image from 1024.0 GB to 1834.2 GB 10/9/12 8:39:53.938 PM com.apple.backupd: Could not resize backup disk image (DIHLResizeImage returned 35) 10/9/12 8:39:53.939 PM com.apple.backupd: Renaming /Volumes/tm-1/amber_c82a141a607c.sparsebundle to /Volumes/tm-1/amber.sparsebundle 10/9/12 8:39:53.971 PM com.apple.backupd: Running backup verification 10/9/12 8:39:55.349 PM com.apple.backupd: QUICKCHECK ONLY; FILESYSTEM CLEAN 10/9/12 8:40:57.454 PM com.apple.backupd: Backup verification passed! 10/9/12 8:40:58.953 PM com.apple.backupd: QUICKCHECK ONLY; FILESYSTEM CLEAN 10/9/12 8:41:01.105 PM com.apple.backupd: Disk image /Volumes/tm-1/amber.sparsebundle mounted at: /Volumes/Time Machine 10/9/12 8:41:01.113 PM com.apple.backupd: Backing up to: /Volumes/Time Machine/Backups.backupdb 10/9/12 8:41:01.117 PM com.apple.backupd: Ownership is disabled on the backup destination volume. Enabling. 10/9/12 8:41:12.304 PM com.apple.backupd: Backup content size: 95.2 GB excluded items size: 18.1 GB for volume sys 10/9/12 8:42:20.556 PM com.apple.backupd: Backup content size: 668.6 GB excluded items size: 248.4 GB for volume storage 10/9/12 8:42:20.564 PM com.apple.backupd: 596.84 GB required (including padding), 1023.05 GB available 10/9/12 8:42:20.616 PM com.apple.backupd: Waiting for index to be ready (101)
The message we’re most interested in is com.apple.backupd: Could not resize backup disk image (DIHLResizeImage returned 35), which means that our access rights hack worked and TimeMachine will be limited by 1024GB.
However, reporting will show you the whole disk size as available — don’t be confused by this:
Related info
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