Hi,
For a couple of months, I have been running the 2.5.30 client on macOS 26 backing up to a 2.5.37 server on a Synology NAS on the same network. Since last week I get errors, probably related to the update to macOS 27.
Here is the relevant part from the client log:
2026-09-21 14:07:18: Snapshot mounted at /Volumes/urbackup_snaps/8c231c5e04081a60d2d485c6365c58cf238f74a0cd37268e
2026-09-21 14:07:18: Shadowcopy path: /Volumes/urbackup_snaps/8c231c5e04081a60d2d485c6365c58cf238f74a0cd37268e
2026-09-21 14:07:18: done.
2026-09-21 14:07:18: Removing deleted directories from index for "/"...
2026-09-21 14:07:18: Scanning for changed hard links on volume of "/"...
2026-09-21 14:07:18: Disabling CBT on volume ""
2026-09-21 14:07:18: Indexing "rootfs"...
2026-09-21 14:07:18: [macOS] Skipping "/home" due to macOS exclusion "/home*"
2026-09-21 14:07:18: [macOS] Skipping "/.fseventsd" due to macOS exclusion "/.fseventsd*"
2026-09-21 14:07:18: [macOS] Skipping "/.TemporaryItems" due to macOS exclusion "/.TemporaryItems*"
2026-09-21 14:07:18: [macOS] Skipping "/.Spotlight-V100" due to macOS exclusion "/.Spotlight-V100*"
2026-09-21 14:07:18: [macOS] Skipping "/.DocumentRevisions-V100" due to macOS exclusion "/.DocumentRevisions-V100*"
2026-09-21 14:07:26: ClientService cmd: #ICAz5w0TDgKbMXfYThv2l#2PING RUNNING pc_done=&eta_ms=1525172&status_id=166&speed_bpms=0&total_bytes=-1&done_bytes=0&paused_fb=1#token=2NFgdVAnAX5JQ7WUdDO3
2026-09-21 14:07:28: [macOS] Skipping "/Library/Updates" due to macOS exclusion "/Library/Updates*"
2026-09-21 14:07:28: [macOS] Skipping "/Library/Trial" due to macOS extended attribute exclusion
2026-09-21 14:07:28: [macOS] Skipping "/Library/Application Support/Apple/AssetCache/Data" due to macOS extended attribute exclusion
2026-09-21 14:07:29: ERROR: Cannot stat "/Volumes/urbackup_snaps/8c231c5e04081a60d2d485c6365c58cf238f74a0cd37268e/Library/Caches/com.apple.amsengagementd.classicdatavault": Operation not permitted (1)
2026-09-21 14:07:29: ERROR: Cannot stat "/Volumes/urbackup_snaps/8c231c5e04081a60d2d485c6365c58cf238f74a0cd37268e/Library/Caches/com.apple.aneuserd": Operation not permitted (1)
2026-09-21 14:07:29: ERROR: Cannot stat "/Volumes/urbackup_snaps/8c231c5e04081a60d2d485c6365c58cf238f74a0cd37268e/Library/Caches/com.apple.aned": Operation not permitted (1)
2026-09-21 14:07:29: ERROR: Error while listing files in folder "/Volumes/urbackup_snaps/8c231c5e04081a60d2d485c6365c58cf238f74a0cd37268e/Library/Caches". User may not have permissions to access this folder. Errno is 0
2026-09-21 14:07:29: Deleting shadowcopy for path "/Volumes/urbackup_snaps/8c231c5e04081a60d2d485c6365c58cf238f74a0cd37268e" -2
2026-09-21 14:07:29: Deleted local snapshot '2026-09-21-140716'
2026-09-21 14:07:29: Deleting Shadowcopy for dir "/"
Permissions on the snapshot look like this:
bodo@Macncheese ~ % ls -al /Volumes/urbackup_snaps
total 8
drwxr-xr-x 4 root wheel 128 21 Sep. 14:07 .
drwxr-xr-x 8 root wheel 256 21 Sep. 12:48 ..
drwxr-xr-x@ 22 root wheel 704 19 Sep. 01:26 8c231c5e04081a60d2d485c6365c58cf238f74a0cd37268e
-rw-r--r-- 1 root wheel 18 21 Sep. 14:07 8c231c5e04081a60d2d485c6365c58cf238f74a0cd37268e-snap-date
FWIW, urbackupclientbackend runs with UID 0, urbackupclientgui UID 501.
I’m stymied. Any ideas where to look?
Bodo