Moved my backup destination

[AartJansen]

Created a new NFS destination (old truenas hardware died, moved zfs pool to a PC)

ct 10 15:47:24 backupupload: upload completed. error: BoxError: Unable to chown /mnt/managedbackups/ad77c02b-ca57-4f26-a7ff-7c33cc6323d3/snapshot/app_0499beed-5f6d-4f2a-aa50-c2e8848986f2.tar.gz: EPERM: operation not permitted, chown '/mnt/managedbackups/ad77c02b-ca57-4f26-a7ff-7c33cc6323d3/snapshot/app_0499beed-5f6d-4f2a-aa50-c2e8848986f2.tar.gz'
    at Object.finish (file:///home/yellowtent/box/src/storage/filesystem.js:103:85)
    at tarPack (file:///home/yellowtent/box/src/backupformat/tgz.js:184:20)
    at process.processTicksAndRejections (node:internal/process/task_queues:104:5)
    at async file:///home/yellowtent/box/src/backupformat/tgz.js:280:38
    at async retry (file:///home/yellowtent/box/src/retry.js:13:20)
    at async Object.upload (file:///home/yellowtent/box/src/backupformat/tgz.js:276:12)
    at async Object.upload (file:///home/yellowtent/box/src/backuptask.js:101:37) {
  [stack]: [Getter/Setter],
  [message]: "Unable to chown /mnt/managedbackups/ad77c02b-ca57-4f26-a7ff-7c33cc6323d3/snapshot/app_0499beed-5f6d-4f2a-aa50-c2e8848986f2.tar.gz: EPERM: operation not permitted, chown '/mnt/managedbackups/ad77c02b-ca57-4f26-a7ff-7c33cc6323d3/snapshot/app_0499beed-5f6d-4f2a-aa50-c2e8848986f2.tar.gz'",
  name: 'BoxError',
  reason: 'External Error',
  extra: {}
}

Deleted old destination, new one has the same files.

[nebulon]

This seems like the permissions for that folder or mount are wrong:

EPERM: operation not permitted, chown '/mnt/managedbackups/ad77c02b-ca57-4f26-a7ff-7c33cc6323d3/snapshot/app_0499beed-5f6d-4f2a-aa50-c2e8848986f2.tar.gz

can you check the permissions and ownership of the files with ls -l /mnt/managedbackups/ad77c02b-ca57-4f26-a7ff-7c33cc6323d3/snapshot/ ?

Most likely you can fix this by chowning the old directory with:

sudo chown yellowtent:yellowtent -R /mnt/managedbackups/ad77c02b-ca57-4f26-a7ff-7c33cc6323d3/

[AartJansen]

@nebulon I tried that command ...
chown: changing ownership of '/mnt/managedbackups/ad77c02b-ca57-4f26-a7ff-7c33cc6323d3/2026-10-05-100001-480/app_file.rotovegas.nz_v1.12.3.tar.gz': Operation not permitted

aart@cloudron:~$ ls -l /mnt/managedbackups/ad77c02b-ca57-4f26-a7ff-7c33cc6323d3/snapshot/
total 335941585
-rwxrwxrwx 1 nobody nogroup         5499 Oct 10 17:01 app_0499beed-5f6d-4f2a-aa50-c2e8848986f2.tar.gz
-rwxrwxrwx 2 aart   root             135 Oct  8 10:00 app_0499beed-5f6d-4f2a-aa50-c2e8848986f2.tar.gz.backupinfo
-rwxrwxrwx 2 aart   root     11682247015 Oct  8 10:06 app_10da5f93-af48-4972-ae9d-4f416962d3ee.tar.gz
-rwxrwxrwx 2 aart   root             144 Oct  8 10:06 app_10da5f93-af48-4972-ae9d-4f416962d3ee.tar.gz.backupinfo
-rwxrwxrwx 1 aart   root             137 Jun 23 11:17 app_1147fc2d-15ca-4113-8fc4-ff5be00d0026.tar.gz.backupinfo
-rwxrwxrwx 2 aart   root           64259 Oct  8 10:06 app_27d99e62-e244-4321-b13d-04250ea4fd4e.tar.gz
-rwxrwxrwx 2 aart   root             137 Oct  8 10:06 app_27d99e62-e244-4321-b13d-04250ea4fd4e.tar.gz.backupinfo
-rwxrwxrwx 2 aart   root     14208216078 Oct  8 10:15 app_2cceca0a-315e-4206-8471-88425deee58a.tar.gz
-rwxrwxrwx 2 aart   root             144 Oct  8 10:15 app_2cceca0a-315e-4206-8471-88425deee58a.tar.gz.backupinfo
-rwxrwxrwx 2 aart   root          119394 Oct  8 10:15 app_3347fdff-0171-4640-9102-a9f18ebe2154.tar.gz
-rwxrwxrwx 2 aart   root             137 Oct  8 10:15 app_3347fdff-0171-4640-9102-a9f18ebe2154.tar.gz.backupinfo
-rwxrwxrwx 2 aart   root       405347142 Oct  8 10:16 app_35d2434d-17e9-49a1-b24a-5573a213955f.tar.gz
-rwxrwxrwx 2 aart   root             142 Oct  8 10:16 app_35d2434d-17e9-49a1-b24a-5573a213955f.tar.gz.backupinfo
-rwxrwxrwx 2 aart   root        15294972 Oct  8 10:17 app_3d7e83c2-76dc-46cb-8898-c299cf82da99.tar.gz
-rwxrwxrwx 2 aart   root             141 Oct  8 10:17 app_3d7e83c2-76dc-46cb-8898-c299cf82da99.tar.gz.backupinfo
-rwxrwxrwx 1 aart   root             136 Jul 21 11:37 app_42c027a9-14a7-4857-ae89-fee1acb068df.tar.gz.backupinfo
-rwxrwxrwx 2 aart   root         2813052 Oct  8 10:17 app_44523e40-7664-471a-b561-1ee071ad1970.tar.gz
-rwxrwxrwx 2 aart   root             140 Oct  8 10:17 app_44523e40-7664-471a-b561-1ee071ad1970.tar.gz.backupinfo
-rwxrwxrwx 2 aart   root        10532906 Oct  8 10:17 app_45b2f383-f239-48c5-89cc-d1fece55c6d6.tar.gz
-rwxrwxrwx 2 aart   root             139 Oct  8 10:17 app_45b2f383-f239-48c5-89cc-d1fece55c6d6.tar.gz.backupinfo
-rwxrwxrwx 1 aart   root    214987177984 May 16 00:03 app_45d2f099-a55f-4da1-b62e-29b7ed7f21ba.tar.gz
-rw-r--r-- 1 aart   root             149 Nov 21  2025 app_45d2f099-a55f-4da1-b62e-29b7ed7f21ba.tar.gz.backupinfo
-rwxrwxrwx 1 nobody nogroup     23812316 Oct 10 17:01 app_484b2dd6-7856-4a2f-a637-cac90510d702.tar.gz

[nebulon]

If the command run as root (sudo) cannot change the ownership then your mountpoint does not support this apparently. You have to check the mountpoint options or your nfs server then.

[AartJansen]

RIght, had to add no_root_squash to the NFS server. remounted & All seems to work again now. Thanks!