proxmox-backup-client on QNAP, armv71

[nordeep]

First of all, thank you for your work!

I am trying to use a static build of proxmox-backup-client on a QNAP TS‑831X running QTS 5.2.2 (armv71).

When I use build 2.1.5, I get the following error:

[~] # export PBS_FINGERPRINT='fingerprint'; export PBS_PASSWORD=token; /share/CACHEDEV1_DATA/pbc/proxmox-backup-client-v2.1.5/proxmox-backup-client.sh backup kocmoc.pxar:/share/CACHEDEV5_DATA --repository 'kocmoc@pbs!kocmoc@192.168.0.11:storage0'
Starting backup: host/KOCMOC/2025-10-09T06:35:42Z
Client name: KOCMOC
Starting backup protocol: Thu Oct  9 09:35:42 2025
certificate validation failed - context depth != 0
Error: error trying to connect: error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed:../ssl/statem/statem_clnt.c:1914:

When I use build 4.0.12, I get the following error:

[~] # export PBS_FINGERPRINT='fingerprint'; export PBS_PASSWORD=token; /share/CACHEDEV1_DATA/pbc/proxmox-backup-client-v4.0.12-arm32/proxmox-backup-client.sh backup kocmoc.pxar:/share/CACHEDEV5_DATA --repository 'kocmoc@pbs!kocmoc@192.168.0.11:storage0'
Starting backup: host/KOCMOC/2025-10-09T06:37:37Z
Client name: KOCMOC
Starting backup protocol: Thu Oct  9 09:37:37 2025
Downloading previous manifest (Fri Oct  3 18:08:31 2025)
Upload directory '/share/CACHEDEV5_DATA' to 'kocmoc@pbs!kocmoc@192.168.178.0:8007:storage0' as kocmoc.pxar.didx
Error downloading .didx from previous manifest: unable to read dynamic index 'kocmoc.pxar.didx' - Invalid argument (os error 22)
processed 1.148 GiB in 1m, uploaded 1.112 GiB
processed 2.682 GiB in 2m, uploaded 2.613 GiB
catalog upload error - channel closed
unclosed encoder dropped
closed encoder dropped with state
unfinished encoder state dropped
finished encoder state with errors
Error: pipelined request failed: dynamic writer 'kocmoc.pxar.didx' append chunk failed - got strange chunk offset (4296535189 != 1567893)

Could you perhaps give me some recommendation on what else I might try?

[ayufan]

Arm32. I do not test the recent version. Try to use old build of arm32. It is there somewhere.

…

On Thu, 9 Oct 2025 at 08:42, nordeep ***@***.***> wrote: *nordeep* created an issue (ayufan/pve-backup-server-dockerfiles#99) <#99> First of all, thank you for your work! I am trying to use a static build of proxmox-backup-client on a QNAP TS‑831X running QTS 5.2.2 (armv71). When I use build 2.1.5, I get the following error: [~] # export PBS_FINGERPRINT='fingerprint'; export PBS_PASSWORD=token; /share/CACHEDEV1_DATA/pbc/proxmox-backup-client-v2.1.5/proxmox-backup-client.sh backup kocmoc.pxar:/share/CACHEDEV5_DATA --repository ***@***.******@***.***:storage0' Starting backup: host/KOCMOC/2025-10-09T06:35:42Z Client name: KOCMOC Starting backup protocol: Thu Oct 9 09:35:42 2025 certificate validation failed - context depth != 0 Error: error trying to connect: error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed:../ssl/statem/statem_clnt.c:1914: When I use build 4.0.12, I get the following error: [~] # export PBS_FINGERPRINT='fingerprint'; export PBS_PASSWORD=token; /share/CACHEDEV1_DATA/pbc/proxmox-backup-client-v4.0.12-arm32/proxmox-backup-client.sh backup kocmoc.pxar:/share/CACHEDEV5_DATA --repository ***@***.******@***.***:storage0' Starting backup: host/KOCMOC/2025-10-09T06:37:37Z Client name: KOCMOC Starting backup protocol: Thu Oct 9 09:37:37 2025 Downloading previous manifest (Fri Oct 3 18:08:31 2025) Upload directory '/share/CACHEDEV5_DATA' to ***@***.******@***.***:8007:storage0' as kocmoc.pxar.didx Error downloading .didx from previous manifest: unable to read dynamic index 'kocmoc.pxar.didx' - Invalid argument (os error 22) processed 1.148 GiB in 1m, uploaded 1.112 GiB processed 2.682 GiB in 2m, uploaded 2.613 GiB catalog upload error - channel closed unclosed encoder dropped closed encoder dropped with state unfinished encoder state dropped finished encoder state with errors Error: pipelined request failed: dynamic writer 'kocmoc.pxar.didx' append chunk failed - got strange chunk offset (4296535189 != 1567893) Could you perhaps give me some recommendation on what else I might try? — Reply to this email directly, view it on GitHub <#99>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AASOSQPHCGDIUFJAN53MVY33WX7XBAVCNFSM6AAAAACIWLNVBWVHI2DSMVQWIX3LMV43ASLTON2WKOZTGQ4TOOBUGM4TMNY> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[nordeep]

I also tried version 1.1.9, but unfortunately it has the same SSL issues as version 2.1.5.

[~] # export PBS_FINGERPRINT='fingerprint''; export PBS_PASSWORD=token; /share/CACHEDEV1_DATA/pbc/proxmox-backup-client-v1.1.9/proxmox-backup-client.sh backup kocmoc.pxar:/share/CACHEDEV5_DATA --repository 'kocmoc@pbs!kocmoc@192.168.0.11:storage0'
Starting backup: host/KOCMOC/2025-10-09T06:53:31Z
Client name: KOCMOC
Starting backup protocol: Thu Oct  9 09:53:31 2025
certificate validation failed - context depth != 0
Error: error trying to connect: error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed:../ssl/statem/statem_clnt.c:1913:

[ayufan]

Interesting. Fingerprint should make it work. I will try to debug this at somepoint, but cannot promise. The arm32 is finicky a bit.

[nordeep]

And it also looks strange. When I try to use a fully qualified domain name for the connection, proxmox‑backup‑client returns an error — dns error: failed to lookup address information: Name or service not known. Yet the DNS resolver works correctly on the host (google.com as example).

[~] # export PBS_FINGERPRINT='fingerprint'; export PBS_PASSWORD=token; /share/CACHEDEV1_DATA/pbc/proxmox-backup-client-v2.1.5/proxmox-backup-client.sh backup kocmoc.pxar:/share/CACHEDEV5_DATA --repository 'kocmoc@pbs!kocmoc@google.com:storage0'
Starting backup: host/KOCMOC/2025-10-09T07:32:47Z
Client name: KOCMOC
Starting backup protocol: Thu Oct  9 10:32:47 2025
Error: error trying to connect: error connecting to https://google.com:8007/ - dns error: failed to lookup address information: Name or service not known
[~] # ping google.com
PING google.com (64.233.164.102): 56 data bytes
64 bytes from 64.233.164.102: seq=0 ttl=112 time=15.415 ms
^C
--- google.com ping statistics ---
1 packets transmitted, 1 packets received, 0% packet loss
round-trip min/avg/max = 15.415/15.415/15.415 ms

[nordeep]

As far as I can tell, the older versions don’t work because my QNAP is running the old 4.2.8 kernel, which lacks support for statx(). Yet, the latest version of the proxmox-backup-client-v4.0.12-arm32 works partially.

I would try to rebuild proxmox‑backup‑client‑2.1.5 without statx() support, if that’s possible. However, I don’t know how to do that.