s3ql keeps crashing while using backblaze

[Jaimala D]

my s3ql keeps crashing it works for sometime and then crashes. i have collected the log here they are in two parts please see both of them. I use s3ql as data forlder for nextcloud. I tried to change thread count it has no effect.

System Configuration:

2 cpu core

2 gb ram

command used to mount s3ql :-

mount.s3ql --fg --systemd --authfile /root/.s3ql/authinfo2 --keep-cache --cachesize 15625000 --max-cache-entries 65536 --threads 6 --allow-other --compress none --log none "b2://nextcloud" "/mnt/nextcloud"

Log from s3ql: -

Nov 09 12:27:14 ubuntu systemd[1]: Started Mounts S3 Bucket from b2 to /mnt/nextcloud.
Nov 09 13:27:01 ubuntu mount.s3ql[703]: Encountered ConnectionClosed (connection was interrupted), retrying ObjectW.close (>
Nov 09 13:27:01 ubuntu mount.s3ql[703]: Encountered ConnectionClosed (connection was interrupted), retrying ObjectW.close (>
Nov 09 13:27:02 ubuntu mount.s3ql[703]: Encountered ConnectionClosed (connection was interrupted), retrying ObjectW.close (>
Nov 09 13:27:02 ubuntu mount.s3ql[703]: Encountered ConnectionClosed (connection was interrupted), retrying ObjectW.close (>
Nov 09 13:46:28 ubuntu mount.s3ql[703]: Encountered ConnectionClosed (server closed connection), retrying ObjectW.close (at>
Nov 09 13:46:30 ubuntu mount.s3ql[703]: Encountered B2Error (503 : service_unavailable - no tomes available), retrying Obje>
Nov 09 13:47:05 ubuntu mount.s3ql[703]: Encountered ConnectionClosed (server closed connection), retrying ObjectW.close (at>
Nov 09 13:47:05 ubuntu mount.s3ql[703]: Encountered ConnectionClosed (server closed connection), retrying ObjectW.close (at>
Nov 09 13:47:46 ubuntu mount.s3ql[703]: Encountered ConnectionClosed (connection was interrupted), retrying ObjectW.close (>
Nov 09 13:47:53 ubuntu mount.s3ql[703]: Encountered ConnectionClosed (connection was interrupted), retrying ObjectW.close (>
Nov 09 13:47:55 ubuntu mount.s3ql[703]: Encountered ConnectionClosed (connection was interrupted), retrying ObjectW.close (>
Nov 09 13:55:16 ubuntu mount.s3ql[703]: Encountered ConnectionClosed (connection was interrupted), retrying ObjectW.close (>
Nov 09 13:55:16 ubuntu mount.s3ql[703]: Encountered ConnectionClosed (connection was interrupted), retrying ObjectW.close (>
Nov 09 13:55:17 ubuntu mount.s3ql[703]: Encountered ConnectionClosed (connection was interrupted), retrying ObjectW.close (>
Nov 09 13:59:14 ubuntu mount.s3ql[703]: Encountered ConnectionClosed (server closed connection), retrying ObjectW.close (at>
Nov 09 13:59:22 ubuntu mount.s3ql[703]: Encountered ConnectionClosed (connection was interrupted), retrying ObjectW.close (>
Nov 09 13:59:26 ubuntu mount.s3ql[703]: Encountered ConnectionClosed (server closed connection), retrying ObjectW.close (at>
Nov 09 14:05:13 ubuntu mount.s3ql[703]: Encountered ConnectionClosed (connection was interrupted), retrying ObjectW.close (>
Nov 09 14:05:13 ubuntu mount.s3ql[703]: Encountered ConnectionClosed (connection was interrupted), retrying ObjectW.close (>
Nov 09 14:05:14 ubuntu mount.s3ql[703]: Encountered ConnectionClosed (connection was interrupted), retrying ObjectW.close (>
Nov 09 14:05:14 ubuntu mount.s3ql[703]: Encountered ConnectionClosed (connection was interrupted), retrying ObjectW.close (>
Nov 09 15:30:17 ubuntu mount.s3ql[703]: Encountered ConnectionClosed (connection was interrupted), retrying ObjectW.close (>
Nov 09 15:30:17 ubuntu mount.s3ql[703]: Encountered ConnectionClosed (connection was interrupted), retrying ObjectW.close (>
Nov 09 15:42:28 ubuntu mount.s3ql[703]: Encountered ConnectionClosed (server closed connection), retrying ObjectW.close (at>
Nov 09 15:42:28 ubuntu mount.s3ql[703]: Encountered ConnectionClosed (server closed connection), retrying ObjectW.close (at>
Nov 09 15:49:46 ubuntu mount.s3ql[703]: Encountered ConnectionClosed (server closed connection), retrying ObjectW.close (at>
Nov 09 15:49:46 ubuntu mount.s3ql[703]: Encountered ConnectionClosed (server closed connection), retrying ObjectW.close (at>
Nov 09 15:54:22 ubuntu mount.s3ql[703]: Encountered ConnectionClosed (server closed connection), retrying ObjectW.close (at>
Nov 09 15:54:22 ubuntu mount.s3ql[703]: Encountered ConnectionClosed (server closed connection), retrying ObjectW.close (at>
Nov 09 15:55:27 ubuntu mount.s3ql[703]: Encountered ConnectionClosed (server closed connection), retrying ObjectW.close (at>
Nov 09 16:03:32 ubuntu systemd[1]: nextcloud.service: Main process exited, code=killed, status=9/KILL
Nov 09 16:03:32 ubuntu systemd[1]: nextcloud.service: Failed with result 'signal'.

Log from syslog :-

Nov 09 16:03:32 ubuntu kernel: oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0,global_oom,task_>
Nov 09 16:03:32 ubuntu kernel: Out of memory: Killed process 703 (mount.s3ql) total-vm:1298404kB, anon-rss:117696kB, file-r>
Nov 09 16:03:32 ubuntu kernel: oom_reaper: reaped process 703 (mount.s3ql), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB
Nov 09 16:03:32 ubuntu systemd[1]: nextcloud.service: Main process exited, code=killed, status=9/KILL