ReadyNAS RN2120v2 OS 6.10.6 freezes

Question

I installed recent OS v6.10.6, made a Factory Reset, made a RAID 10 with the brand new 4xWD Ultrastar DC HC320 8TB and started to copy my files to RN2120v2 using Windows 10 PC. The problem is it sometimes freezes during file copy. Only switch on the back of the unit can bring the NAS back online. After second freeze NAS started resyncing. Antivirus, filesearch, snapshots are turned off. Only SMB and SSH protocols are switched on. Only 1 app is installed - SMB Plus. HDDs SMART shows no errors. What can cause the freezes? I can share the logs taken right after reboot (after second freeze).

/dev/md0 3.7G 491M 3.0G 14%

StephenB · Answer

Vensdale&nbsp;wrote:
/dev/md0 3.7G 491M 3.0G 14%

This is the root (OS) partition, and it has plenty of free space - so not the issue here.
&nbsp;
Vensdale&nbsp;wrote:
The problem is it sometimes freezes during file copy. Only switch on the back of the unit can bring the NAS back online. After second freeze NAS started resyncing.

Despite the healthy SMART stats, this appears to be disk related.&nbsp; Have you looked in system.log, systemd-journal.log and kernel.log for disk or btrfs errors?

Vensdale · Answer

StephenB, thank you for your answer! Here are some excerpts from the mentioned logs just before the manual Reboot.&nbsp;system.logSpoiler (Highlight to read)Jan 29 02:17:01 VENAS CRON[5454]: pam_unix(cron:session): session closed for user rootJan 29 02:31:15 VENAS connmand[2238]: ntp: adjust (slew): -0.015400 secJan 29 02:48:20 VENAS connmand[2238]: ntp: adjust (slew): +0.025409 secJan 29 03:05:25 VENAS connmand[2238]: ntp: adjust (slew): -0.025897 secJan 29 03:15:07 VENAS dbus[2236]: [system] Activating service name='org.opensuse.Snapper' (using servicehelper)Jan 29 03:15:07 VENAS dbus[2236]: [system] Successfully activated service 'org.opensuse.Snapper'Jan 29 03:17:01 VENAS CRON[5953]: pam_unix(cron:session): session opened for user root by (uid=0)Jan 29 03:17:01 VENAS CRON[5954]: (root) CMD ( cd / &amp;&amp; run-parts --report /etc/cron.hourly)Jan 29 03:17:01 VENAS CRON[5953]: pam_unix(cron:session): session closed for user rootJan 29 03:22:29 VENAS connmand[2238]: ntp: adjust (slew): +0.008501 sec-- Reboot --Jan 29 15:45:25 VENAS dbus[2182]: [system] Successfully activated service 'org.freedesktop.systemd1'Jan 29 02:17:01 VENAS CRON[5454]: pam_unix(cron:session): session closed for user rootJan 29 02:31:15 VENAS connmand[2238]: ntp: adjust (slew): -0.015400 secJan 29 02:48:20 VENAS connmand[2238]: ntp: adjust (slew): +0.025409 secJan 29 03:05:25 VENAS connmand[2238]: ntp: adjust (slew): -0.025897 secJan 29 03:15:07 VENAS dbus[2236]: [system] Activating service name='org.opensuse.Snapper' (using servicehelper)Jan 29 03:15:07 VENAS dbus[2236]: [system] Successfully activated service 'org.opensuse.Snapper'Jan 29 03:17:01 VENAS CRON[5953]: pam_unix(cron:session): session opened for user root by (uid=0)Jan 29 03:17:01 VENAS CRON[5954]: (root) CMD ( cd / &amp;&amp; run-parts --report /etc/cron.hourly)Jan 29 03:17:01 VENAS CRON[5953]: pam_unix(cron:session): session closed for user rootJan 29 03:22:29 VENAS connmand[2238]: ntp: adjust (slew): +0.008501 sec-- Reboot --Jan 29 15:45:25 VENAS dbus[2182]: [system] Successfully activated service 'org.freedesktop.systemd1'systemd-journal.logSpoiler (Highlight to read)Jan 29 02:17:01 VENAS CRON[5454]: pam_unix(cron:session): session opened for user root by (uid=0)Jan 29 02:17:01 VENAS CRON[5455]: (root) CMD ( cd / &amp;&amp; run-parts --report /etc/cron.hourly)Jan 29 02:17:01 VENAS CRON[5454]: pam_unix(cron:session): session closed for user rootJan 29 02:25:04 VENAS systemd[1]: systemd-journald-audit.socket: Cannot add dependency job, ignoring: Unit systemd-journald-audit.socket is masked.Jan 29 02:25:04 VENAS systemd[1]: Started Radar Update.Jan 29 02:31:15 VENAS connmand[2238]: ntp: adjust (slew): -0.015400 secJan 29 02:48:20 VENAS connmand[2238]: ntp: adjust (slew): +0.025409 secJan 29 03:05:25 VENAS connmand[2238]: ntp: adjust (slew): -0.025897 secJan 29 03:15:07 VENAS dbus[2236]: [system] Activating service name='org.opensuse.Snapper' (using servicehelper)Jan 29 03:15:07 VENAS dbus[2236]: [system] Successfully activated service 'org.opensuse.Snapper'Jan 29 03:17:01 VENAS CRON[5953]: pam_unix(cron:session): session opened for user root by (uid=0)Jan 29 03:17:01 VENAS CRON[5954]: (root) CMD ( cd / &amp;&amp; run-parts --report /etc/cron.hourly)Jan 29 03:17:01 VENAS CRON[5953]: pam_unix(cron:session): session closed for user rootJan 29 03:22:29 VENAS connmand[2238]: ntp: adjust (slew): +0.008501 sec-- Reboot --Jan 29 15:45:13 VENAS systemd-journald[1056]: Runtime journal (/run/log/journal/) is 8.0M, max 100.8M, 92.8M free.Jan 29 15:45:13 VENAS systemd-journald[1056]: System journal (/var/log/journal/) is 8.0M, max 50.0M, 41.9M free.Jan 29 02:17:01 VENAS CRON[5454]: pam_unix(cron:session): session opened for user root by (uid=0)Jan 29 02:17:01 VENAS CRON[5455]: (root) CMD ( cd / &amp;&amp; run-parts --report /etc/cron.hourly)Jan 29 02:17:01 VENAS CRON[5454]: pam_unix(cron:session): session closed for user rootJan 29 02:25:04 VENAS systemd[1]: systemd-journald-audit.socket: Cannot add dependency job, ignoring: Unit systemd-journald-audit.socket is masked.Jan 29 02:25:04 VENAS systemd[1]: Started Radar Update.Jan 29 02:31:15 VENAS connmand[2238]: ntp: adjust (slew): -0.015400 secJan 29 02:48:20 VENAS connmand[2238]: ntp: adjust (slew): +0.025409 secJan 29 03:05:25 VENAS connmand[2238]: ntp: adjust (slew): -0.025897 secJan 29 03:15:07 VENAS dbus[2236]: [system] Activating service name='org.opensuse.Snapper' (using servicehelper)Jan 29 03:15:07 VENAS dbus[2236]: [system] Successfully activated service 'org.opensuse.Snapper'Jan 29 03:17:01 VENAS CRON[5953]: pam_unix(cron:session): session opened for user root by (uid=0)Jan 29 03:17:01 VENAS CRON[5954]: (root) CMD ( cd / &amp;&amp; run-parts --report /etc/cron.hourly)Jan 29 03:17:01 VENAS CRON[5953]: pam_unix(cron:session): session closed for user rootJan 29 03:22:29 VENAS connmand[2238]: ntp: adjust (slew): +0.008501 sec-- Reboot --Jan 29 15:45:13 VENAS systemd-journald[1056]: Runtime journal (/run/log/journal/) is 8.0M, max 100.8M, 92.8M free.Jan 29 15:45:13 VENAS systemd-journald[1056]: System journal (/var/log/journal/) is 8.0M, max 50.0M, 41.9M free.&nbsp;kernel.logSpoiler (Highlight to read)Jan 28 22:14:09 VENAS kernel: mvneta d0070000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/txJan 28 22:14:09 VENAS kernel: IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready-- Reboot --Jan 29 15:45:14 VENAS kernel: Booting Linux on physical CPU 0x0Jan 29 15:45:14 VENAS kernel: Initializing cgroup subsys cpusetJan 28 22:14:09 VENAS kernel: mvneta d0070000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/txJan 28 22:14:09 VENAS kernel: IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready-- Reboot --Jan 29 15:45:14 VENAS kernel: Booting Linux on physical CPU 0x0Jan 29 15:45:14 VENAS kernel: Initializing cgroup subsys cpusetCan't find any btrfs or disk related errors (Currently I started a disk test. It's still going...

StephenB · Answer

Vensdale&nbsp;wrote:
&nbsp;
&gt;&gt;&gt;&nbsp;Jan 28 22:14:09 VENAS kernel: mvneta d0070000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx

This is a bit unusual, as normally I'd expect to see gigabit ethernet.&nbsp; Are you using a fast ethernet switch?

Vensdale · Answer

RN2120's LAN1 was connected to a Mobile Router. It's 100Mbps. But LAN2 was connected directly to a Windows PC 1Gbps LAN port. Files were copied over LAN2.

Vensdale · Answer

Disk test didn't find any problems with HDDs ((&nbsp;

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ReadyNAS RN2120v2 OS 6.10.6 freezes

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