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Rootfs / Out of Memory Errors

Featured Replies

Since upgrading to Unraid 7.0.0, my server keeps freezing, requiring hard reboots. After rebooting, the machine often fails to detect the flash drive until I switch USB ports, making me hesitant to reboot remotely. While traveling, it froze again but recovered after a few hours, allowing me to gather data. The Mover Tuning feature seems problematic since the update, but could there be other issues? Should I be concerned about rebooting?

 

plugin: installing: memorystorage.plg
Executing hook script: pre_plugin_checks
plugin: downloading: memorystorage.plg ... done

Executing hook script: pre_plugin_checks


This script may take a few minutes to run, especially if you are manually mounting a remote share outside of /mnt/disks or /mnt/remotes

/usr/bin/du --exclude=/mnt/user --exclude=/mnt/user0 --exclude=/mnt/disks --exclude=/proc --exclude=/sys --exclude=/var/lib/docker --exclude=/boot --exclude=/mnt -h -d2 / 2>/dev/null | grep -v 0$' '
1.7M /.cache/mesa_shader_cache_db
1.7M /.cache
20K /tmp/tailscale
243M /tmp/.mount_firefopFevU6
4.0K /tmp/unraidcheck
132K /tmp/user.scripts
18M /tmp/fix.common.problems
27G /tmp/ca.mover.tuning
4.0K /tmp/ca_notices
36M /tmp/CA_logs
60K /tmp/gui.search
16K /tmp/unassigned.devices
4.0K /tmp/file.activity
4.0K /tmp/disklocation
14M /tmp/community.applications
160K /tmp/appdata.backup
424K /tmp/notifications
1.1M /tmp/plugins
4.0K /tmp/emhttp
27G /tmp
596M /usr/bin
28M /usr/lib
815M /usr/lib64
90M /usr/libexec
463M /usr/local
53M /usr/sbin
362M /usr/share
7.3M /usr/src
1.1M /usr/man
20K /usr/info
300K /usr/include
972K /usr/doc
2.4G /usr
24M /sbin
80K /run/libvirt
2.1M /run/docker
4.0K /run/avahi-daemon
8.0K /run/elogind
4.0K /run/dbus
4.0K /run/hook-state
628K /run/udev
16K /run/blkid
2.9M /run
12K /lib64/pkgconfig
1.8M /lib64/elogind
4.4M /lib64/security
47M /lib64
25K /lib/dhcpcd
192M /lib/firmware
18K /lib/modprobe.d
29M /lib/modules
512 /lib/systemd
8.5M /lib/udev
234M /lib
4.0K /etc/rsyslog.d
1.1M /etc/libvirt
340K /etc/libvirt-
8.0K /etc/fonts
12K /etc/gtk-3.0
40K /etc/zfs
8.0K /etc/OpenCL
4.0K /etc/pkcs11
152K /etc/lvm
8.0K /etc/libnl
8.0K /etc/ssmtp
20K /etc/samba
8.0K /etc/php.d
24K /etc/php-fpm.d
40K /etc/nginx
2.7M /etc/file
24K /etc/avahi
44K /etc/apcupsd
12K /etc/sysstat
44K /etc/security
260K /etc/ssl
568K /etc/ssh
4.0K /etc/nvme
48K /etc/mcelog
100K /etc/mc
60K /etc/logrotate.d
4.0K /etc/sensors.d
9.3M /etc/udev
28K /etc/modprobe.d
112K /etc/pam.d
12K /etc/elogind
4.0K /etc/cron.monthly
4.0K /etc/cron.hourly
20K /etc/cron.daily
4.0K /etc/cron.d
8.0K /etc/cron.weekly
8.0K /etc/dbus-1
4.0K /etc/sasl2
176K /etc/bash_completion.d
80K /etc/default
8.0K /etc/acpi
64K /etc/profile.d
116K /etc/X11
18M /etc
12M /bin
143M /var/sa
544M /var/local
4.0K /var/kerberos
16K /var/state
4.8M /var/cache
16K /var/named
16K /var/tmp
16K /var/spool
4.0K /var/lock
7.9M /var/log
4.6M /var/lib
703M /var
1.8M /root/.cache
4.0K /root/.mozilla
4.0K /root/.dbus
2.1M /root/.pm2
4.0K /root/.config
3.9M /root
30G /
0 /mnt/rootshare
0 /mnt/addons
0 /mnt


Finished.
NOTE: If there is any subdirectory from /mnt appearing in this list, then that means that you have (most likely) a docker app which is directly referencing a non-existant disk or cache pool
script: memorystorage.plg executed
Executing hook script: post_plugin_checks

 

unraid-diagnostics-20250317-0513.zip

  • Community Expert

Yep, 27G in /tmp is definitely not normal.

Seems you have detailed logging enabled for mover tuning and possibly mover itself and it's filling up your memory with tons of logs. Made worse by apparently running the mover every hour.

Edited by Kilrah

  • Community Expert

You should also fix the corruption on your NVME

  • Author
14 minutes ago, Kilrah said:

Yep, 27G in /tmp is definitely not normal.

Seems you have detailed logging enabled for mover tuning and possibly mover itself and it's filling up your memory with tons of logs. Made worse by apparently running the mover every hour.

Thanks. Should I be concerned about rebooting remotely?

 

I'm only hesitant because it failed to boot up after previous freeze ups but that very well may have had to do with hard rebooting while in a frozen state. I won't be back home for another week so I don't want to reboot if it won't boot back up.

  • Author
22 minutes ago, Michael_P said:

You should also fix the corruption on your NVME

Hadn't seen that—thanks for pointing that out. Forgive my ignorance but how do I go about fixing this?

  • Community Expert
21 minutes ago, Ichthus said:

Hadn't seen that—thanks for pointing that out. Forgive my ignorance but how do I go about fixing this?

 

In maintenance mode, run a file system check on it (click on the drive), and follow the instructions

  • Community Expert
1 hour ago, Ichthus said:

Thanks. Should I be concerned about rebooting remotely?

 

I'm only hesitant because it failed to boot up after previous freeze ups but that very well may have had to do with hard rebooting while in a frozen state. I won't be back home for another week so I don't want to reboot if it won't boot back up.

I wouldn't reboot but just delete those logfiles and change the logging settings so it doesn't happen again. Failure to boot can be due to BIOS settings like fast boot you couldn't change remotely.

  • Author
3 hours ago, Michael_P said:

 

In maintenance mode, run a file system check on it (click on the drive), and follow the instructions

I followed the instructions here (https://docs.unraid.net/legacy/FAQ/check-disk-filesystems/) and got the output below.

 

Should I run a filesystem check on a BTRFS pool?

 

UUID:             ae50ab32-ea0b-48e4-9409-dc332166df09
Scrub started:    Mon Mar 17 10:47:52 2025
Status:           finished
Duration:         0:04:41
Total to scrub:   1.39TiB
Rate:             5.07GiB/s
Error summary:    no errors found

 

  • Community Expert

The scrub didn't detect any errors, which is good, but previously some data corruption was detected by btrfs:

 

Mar 16 20:20:28 Unraid kernel: BTRFS error (device nvme1n1p1): bdev /dev/nvme2n1p1 errs: wr 0, rd 0, flush 0, corrupt 3, gen 0
Mar 16 20:22:49 Unraid kernel: BTRFS info (device nvme1n1p1): read error corrected: ino 66719 off 31721656320 (dev /dev/nvme2n1p1 sector 1721374696)

 

There could be an intermittent issue, like bad RAM, for now, I would recommend resetting the stats and keep monitoring.

  • Community Expert
Just now, JorgeB said:

like bad RAM

 

Could explain the goofy USB issues too

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