TrueNAS Core 13.0-U6.8. I think this started happening when I exported a pool then re-imported it to replace a set of smaller SSD drives with larger WD Red drives. Every 7-10 days, the /var folder is full, and things like the SMB service stop working. A reboot fixes it. tmpfs is mounted on /var. It says the size is 11Gb. When it is getting full, like now it shows 5.1Gb, I try to check the /var partition for what could be filling it up but I am not seeing it. I just can’t find any large files or folders that could be causing this. Below are my current outputs of the folder sizes (du -sh) and list of files in the root of /var
root@freenas01[/var]# df -h /var
Filesystem Size Used Avail Capacity Mounted on
tmpfs 11G 5.1G 5.5G 48% /var
root@freenas01[/var]# pwd
/var
root@freenas01[/var]# du -sh *
0B account
0B agentx
0B at
0B audit
0B authpf
0B backups
0B cache
4.0K crash
0B cron
54M db
0B empty
0B games
0B heimdal
4.0K lib
0B log
13K log.20260213092216
512B mail
4.0K md_size
4.0K msgs
16K netatalk
0B preserve
du: fts_read: No such file or directory
root@freenas01[/var]# ls -l
total 11
drwxr-x--- 2 root wheel 0 Feb 1 17:17 account
drwxr-xr-x 2 root wheel 0 Feb 1 17:17 agentx
drwxr-xr-x 4 root wheel 128 Feb 1 17:17 at
drwxr-x--- 4 root audit 128 Feb 1 17:17 audit
drwxrwx--- 2 root authpf 0 Feb 1 17:17 authpf
drwxr-x--- 2 root wheel 0 Feb 1 17:17 backups
drwxr-xr-x 4 root wheel 128 Feb 1 17:17 cache
drwxr-x--- 2 root wheel 64 Feb 1 17:15 crash
drwxr-x--- 3 root wheel 64 Feb 1 17:17 cron
drwxr-xr-x 17 root wheel 1600 Feb 13 09:22 db
dr-xr-xr-x 2 root wheel 0 Feb 1 17:17 empty
drwxrwxr-x 2 root games 0 Feb 1 17:17 games
drwx------ 2 root wheel 0 Feb 1 17:17 heimdal
drwxr-xr-x 4 root wheel 128 Feb 1 17:17 lib
lrwxr-xr-x 1 root wheel 58 Feb 13 09:22 log -> /var/db/system/syslog-1e9984bcf13340bcb68bc263ecb0a902/log
drwxr-xr-x 7 root wheel 576 Feb 13 09:21 log.20260213092216
drwxrwxr-x 2 root mail 576 Feb 1 17:15 mail
-rw-r--r-- 1 root wheel 1 Feb 1 17:15 md_size
drwxr-xr-x 2 daemon wheel 64 Feb 13 09:22 msgs
drwxr-xr-x 3 root wheel 256 Feb 13 09:22 netatalk
drwxr-xr-x 2 root wheel 0 Feb 1 17:17 preserve
drwxr-xr-x 14 root wheel 2752 Feb 13 09:22 run
drwxrwxr-x 2 root daemon 0 Feb 1 17:17 rwho
drwxr-xr-x 7 root wheel 320 Feb 1 17:17 spool
drwxrwxrwt 8 root wheel 2496 Feb 18 16:04 tmp
drwxr-xr-x 3 59 59 64 Feb 1 17:17 unbound
drwxr-xr-x 2 root wheel 128 Feb 1 17:15 yp