Hi,
Folders such as /dev those are a device files "dev=device" , and its ok to be at 100% usage .
Notice if you issue the request storage cleanup command those files will stay at 100% usage because this command mostly will affect the /var /tmp /log .. folders .
root> show system storage
fpc0:
--------------------------------------------------------------------------
Filesystem Size Used Avail Capacity Mounted on
/dev/da0s1a 183M 112M 57M 66% /
devfs 1.0K 1.0K 0B 100% /dev
/dev/md0 58M 58M 0B 100% /packages/mnt/jbase
/dev/md1 2.6M 2.6M 0B 100% /packages/mnt/fips-mode-arm-12.3R9.4
/dev/md2 11M 11M 0B 100% /packages/mnt/jcrypto-ex-12.3R9.4
/dev/md3 5.0M 5.0M 0B 100% /packages/mnt/jdocs-ex-12.3R9.4
/dev/md4 87M 87M 0B 100% /packages/mnt/jkernel-ex-2200-12.3R9.4
/dev/md5 18M 18M 0B 100% /packages/mnt/jpfe-ex22x-12.3R9.4
/dev/md6 31M 31M 0B 100% /packages/mnt/jroute-ex-12.3R9.4
/dev/md7 18M 18M 0B 100% /packages/mnt/jswitch-ex-12.3R9.4
/dev/md8 24M 24M 0B 100% /packages/mnt/jweb-ex-12.3R9.4
/dev/da0s3e 123M 1.3M 112M 1% /var
/dev/md9 126M 14K 116M 0% /tmp
/dev/da0s3d 369M 146K 339M 0% /var/tmp
/dev/da0s4d 62M 48K 57M 0% /config
/dev/md10 59M 19M 35M 35% /var/rundb
procfs 4.0K 4.0K 0B 100% /proc
/var/jail/etc 123M 1.3M 112M 1% /packages/mnt/jweb-ex-12.3R9.4/jail/var/etc
/var/jail/run 123M 1.3M 112M 1% /packages/mnt/jweb-ex-12.3R9.4/jail/var/run
/var/jail/tmp 123M 1.3M 112M 1% /packages/mnt/jweb-ex-12.3R9.4/jail/var/tmp
/var/tmp 369M 146K 339M 0% /packages/mnt/jweb-ex-12.3R9.4/jail/var/tmp/uploads
devfs 1.0K 1.0K 0B 100% /packages/mnt/jweb-ex-12.3R9.4/jail/dev
{master:0}
root> request system storage cleanup
Please check the list of files to be deleted using the dry-run option. i.e.
request system storage cleanup dry-run
Do you want to proceed ? [yes,no] (no) yes
fpc0:
--------------------------------------------------------------------------
List of files to delete:
Size Date Name
11B Feb 12 14:28 /var/jail/tmp/alarmd.ts
112B Feb 12 16:05 /var/log/default-log-messages.0.gz
5252B Feb 12 14:25 /var/log/dhcp_logfile.0.gz
9169B Feb 12 14:16 /var/log/dhcp_logfile.1.gz
5969B Feb 12 16:05 /var/log/interactive-commands.0.gz
21.0K Feb 12 16:05 /var/log/messages.0.gz
129B Feb 12 14:17 /var/log/wtmp.0.gz
130B Feb 12 14:08 /var/log/wtmp.1.gz
3898B Feb 12 14:11 /var/tmp/ex_autod_config
2998B Feb 12 14:11 /var/tmp/ex_autod_rollback_cfg
124.0K Feb 12 14:11 /var/tmp/gres-tp/env.dat
0B Feb 12 14:05 /var/tmp/gres-tp/lock
0B Feb 12 14:11 /var/tmp/rtsdb/if-rtsdb
{master:0}
root> show system storage
fpc0:
--------------------------------------------------------------------------
Filesystem Size Used Avail Capacity Mounted on
/dev/da0s1a 183M 112M 57M 66% /
devfs 1.0K 1.0K 0B 100% /dev
/dev/md0 58M 58M 0B 100% /packages/mnt/jbase
/dev/md1 2.6M 2.6M 0B 100% /packages/mnt/fips-mode-arm-12.3R9.4
/dev/md2 11M 11M 0B 100% /packages/mnt/jcrypto-ex-12.3R9.4
/dev/md3 5.0M 5.0M 0B 100% /packages/mnt/jdocs-ex-12.3R9.4
/dev/md4 87M 87M 0B 100% /packages/mnt/jkernel-ex-2200-12.3R9.4
/dev/md5 18M 18M 0B 100% /packages/mnt/jpfe-ex22x-12.3R9.4
/dev/md6 31M 31M 0B 100% /packages/mnt/jroute-ex-12.3R9.4
/dev/md7 18M 18M 0B 100% /packages/mnt/jswitch-ex-12.3R9.4
/dev/md8 24M 24M 0B 100% /packages/mnt/jweb-ex-12.3R9.4
/dev/da0s3e 123M 1.1M 112M 1% /var
/dev/md9 126M 14K 116M 0% /tmp
/dev/da0s3d 369M 138K 339M 0% /var/tmp
/dev/da0s4d 62M 48K 57M 0% /config
/dev/md10 59M 19M 35M 35% /var/rundb
procfs 4.0K 4.0K 0B 100% /proc
/var/jail/etc 123M 1.1M 112M 1% /packages/mnt/jweb-ex-12.3R9.4/jail/var/etc
/var/jail/run 123M 1.1M 112M 1% /packages/mnt/jweb-ex-12.3R9.4/jail/var/run
/var/jail/tmp 123M 1.1M 112M 1% /packages/mnt/jweb-ex-12.3R9.4/jail/var/tmp
/var/tmp 369M 138K 339M 0% /packages/mnt/jweb-ex-12.3R9.4/jail/var/tmp/uploads
devfs 1.0K 1.0K 0B 100% /packages/mnt/jweb-ex-12.3R9.4/jail/dev
/proc/ directory contains a number of directories with numerical names.
These directories are called process directories, as they are named after a program's process ID and contain information specific to that process. So this kind of directory also you cannot manage its usage and it is not affected by the request storage cleanup command .
root@:RE:0% cd /proc/
root@:RE:0% ls
0 1214 1230 1242 1253 17 2208 304 4 50
1 1215 1231 1243 1265 18 2231 31 40 6
10 1216 1232 1244 13 180 23 32 41 7
100 1217 1233 1245 14 19 24 33 43 8
11 1223 1234 1246 140 2 25 34 44 80
12 1224 1235 1247 15 20 26 340 45 856
120 1225 1236 1248 16 200 27 35 46 9
1209 1226 1237 1249 160 21 28 36 47 949
1210 1227 1238 1250 1669 22 29 37 48 curproc
1211 1228 1239 1251 1687 220 3 38 49
1213 1229 1241 1252 1688 2207 30 39 5
More useful information to read about this folder can be found here