C9105 Wireless Controller - %PLATFORM-1-NOSPACE: bootflash : no space

[kish02]

Hi, can you help me with below. 

I'm having alerts on my Cisco Wireless Controller : %PLATFORM-1-NOSPACE: bootflash : no space alarm assert

device#dir bootflash:
Directory of bootflash:/

381909 -rw- 53477376 Apr 23 2024 09:53:33 +08:00 .USWAP.img
273 drwx 160 Apr 23 2024 09:50:10 +08:00 tracelogs
428318 -rw- 97666 Apr 19 2024 08:57:08 +08:00 CBUC9105-B_10a8299816a0.crash
327 -rw- 0 Apr 19 2024 08:53:41 +08:00 controller_launch_success
224 -rw- 27749 Apr 19 2024 08:52:56 +08:00 mewlc_startup.log
258 drwx 160 Apr 3 2024 01:38:00 +08:00 core
271 -rw- 41 Mar 3 2024 21:03:29 +08:00 pvp_status
295 -rw- 211 Mar 3 2024 21:03:00 +08:00 csrlxc-cfg.log
270 -rw- 7698 Mar 3 2024 21:01:23 +08:00 ewc_day0_device_provisioning_guide
269 -rw- 134899 Mar 3 2024 21:01:23 +08:00 memleak.tcl
265 drwx 504 Mar 3 2024 21:01:17 +08:00 dc_profile_dir
39856 -rw- 10 Mar 3 2024 20:58:55 +08:00 stable_remote_ap_version
39857 -rw- 16 Mar 3 2024 20:58:55 +08:00 stable_remote_controller_version
381821 drwx 288 Mar 3 2024 20:56:37 +08:00 chasfs
215 -rw- 2 Mar 3 2024 20:56:37 +08:00 crash_count
381831 -rw- 11 Mar 3 2024 20:56:37 +08:00 MERAKI_SERIAL
252 -rw- 15 Mar 3 2024 20:56:37 +08:00 controller_version.info
238 drwx 256 Mar 3 2024 20:56:37 +08:00 archives
381830 -rw- 3 Mar 3 2024 20:56:37 +08:00 COOKIE_VID
381829 -rw- 20 Mar 3 2024 20:56:37 +08:00 COOKIE_PID
381828 -rw- 17 Mar 3 2024 20:56:37 +08:00 COOKIE_MAC
216 -rw- 2 Mar 3 2024 20:56:37 +08:00 recovery_mode
236 -rw- 7 Mar 3 2024 20:56:33 +08:00 mgmte_intf
381813 -rw- 27356 Mar 3 2024 20:55:51 +08:00 mewlc_startup_last_run.log
893 -rw- 0 Mar 18 2023 11:18:10 +08:00 last_recovery_mode_reason
891 -rw- 16 Mar 18 2023 11:18:10 +08:00 stable_controller_version
892 -rw- 10 Mar 18 2023 11:18:10 +08:00 stable_ap_version
135 drwx 312 Mar 18 2023 09:50:41 +08:00 .installer
142 drwx 160 Mar 5 2023 01:47:38 +08:00 .prst_sync
10911 -rw- 79960 Jan 25 2023 08:34:28 +08:00 CBUC9105-C_10a8299816e0.crash
239 drwx 240 Dec 3 2022 08:46:47 +08:00 webui_helper
312 drwx 320 Dec 3 2022 08:12:37 +08:00 pnp-tech
160 drwx 368 Dec 3 2022 08:04:54 +08:00 .dbpersist
294 drwx 160 Dec 3 2022 08:04:50 +08:00 license_evlog
293 drwx 160 Dec 3 2022 08:04:40 +08:00 pnp-info
153 drwx 160 Dec 3 2022 08:03:28 +08:00 .CRFT
261 drwx 224 Dec 3 2022 08:03:24 +08:00 bootlog_history
147 drwx 160 Dec 3 2022 08:03:21 +08:00 .rollback_timer
259 drwx 232 Dec 3 2022 08:03:08 +08:00 iox
254 drwx 160 Dec 3 2022 08:02:09 +08:00 certs
247 -rw- 51 Dec 3 2022 08:02:07 +08:00 rommon_vars
253 drwx 160 Dec 3 2022 08:02:07 +08:00 webauth_extract

545398784 bytes total (2711552 bytes free)

Is this mean im low on storage? what files/logs that should be cleanup?

Note: Under Troubleshooting->  Core Dump and System Report - this is empty

Thank you in advance.

[marce1000]

             - Delete *.crash and *.log (no harm)

 M.

[kish02]

Thanks for the reponse but .crash and .log files are only KB files, did not do much

[marce1000]

          - Content of tracelogs  directory can be deleted too , 

 M.

[kish02]

it's empty

[kish02]

  In show file systems i have this allocation for bootflash:  545398784

dir bootflash: has only 53477376 as the largest file, any idea where's the rest of the space?

[marce1000]

                 >....53477376  (largest file) 
  - What is the name of this largest file (can't immediately find it)

 M.

[kish02]

filename is  .USWAP.img

[marce1000]

                        >...filename is  .USWAP.img
  - Ok  that one must stay ;  I also noted an ap_images: directory , note that the EWC AP must make client ap images available using a tftp server as a 'relay' and not maintaining the images by itself. If there is anything in there , then remove it all , 

 M.

[kish02]

nothing's in there as well

[marce1000]

 - Well for the time being I can only advise to do a reboot too (if there has been a long uptime for instance) ; which can sometimes include cleanup actions on the bootflash.            Otherwise involve TAC , or others may bump in , 

 M.

[kish02]

@marce1000 thank you for your assistance. I had rebooted the AP that was acting as controller but same problem. For now, I have switched the other AP as the controller. Will check further that one device.

[marce1000]

            - Ok, you may for instance factory reset it and re-install , 

 M.

[marce1000]

 -  Check if you have older software versions on it (such as binaries) and delete them too , and or anything with *log* in it , 

 M.

[Rich R]

Also delete anything in core directory.

And do "install remove inactive" - unlikely to find anything else but worth doing to be sure.

EWC is inherently limited because it's just an AP not a proper WLC.
You didn't mention what version you're running and what version it was upgraded from?
If you didn't follow the recommended upgrade path then the flash partition may be smaller than it should be.
eg: https://www.cisco.com/c/en/us/td/docs/wireless/controller/9800/17-9/release-notes/rn-17-9-9800.html#Cisco_Concept.dita_59a2987f-2633-4630-8c7b-a8e8aecdeaf7

And like @marce1000 says, if all else fails do a factory default reset and then restore your config (or simply sync from the other AP).  Flash running out is a common "feature" of Mobility Express (the previous incarnation for Wave 2 APs) and EWC and probably one of the reasons Cisco has abandoned it on the latest models of APs.