RT-86U - USB 2.0 port not mounting at boot.
- Thread starter miazza
- Start date
ColinTaylor
Part of the Furniture
Then it looks like you'll have to install it when you have a working Entware setup.
ColinTaylor
Part of the Furniture
From memory....
Then verify that it is working by issuing this command:
Assuming that works you need to setup the data collection. You need to add these two lines to one of your existing startup scripts. I suggest that you find out which script is starting Entware (rc.unslung start) and then add them just after that.
N.B. You do see the irony of installing diagnostic tools onto the device that is failing.
EDIT: Entware's sa2 command is currently broken so the cru entry for 23:59 does nothing. Even if you fix the sa2 script you might want to remove that cru command anyway as by default it deletes data files more than 8 days old.
Code:
# opkg install sysstat
# /opt/etc/init.d/S99sysstat start
Code:
# sar -d 2 5
Code:
cru a sa1 "*/10 * * * * /opt/lib/sysstat/sa1 600 1 -S DISK"
cru a sa2 "59 23 * * * /opt/lib/sysstat/sa2 -A"N.B. You do see the irony of installing diagnostic tools onto the device that is failing.
EDIT: Entware's sa2 command is currently broken so the cru entry for 23:59 does nothing. Even if you fix the sa2 script you might want to remove that cru command anyway as by default it deletes data files more than 8 days old.
Last edited:
Well rats. This has now happened again to me. This is the third time in six months. My 86U seems to have rebooted itself two days ago and the thumb drive didn't mount. When next I travel from this safe country with universal health care to the septic swamp 4000 miles away where this router is, I'll troubleshoot. Fortunately the OpenVPN comes up fine.
I feel confident, as before, that unplugging and replugging the thumb drive will cure all.
I feel confident, as before, that unplugging and replugging the thumb drive will cure all.
Very similar behaviour. In my case unplugging and replugging the drive did not cure and the key was not anymore usable.
Now I have installed sysstat and hopefully with the help of sar we can start and debug my issue.
I still need to set cron for data collection but right now I have not yet seen anything strange.
Now I have installed sysstat and hopefully with the help of sar we can start and debug my issue.
I still need to set cron for data collection but right now I have not yet seen anything strange.
Code:
ASUSWRT-Merlin RT-AC86U 384.17_0 Sun Apr 26 02:28:53 UTC 2020
miazza@RT-AC86U-3150:/tmp/home/root# sar -d 2 5
Linux 4.1.27 (RT-AC86U-3150) 06/17/20 _aarch64_ (2 CPU)
15:12:25 DEV tps rkB/s wkB/s dkB/s areq-sz aqu-sz await %util
15:12:27 dev8-0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
15:12:27 dev8-16 0.50 0.00 29.70 0.00 60.00 0.21 430.00 21.29
15:12:27 DEV tps rkB/s wkB/s dkB/s areq-sz aqu-sz await %util
15:12:29 dev8-0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
15:12:29 dev8-16 1.00 0.00 11.94 0.00 12.00 0.00 5.00 0.50
15:12:29 DEV tps rkB/s wkB/s dkB/s areq-sz aqu-sz await %util
15:12:31 dev8-0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
15:12:31 dev8-16 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
15:12:31 DEV tps rkB/s wkB/s dkB/s areq-sz aqu-sz await %util
15:12:33 dev8-0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
15:12:33 dev8-16 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
15:12:33 DEV tps rkB/s wkB/s dkB/s areq-sz aqu-sz await %util
15:12:35 dev8-0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
15:12:35 dev8-16 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average: DEV tps rkB/s wkB/s dkB/s areq-sz aqu-sz await %util
Average: dev8-0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average: dev8-16 0.30 0.00 8.34 0.00 28.00 0.04 146.67 4.37it seems sdb is very often accessed.
Code:
miazza@RT-AC86U-3150:/tmp/home/root# iostat -y 5 sdb
Linux 4.1.27 (RT-AC86U-3150) 06/18/20 _aarch64_ (2 CPU)
avg-cpu: %user %nice %system %iowait %steal %idle
35.46 0.00 39.51 0.12 0.00 24.91
Device tps kB_read/s kB_wrtn/s kB_dscd/s kB_read kB_wrtn kB_dscd
sdb 0.40 0.00 3.18 0.00 0 16 0
avg-cpu: %user %nice %system %iowait %steal %idle
37.83 0.00 38.58 0.12 0.00 23.47
Device tps kB_read/s kB_wrtn/s kB_dscd/s kB_read kB_wrtn kB_dscd
sdb 0.40 0.00 3.98 0.00 0 20 0
avg-cpu: %user %nice %system %iowait %steal %idle
38.24 0.00 40.28 0.00 0.00 21.48
Device tps kB_read/s kB_wrtn/s kB_dscd/s kB_read kB_wrtn kB_dscd
sdb 0.60 0.00 4.78 0.00 0 24 0
avg-cpu: %user %nice %system %iowait %steal %idle
40.00 0.00 38.53 0.12 0.00 21.35
Device tps kB_read/s kB_wrtn/s kB_dscd/s kB_read kB_wrtn kB_dscd
sdb 0.40 0.00 5.58 0.00 0 28 0
avg-cpu: %user %nice %system %iowait %steal %idle
38.91 0.00 44.83 0.00 0.00 16.26
Device tps kB_read/s kB_wrtn/s kB_dscd/s kB_read kB_wrtn kB_dscd
sdb 0.40 0.00 3.98 0.00 0 20 0
avg-cpu: %user %nice %system %iowait %steal %idle
36.56 0.00 43.25 0.00 0.00 20.19
Device tps kB_read/s kB_wrtn/s kB_dscd/s kB_read kB_wrtn kB_dscd
sdb 0.99 0.00 5.57 0.00 0 28 0
avg-cpu: %user %nice %system %iowait %steal %idle
35.79 0.00 41.40 0.12 0.00 22.69
Device tps kB_read/s kB_wrtn/s kB_dscd/s kB_read kB_wrtn kB_dscd
sdb 0.40 0.00 3.98 0.00 0 20 0
avg-cpu: %user %nice %system %iowait %steal %idle
33.97 0.00 45.62 0.12 0.00 20.29
Device tps kB_read/s kB_wrtn/s kB_dscd/s kB_read kB_wrtn kB_dscd
sdb 0.40 0.00 3.98 0.00 0 20 0
avg-cpu: %user %nice %system %iowait %steal %idle
41.68 0.00 36.67 0.00 0.00 21.65
Device tps kB_read/s kB_wrtn/s kB_dscd/s kB_read kB_wrtn kB_dscd
sdb 0.40 0.00 3.19 0.00 0 16 0
avg-cpu: %user %nice %system %iowait %steal %idle
33.25 0.00 42.62 0.00 0.00 24.13
Device tps kB_read/s kB_wrtn/s kB_dscd/s kB_read kB_wrtn kB_dscd
sdb 0.40 0.00 3.19 0.00 0 16 0
avg-cpu: %user %nice %system %iowait %steal %idle
37.81 0.00 47.35 0.12 0.00 14.72
Device tps kB_read/s kB_wrtn/s kB_dscd/s kB_read kB_wrtn kB_dscd
sdb 0.60 0.00 7.17 0.00 0 36 0
avg-cpu: %user %nice %system %iowait %steal %idle
34.39 0.00 43.86 0.00 0.00 21.75
Device tps kB_read/s kB_wrtn/s kB_dscd/s kB_read kB_wrtn kB_dscd
sdb 0.40 0.00 3.98 0.00 0 20 0
avg-cpu: %user %nice %system %iowait %steal %idle
38.28 0.00 41.27 0.00 0.00 20.45
Device tps kB_read/s kB_wrtn/s kB_dscd/s kB_read kB_wrtn kB_dscd
sdb 1.00 0.00 6.37 0.00 0 32 0
avg-cpu: %user %nice %system %iowait %steal %idle
38.17 0.00 40.12 0.12 0.00 21.59
Device tps kB_read/s kB_wrtn/s kB_dscd/s kB_read kB_wrtn kB_dscd
sdb 0.40 0.00 3.98 0.00 0 20 0
avg-cpu: %user %nice %system %iowait %steal %idle
39.06 0.00 42.81 0.12 0.00 18.02
Device tps kB_read/s kB_wrtn/s kB_dscd/s kB_read kB_wrtn kB_dscd
sdb 0.40 0.00 3.98 0.00 0 20 0
avg-cpu: %user %nice %system %iowait %steal %idle
37.70 0.00 37.82 0.12 0.00 24.35
Device tps kB_read/s kB_wrtn/s kB_dscd/s kB_read kB_wrtn kB_dscd
sdb 0.40 0.00 3.98 0.00 0 20 0
avg-cpu: %user %nice %system %iowait %steal %idle
39.66 0.00 44.72 0.00 0.00 15.62
Device tps kB_read/s kB_wrtn/s kB_dscd/s kB_read kB_wrtn kB_dscd
sdb 0.80 0.00 6.36 0.00 0 32 0ColinTaylor
Part of the Furniture
There seems to be constant writing to sdb although the volume is quite small. I'd guess that's a log file from some add-on script. sar -d is more informative because it gives you information about queue size, wait time and utilisation. But you really need to setup data collection so that you can view its behaviour over 24 hours or more because that disk activity wasn't present in your previous post.
Your CPU usage is also constantly between 75% and 85% so you might want to look at that also.
Your CPU usage is also constantly between 75% and 85% so you might want to look at that also.
I think I need some assistance for this.
BTW now after reboot this I have 98% cpu idle and less writing on sdb.
Code:
miazza@RT-AC86U-3150:/tmp/mnt/Entware/entware/etc/init.d# ls
S80pixelserv-tls rc.func rc.unslung
S99sysstat rc.func.div
Last edited:
ColinTaylor
Part of the Furniture
You'll have to find the script that starts Entware. I can't tell you where that is because my setup is non-standard. Look in files like /jffs/scripts/post-mount. You're looking for this line:
Maybe @thelonelycoder will tell us what script Entware is started from.
Once you have found the script you need to add two cru statement immediately after that line so that section now looks like this:
Reboot the router and confirm that it has worked by looking for those two lines in the output of "cru l".
EDIT: Entware's sa2 command is currently broken so the cru entry for 23:59 does nothing. Even if you fix the sa2 script you might want to remove that cru command anyway as by default it deletes data files more than 8 days old.
Code:
/opt/etc/init.d/rc.unslung startOnce you have found the script you need to add two cru statement immediately after that line so that section now looks like this:
Code:
/opt/etc/init.d/rc.unslung start
cru a sa1 "*/10 * * * * /opt/lib/sysstat/sa1 600 1 -S DISK"
cru a sa2 "59 23 * * * /opt/lib/sysstat/sa2 -A"Reboot the router and confirm that it has worked by looking for those two lines in the output of "cru l".
Code:
# cru l
< various other stuff here >
*/10 * * * * /opt/lib/sysstat/sa1 600 1 -S DISK #sa1#
59 23 * * * /opt/lib/sysstat/sa2 -A #sa2#
Last edited:
ColinTaylor
Part of the Furniture
Thanks. That is significantly different than my setup.
What script would you use if you didn't have Diversion installed I wonder. Maybe someone with a "normal" setup can suggest a better place to add those cru lines so they get executed after Entware is initialised.
This is what I have with /jffs/addons/diversion/mount-entware.div
Where is the right point where to add cru ?
Code:
#!/bin/sh
#bof
# Diversion is free to use under the GNU General Public License version 3 (GPL- >
# https://opensource.org/licenses/GPL-3.0
# Proudly coded by thelonelycoder
# Copyright (c) 2016-2066 thelonelycoder - All Rights Reserved
# https://www.snbforums.com/members/thelonelycoder.25480/
# https://diversion.ch
# Script Version 4.1.12
mount_entware(){
if [ -f "${opkgFile%/opkg}/diversion" ]; then
logger -t Diversion "Starting Entware and Diversion services on >
ln -nsf "${opkgFile%/bin/opkg}" /tmp/opt
/opt/etc/init.d/rc.unslung start $0
service restart_dnsmasq
sh /opt/share/diversion/file/ash-history.div
else
logger -t Entware "Starting Entware services, Diversion not fou >
ln -nsf "${opkgFile%/bin/opkg}" /tmp/opt
/opt/etc/init.d/rc.unslung start $0
fi
}
opkgFile=$(/usr/bin/find $1/entware/bin/opkg 2> /dev/null)
if [ "$opkgFile" ] && [ ! -d /opt/bin ]; then
mount_entware $1
elif [ "$opkgFile" ] && [ -d /opt/bin ]; then
logger -t Diversion "Not starting Entware services on $1, Entware is al >
else
opkgUnknown=$(/usr/bin/find $1/entware*/bin/opkg 2> /dev/null)
if [ "$opkgUnknown" ]; then
mv "${opkgUnknown%/bin/opkg}" "${opkgUnknown%/entware*/bin/opkg >
logger -t Diversion "(Alert) Entware folder ${opkgUnknown%/bin/ >
opkgFile=$(/usr/bin/find $1/entware/bin/opkg 2> /dev/null)
mount_entware $1
else
logger -t Diversion "(Notice) $1 does not contain Entware, skip >
fi
fi
#eofWhere is the right point where to add cru ?
ColinTaylor
Part of the Furniture
Given that this script is dependent on Diversion and any changes to it are likely to be overwritten if Diversion is updated or reinstalled I suggest a different approach. Just add the cru lines to the end of your existing /jffs/scripts/services-start script.
Yes, I was just going to suggest that. Alternatively, it could be added to post-mount right after the line that calls mount-entware; here's mine:
Code:
#!/bin/sh
swapon /tmp/mnt/Cruzer/myswap.swp # Skynet
rm -f /tmp/mnt/Cruzer/entware/var/log/messages
cru a tls-report "59 23 * * * /jffs/scripts/tls-alert.sh" # added by tlsupdate-installer
cru a logrotate "5 0 * * * /opt/sbin/logrotate /opt/etc/logrotate.conf >> /opt/tmp/logrotate.daily 2>&1" # added by scribe
. /jffs/addons/diversion/mount-entware.div # Added by Diversion
/jffs/addons/unbound/unbound_stats.sh startup # Unbound_Stats.shColinTaylor
Part of the Furniture
Thanks. That's what I was looking for in post #51. Yes near the end of post-mount would be best in that case.
So you mean in post-mount like this:
Code:
#!/bin/sh
swapon /tmp/mnt/Entware/myswap.swp # Added by amtm
. /jffs/addons/diversion/mount-entware.div # Added by Diversion
cru a sa1 "*/10 * * * * /opt/lib/sysstat/sa1 600 1 -S DISK"
cru a sa2 "59 23 * * * /opt/lib/sysstat/sa2 -A"ColinTaylor
Part of the Furniture
OK.
It seems cron is now set correctly.
I suppose now I have to let this run for 24h and ... what's next ? I mean where do I see the collected data now ?
It seems cron is now set correctly.
Code:
ASUSWRT-Merlin RT-AC86U 384.17_0 Sun Apr 26 02:28:53 UTC 2020
miazza@RT-AC86U-3150:/tmp/home/root# cru l
*/2 * * * * /etc/openvpn/server1/vpns-watchdog1.sh #CheckVPNServer1#
*/2 * * * * /etc/openvpn/server2/vpns-watchdog2.sh #CheckVPNServer2#
00 2 * * Mon sh /opt/share/diversion/file/update-bl.div reset #Diversion_UpdateBL#
20 5 * * * sh /opt/share/diversion/file/rotate-logs.div #Diversion_RotateLogs#
20 17 * * * diversion count_ads count #Diversion_CountAds#
* * * * * sh /opt/share/diversion/file/yt-blocking.div #Diversion_YTblocking#
*/10 * * * * /opt/lib/sysstat/sa1 600 1 -S DISK #sa1#
59 23 * * * /opt/lib/sysstat/sa2 -A #sa2#
37 7 */7 * * service restart_letsencrypt #LetsEncrypt#I suppose now I have to let this run for 24h and ... what's next ? I mean where do I see the collected data now ?
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