Crontab jobs disappeared.

[dave14305]

I ran it from last night till now. Did "grep -a cru messages > cru1.txt". There was an auto-restart at 4:05am today. See the log.

Thanks. Here’s an example where the locking prevented concurrent updates (the cru PID directly above “Acquired cru lock” is different from its own):

Mar  8 04:07:04 RT-AC86U-9988 cru[9281]: Action: a, JobID: clearcache, Args: a clearcache 50 03 * * * /jffs/scripts/clearcache  2>&1 | /usr/bin/logger -t clearcache
Mar  8 04:07:04 RT-AC86U-9988 cru[9281]: Calling PID: 8413, CMD: /bin/sh /jffs/scripts/post-mount /tmp/mnt/spare
Mar  8 04:07:04 RT-AC86U-9988 cru[9281]: Acquired cru lock
Mar  8 04:07:04 RT-AC86U-9988 cru[9322]: Action: a, JobID: connmon, Args: a connmon */12 * * * * /jffs/scripts/connmon generate
Mar  8 04:07:04 RT-AC86U-9988 cru[9322]: Calling PID: 6062, CMD: /bin/sh /jffs/scripts/connmon startup /tmp/mnt/ac86u
Mar  8 04:07:05 RT-AC86U-9988 cru[9281]: Jobs before: 21, after: 21
Mar  8 04:07:05 RT-AC86U-9988 cru[9322]: Acquired cru lock
Mar  8 04:07:05 RT-AC86U-9988 cru[9410]: Action: a, JobID: temp, Args: a temp */15 * * * * /jffs/scripts/temp_check  2>&1 | tr -d '\n' | /usr/bin/logger -t Temp
Mar  8 04:07:05 RT-AC86U-9988 cru[9410]: Calling PID: 8413, CMD: /bin/sh /jffs/scripts/post-mount /tmp/mnt/spare
Mar  8 04:07:05 RT-AC86U-9988 cru[9322]: Jobs before: 21, after: 22
Mar  8 04:07:05 RT-AC86U-9988 cru[9410]: Acquired cru lock
Mar  8 04:07:05 RT-AC86U-9988 cru[9410]: Jobs before: 22, after: 22

 

[dave14305]

In my case the count is already 5 before logging starts.

Please update the script again to pick up a fix to make the calling PID parameters more readable. Thx!

 

[Ripshod]

Please update the script again to pick up a fix to make the calling PID parameters more readable. Thx!

With the updated script:

 

[alan6854321]

Well, my AX86S died good & proper.
So - now I'm the proud owner of an AX88U_Pro.
All setup and running remarkably easily.

But I noticed a new cru 'thing' in the logs - when the WAN comes up, something tries to deleted a 'Wireguard' cronjob.
I didn't realize I was running Wireguard. Am I running Wireguard?

10-Mar 07:54:44 AX custom_script: Running /jffs/scripts/wan-event (args: 0 connected)
10-Mar 07:54:44 AX custom_script: Running /jffs/scripts/firewall-start (args: eth0)
10-Mar 07:54:44 AX wan: finish adding multi routes
10-Mar 07:54:44 AX cru[2983]: Action: d, JobID: WireGuard, Args: d WireGuard
10-Mar 07:54:44 AX cru[2983]: Calling PID: 2915, CMD: /tmp/udhcpc_wan bound
10-Mar 07:54:44 AX cru[2983]: Acquired cru lock
10-Mar 07:54:44 AX cru[2983]: Jobs before: 4, after: 4
10-Mar 07:54:44 AX ddns: IP address, server and hostname have not changed since the last update.

 

[Ripshod]

That must be normal as I see it on my RT-AX88U. I never noticed it until I seen you mention it. The reason? Probably to make sure wireguard is in a good known state. I saw Dave posted made a Commit on github.
[/presumption]

 

[bibikalka]

The cru replacement in post #79 has been updated with locking. Follow the instructions there:

Crontab jobs disappeared.

It's almost like it's inserting a folder listing in the middle of the cru statement The "*" are being globbed. It looks like the script isn't putting the required quotes around "00 2 * * Fri" for Diversion_UpdateBL, for example. @thelonelycoder ?

www.snbforums.com

Has been running this for a week now - appears working very nicely. All BACKUPMON jobs now occur as scheduled (@Viktor Jaep). For a while I had the backup job in services-start run only every other time or similar

cru a RunBackupMon "46 14 * * * sh /jffs/scripts/backupmon.sh"

,
while the same job in post-mount was more reliable

cru a RunBackupMon0 "28 4 * * * sh /jffs/scripts/backupmon.sh"

But now the job from services-start works all the time (see present or missing 14:46 file timestamp below):

admin@RT-AC86U-9988:/# ls -lta /tmp/mnt/spare/router/AC86U-Backup/*/jffs*
-rw-rw-rw-    1 admin    root       4606370 Mar 14 14:46 /tmp/mnt/spare/router/AC86U-Backup/14/jffs.tar.gz
-rw-rw-rw-    1 admin    root       4581337 Mar 13 14:46 /tmp/mnt/spare/router/AC86U-Backup/13/jffs.tar.gz
-rw-rw-rw-    1 admin    root       4577759 Mar 12 14:46 /tmp/mnt/spare/router/AC86U-Backup/12/jffs.tar.gz
-rw-rw-rw-    1 admin    root       4573016 Mar 11 14:46 /tmp/mnt/spare/router/AC86U-Backup/11/jffs.tar.gz
-rw-rw-rw-    1 admin    root       4582976 Mar 10 14:46 /tmp/mnt/spare/router/AC86U-Backup/10/jffs.tar.gz
-rw-rw-rw-    1 admin    root       4571448 Mar  9 14:46 /tmp/mnt/spare/router/AC86U-Backup/09/jffs.tar.gz
-rw-rw-rw-    1 admin    root       4548601 Mar  8 14:46 /tmp/mnt/spare/router/AC86U-Backup/08/jffs.tar.gz
-rw-rw-rw-    1 admin    root       4413900 Mar  7 04:28 /tmp/mnt/spare/router/AC86U-Backup/07/jffs.tar.gz
-rw-rw-rw-    1 admin    root       4542100 Mar  6 14:46 /tmp/mnt/spare/router/AC86U-Backup/06/jffs.tar.gz
-rw-rw-rw-    1 admin    root       4380330 Mar  5 04:28 /tmp/mnt/spare/router/AC86U-Backup/05/jffs.tar.gz
-rw-rw-rw-    1 admin    root       4365080 Mar  4 04:28 /tmp/mnt/spare/router/AC86U-Backup/04/jffs.tar.gz
-rw-rw-rw-    1 admin    root       4360129 Mar  3 04:28 /tmp/mnt/spare/router/AC86U-Backup/03/jffs.tar.gz
-rw-rw-rw-    1 admin    root       4472957 Mar  2 14:46 /tmp/mnt/spare/router/AC86U-Backup/02/jffs.tar.gz
-rw-rw-rw-    1 admin    root       4485265 Mar  1 14:46 /tmp/mnt/spare/router/AC86U-Backup/01/jffs.tar.gz
-rw-rw-rw-    1 admin    root       4624396 Feb 29 04:28 /tmp/mnt/spare/router/AC86U-Backup/29/jffs.tar.gz
-rw-rw-rw-    1 admin    root       4610237 Feb 28 04:28 /tmp/mnt/spare/router/AC86U-Backup/28/jffs.tar.gz
-rw-rw-rw-    1 admin    root       4576974 Feb 27 04:28 /tmp/mnt/spare/router/AC86U-Backup/27/jffs.tar.gz
-rw-rw-rw-    1 admin    root       4580845 Feb 26 04:28 /tmp/mnt/spare/router/AC86U-Backup/26/jffs.tar.gz
-rw-rw-rw-    1 admin    root       4585391 Feb 25 04:28 /tmp/mnt/spare/router/AC86U-Backup/25/jffs.tar.gz
-rw-rw-rw-    1 admin    root       4604815 Feb 24 04:28 /tmp/mnt/spare/router/AC86U-Backup/24/jffs.tar.gz
-rw-rw-rw-    1 admin    root       4695879 Feb 23 14:46 /tmp/mnt/spare/router/AC86U-Backup/23/jffs.tar.gz
-rw-rw-rw-    1 admin    root       4576976 Feb 22 04:30 /tmp/mnt/spare/router/AC86U-Backup/22/jffs.tar.gz
-rw-rw-rw-    1 admin    root       4730094 Feb 21 14:46 /tmp/mnt/spare/router/AC86U-Backup/21/jffs.tar.gz
-rw-rw-rw-    1 admin    root       4612622 Feb 20 04:28 /tmp/mnt/spare/router/AC86U-Backup/20/jffs.tar.gz
-rw-rw-rw-    1 admin    root       4593213 Feb 19 04:28 /tmp/mnt/spare/router/AC86U-Backup/19/jffs.tar.gz
-rw-rw-rw-    1 admin    root       4622219 Feb 17 04:28 /tmp/mnt/spare/router/AC86U-Backup/17/jffs.tar.gz
-rw-rw-rw-    1 admin    root       4561403 Feb 16 04:28 /tmp/mnt/spare/router/AC86U-Backup/16/jffs.tar.gz
-rw-rw-rw-    1 admin    root       4703573 Feb 15 14:46 /tmp/mnt/spare/router/AC86U-Backup/15/jffs.tar.gz

 

[dave14305]

Has been running this for a week now - appears working very nicely.

Great news! The updated cru with better locking (but no logging) will be in 386.13 and 388.7.

 

[RMerlin]

The change was also picked by Tomato.

 

[alan6854321]

Do we think that the problem has been found and fixed then?

 

[Ripshod]

Do we think that the problem has been found and fixed then?

Certainly seems so. Haven't had any more mystery disappearances since I updated to the latest cru script.

 

[Jeffrey Young]

Great news! The updated cru with better locking (but no logging) will be in 386.13 and 388.7.

Fair to say @dave14305 , you have left your mark. Great job - as always.

 

[ZebMcKayhan]

Really glad to see this long standing issue hopefully finally resolved!

Great work everyone!

 

[Viktor Jaep]

And I'm really glad to know it wasn't me, or some other developer that was pumping out shoddy code that was clearing out the cru jobs.

 

[alan6854321]

Hi there,

I just loaded up the new 3004.388.7_beta1
I first removed the 'mount' command in init-start that overwrites /usr/sbin/cru
I see the new /usr/sbin/cru now has the 'flock' commands in it.
Is that all OK now?

 

[Ripshod]

Hi there,

I just loaded up the new 3004.388.7_beta1
I first removed the 'mount' command in init-start that overwrites /usr/sbin/cru
I see the new /usr/sbin/cru now has the 'flock' commands in it.
Is that all OK now?

Yes, it's all sorted now - normal service has been resumed (since the first alpha).

 

[alan6854321]

Yes, it's all sorted now - normal service has been resumed (since the first alpha).

I notice it no longer writes to syslog when it adds/deletes jobs
Is that the intention?

 

[Jeffrey Young]

I notice it no longer writes to syslog when it adds/deletes jobs
Is that the intention?

Correct, Merlin did not add the logging. It's in the changelog