[SOLVED] webGUI not accessible - Segmentation Fault

I have been having issues with the 5.0b14 webGUI.  When I restarted my system, the GUI was not accessible.  On the terminal I have on the server, I had a series of errors like this:

PHP Notice:  Undefined index:  Icon in user/local/emhttp/plugins/webGUI/template.php on line 128

all there PHP Notice pointing at the template.php file, not only icon, but Title, etc. as well as different lines in the template.php file

I tried to restart the webGUI - see command line below:

root@HAL_9000:/# killall emhttp

root@HAL_9000:/# nohup /user/local/sbin/emhttp &

[1] 8014

root@HAL_9000:/# nohup: ignoring input and appending output to `nohup.out'

nohup: failed to run command `/user/local/sbin/emhttp': No such file or directory

[1]+  Exit 127                nohup /user/local/sbin/emhttp

root@HAL_9000:/#

Syslog log below

root@HAL_9000:~# tail -f /var/log/syslog   

Apr 14 11:27:25 HAL_9000 unmenu-status: Starting unmenu web-server

Apr 14 11:28:23 HAL_9000 emhttp: unRAID System Management Utility version 5.0-beta14

Apr 14 11:28:23 HAL_9000 emhttp: Copyright © 2005-2011, Lime Technology, LLC

Apr 14 11:28:23 HAL_9000 emhttp: Pro key detected, GUID:xxxx

Apr 14 11:28:23 HAL_9000 emhttp: rdevName.22 not found

Apr 14 11:28:23 HAL_9000 emhttp: diskFsStatus.1 not found

Apr 14 11:28:23 HAL_9000 kernel: emhttp[5680]: segfault at 0 ip b754f760 sp bfb21270 error 4 in libc-2.11.1.so[b74d6000+15c000]

Apr 14 11:31:53 HAL_9000 in.telnetd[6237]: connect from 192.168.11.10 (192.168.11.10)

Apr 14 11:31:54 HAL_9000 login[6238]: invalid password for 'UNKNOWN'  on '/dev/pts/1' from '192.168.11.10'

Apr 14 11:31:56 HAL_9000 login[6238]: ROOT LOGIN  on '/dev/pts/1' from '192.168.11.10'

Apr 14 11:45:05 HAL_9000 login[3728]: ROOT LOGIN  on '/dev/tty1'

Apr 14 11:45:52 HAL_9000 unmenu-status: Starting unmenu web-server

Apr 14 11:46:48 HAL_9000 emhttp: unRAID System Management Utility version 5.0-beta14

Apr 14 11:46:48 HAL_9000 emhttp: Copyright © 2005-2011, Lime Technology, LLC

Apr 14 11:46:48 HAL_9000 emhttp: Pro key detected, GUID:

Apr 14 11:46:48 HAL_9000 emhttp: rdevName.22 not found

Apr 14 11:46:48 HAL_9000 emhttp: diskFsStatus.1 not found

Apr 14 11:46:48 HAL_9000 kernel: emhttp[8234]: segfault at 0 ip b764a760 sp bfa82ba0 error 4 in libc-2.11.1.so[b75d1000+15c000]

attached s the full syslog.  Aside from restarting, which has not seemed to help, any advice?

syslog-2012-04-14-2.txt

Run check disk on the Flash in a PC or Mac.

Did that, had some orphaned clusters - repairs.  GUI works OK, but seems a bit intermittent.  Still getting the same series of messages on my terminal even though the GUI is working. 

Is there a way to reload the code for it?

Backup the flash. Then format and reinstall. Copy the key file from the backup.

You have /user/local/sbin/emhttp vs. /usr/local/sbin/emhttp - that's at least why you get the error..

Yes, it that case I posted, I did type the wrong directory.  But even drilling into the directory, I still get a Segmentation fault.

root@HAL_9000:/usr/local/sbin# emhttp

Segmentation fault

root@HAL_9000:/usr/local/sbin#

Now - here is a very stupid question, as I have no Linux experience.  Were does the /usr directory live?  Is it on a disk or in virtual memory.  Seems I could just recopy the file if it lived in on a physical disk.  (Guess I will have to reformat the flash).

I have reformatted my USB, started clean with a 5.0b14 - still the same issue;  The webGUI hangs, and then I can not get it back. 

Again, I ran the following to restart:

root@HAL_9000:~# killall emhttp

root@HAL_9000:~# nohup /usr/local/sbin/emhttp &

[1] 6930

root@HAL_9000:~# nohup: ignoring input and appending output to `nohup.out'

[1]+  Segmentation fault      nohup /usr/local/sbin/emhttp

root@HAL_9000:~#

A bit of the syslog

Apr 20 19:24:44 HAL_9000 unmenu-status: Starting unmenu web-server

Apr 20 19:25:11 HAL_9000 vsftpd[6291]: connect from 192.168.11.1 (192.168.11.1) (Routine)

Apr 20 19:27:07 HAL_9000 emhttp: unRAID System Management Utility version 5.0-beta14 (Lime Tech)

Apr 20 19:27:07 HAL_9000 emhttp: Copyright © 2005-2011, Lime Technology, LLC (Lime Tech)

Apr 20 19:27:07 HAL_9000 emhttp: Pro key detected, GUID: 054C-05B8-2211-108174003136 (Other emhttp)

Apr 20 19:27:07 HAL_9000 emhttp: get_config_idx: fopen /boot/config/flash.cfg: No such file or directory - assigning defaults (Other emhttp)

Apr 20 19:27:07 HAL_9000 emhttp: rdevName.22 not found (Other emhttp)

Apr 20 19:27:07 HAL_9000 emhttp: diskFsStatus.1 not found (Other emhttp)

Apr 20 19:27:07 HAL_9000 kernel: emhttp[6861]: segfault at 0 ip b748a760 sp bf9fde40 error 4 in libc-2.11.1.so[b7411000+15c000] (Errors)

Apr 20 19:28:55 HAL_9000 vsftpd[6928]: connect from 192.168.11.1 (192.168.11.1) (Routine)

Apr 20 19:28:55 HAL_9000 emhttp: unRAID System Management Utility version 5.0-beta14 (Lime Tech)

Apr 20 19:28:55 HAL_9000 emhttp: Copyright © 2005-2011, Lime Technology, LLC (Lime Tech)

Apr 20 19:28:55 HAL_9000 emhttp: Pro key detected, GUID: 054C-05B8-2211-108174003136 (Other emhttp)

Apr 20 19:28:55 HAL_9000 emhttp: get_config_idx: fopen /boot/config/flash.cfg: No such file or directory - assigning defaults (Other emhttp)

Apr 20 19:28:55 HAL_9000 emhttp: rdevName.22 not found (Other emhttp)

Apr 20 19:28:55 HAL_9000 emhttp: diskFsStatus.1 not found (Other emhttp)

Apr 20 19:28:55 HAL_9000 kernel: emhttp[6930]: segfault at 0 ip b74a1760 sp bfcf88b0 error 4 in libc-2.11.1.so[b7428000+15c000] (Errors)

Apr 20 19:29:51 HAL_9000 vsftpd[6942]: connect from 192.168.11.1 (192.168.11.1) (Routine)

The menu is stopped, but will not restart.

Any other ideas??

Thanks,

syslog-2012-04-20.txt.zip

Just took a quick scan of your syslog.  There's a few lines of possible concern:

Apr 20 19:09:06 HAL_9000 kernel: read_file: error 2 opening /boot/config/super.dat
Apr 20 19:09:06 HAL_9000 kernel: md: could not read superblock from /boot/config/super.dat
Apr 20 19:09:06 HAL_9000 kernel: md: initializing superblock

Do these lines persist through restarts?  Although I would definitely defer to a more knowledgeable unRAIDer (like Joe L. or other forum admin), I would say take a look at the following forum post (dealing with 5.0b2, but probably still applicable...)

http://lime-technology.com/forum/index.php?topic=9438.0

...  Note that I have NOT addressed any issue with webGui appearing to "hang" - if you let it sit long enough, it seems to come back.  I realize this is not ideal and will address in rc3.  For now I want to know if LSI chipset issues are solved and Realtek NIC's still work    If so, I'll release as "official" -rc2, and then work on the webGui issues.

Since I have adopted patience and waited for the GUI to come back rather then reloading, I have had no issues.  From Tom's comment in the 5.0rc1 thread above, GUI performance is a known issue.  Will continue using 5.0b14 until rc2 or later are released.

I will mark as resolved for the moderators.

Lesson learned:  Have patience, good things come to those who wait!

SH

Against better judgement, I restarted emhttp < inaccessible during a parity check> and got the same seg faults, corresponding syslog errors. Scared the crap out of me when I saw the entries.  Anyways, a reboot got me back up and running - and I won't command line a

emhttp restart again.