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emhttp segfault

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If I try and select 6 as the disk limit before starting my array emhttp crashes and refuses to reload even when trying to manaully run it from the command line using nohup /usr/local/sbin/emhttp &

 

root@Tower:~# tail -10 /var/log/syslog
Mar 24 03:58:27 Tower kernel: md: import disk4: [8,96] (sdg) WDC_WD40EFRX-68WT0N0_WD-WCC4E6HFDN53 size: 3907018532
Mar 24 03:58:27 Tower emhttp: Error: cache: SanDisk_SDSSDHP128G_132033402829 already assigned
Mar 24 03:58:27 Tower emhttp: import 6 cache device: no device
Mar 24 03:58:27 Tower kernel: mdcmd (6): import 5 8,64 125034808 SanDisk_SDSSDHP128G_132033402829
Mar 24 03:58:27 Tower kernel: md: import disk5: [8,64] (sde) SanDisk_SDSSDHP128G_132033402829 size: 125034808
Mar 24 03:58:27 Tower kernel: md: disk5 new disk
Mar 24 03:58:27 Tower emhttp: import flash device: sda
Mar 24 03:58:27 Tower emhttp: rdevLastIO.5 not found
Mar 24 03:58:27 Tower kernel: emhttp[12250]: segfault at 0 ip 00002b8ac5fbd527 sp 00007ffcbfe7b230 error 4 in libc-2.17.so[2b8ac5f82000+1bf000]

 

I'm running UNRAID 6.1.9

 

I found a thread similar to my issue but it's from 2012 about the old version so I'm not too sure if it's related.

  • Community Expert

If I try and select 6 as the disk limit before starting my array emhttp crashes and refuses to reload even when trying to manaully run it from the command line using nohup /usr/local/sbin/emhttp &

The emhttp process cannot be restarted (and has not been since v5) - getting a segfault is expectred behaviour if you try.

  • Author

That's a weird design, is you're expected to restart the whole server if the Web Gui goes down?

 

Also I get the segfault BEFORE trying to restart, that's what causes it to crash.

  • Community Expert
I would not say it was a common issue - just that there have been some other similar reports!

 

The fix normally seems to use a different browser.  It appears Chrome in particular is likely to upset the GUI - although I have no idea why.

  • Author

I've found thread after thread of this so it's at least not an isolated incident and seems to go back as far as v4 of the web ui.

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