"Use of uninitialized value in substitution iterator" caused by mpt-status error

[glensc]

"Use of uninitialized value in substitution iterator" caused by mpt-status error

[glensc]

please see CONTRIBUTING.md in the repository how to report bugs. need debug data from your system to fix.

[ebourg]

Ok, I ran ./check_raid.pl -d and got this:

DEBUG EXEC: /proc/mdstat at ./check_raid.pl line 449.
DEBUG EXEC: /sbin/MegaCli -PDList -aALL -NoLog at ./check_raid.pl line 449.
DEBUG EXEC: /sbin/MegaCli -LdInfo -Lall -aALL -NoLog at ./check_raid.pl line 449.
DEBUG EXEC: /sbin/mpt-status -p at ./check_raid.pl line 449.
ioctl: No such device
Use of uninitialized value in substitution iterator at ./check_raid.pl line 430.
DEBUG EXEC: /sbin/mpt-status -i  at ./check_raid.pl line 449.
ioctl: No such device
DEBUG EXEC: /sbin/tw_cli info at ./check_raid.pl line 449.
UNKNOWN: megacli:[Volumes(1): DISK0.0:Optimal; Devices(3): 05=Hotspare 06,07=Online]; mpt:[Plugin error]; tw_cli:[No Adapters were found on this machine]

Running /sbin/mpt-status -p gives:

Checking for SCSI ID:0
ioctl: No such device

Let me know if you need more details.

[glensc]

share the output of each of those commands please. CONTRIBUTING.md has the info how you could do that.

[glensc]

also, need to distinguish what mpt-status prints to stderr, what to stdout, and what is it's exit code:

# mpt-status -p 1>stdout 2>stderr; echo $?

show me above result outcome, and the contents of stdout and stderr files

[ebourg]

The other commands are unrelated to this warning, I get the same result with check_raid.pl -p mpt and it invokes only mpt-status.

For some reason mpt-status now returns another error message on my system, but check_raid still complains about the same uninitialized value.

Here are the outputs:

check_raid.pl -d -p mpt :

DEBUG EXEC: /sbin/mpt-status -p at ./check_raid.pl line 449.
open /dev/mptctl: No such file or directory
  Try: mknod /dev/mptctl c 10 220
Make sure mptctl is loaded into the kernel
Use of uninitialized value in substitution iterator at ./check_raid.pl line 430.
DEBUG EXEC: /sbin/mpt-status -i  at ./check_raid.pl line 449.
open /dev/mptctl: No such file or directory
  Try: mknod /dev/mptctl c 10 220
Make sure mptctl is loaded into the kernel
UNKNOWN: mpt:[Plugin error]

mpt-status -p :

open /dev/mptctl: No such file or directory
  Try: mknod /dev/mptctl c 10 220
Make sure mptctl is loaded into the kernel

and mpt-status -p 1>stdout 2>stderr; echo $? returns 1.

[glensc]

please post those two files (stdout and stderr) as i asked. need to distinguish of those. i can't differenciate from your post what stream the output goes.

[glensc]

also, check your lsmod output, especially mpt* modules

[ebourg]

stdout is empty and stderr contains:

open /dev/mptctl: No such file or directory
  Try: mknod /dev/mptctl c 10 220
Make sure mptctl is loaded into the kernel

lsmod doesn't show any mpt* module

[glensc]

do you even need mpt-status there? uninstall the program so it won't initialize mpt plugin

[ebourg]

No I don't need it, but I can't uninstall it either. It comes bundled with my distribution (Proxmox).

[glensc]

i see. you can workaround by specifying plugin(s) to use with -p

[ebourg]

Yes that's what I did. But still, if someone needs mpt-status and has an error, he will get an 'uninitialized value' message instead of a proper plugin failure with a meaningful message.

[glensc]

could you try this fix? it disables the plugin if mpt-status -p does not give any controller id out

[ebourg]

I no longer get the uninitialized warning with the commit 8e11af3, thank you Elan.