Unsolved
This post is more than 5 years old
4 Posts
0
30288
June 20th, 2012 07:00
Redhat 6.3 hangs in shutdown with iscsi
Has anybody else updated redhat es to 6.3 version and experienced problems with iscsi. There is known issues with redhat 6.3 beta with multipathd and queue_without_daemon setting which causes the server to hang in shutdown. This can be fixed with settings change in /etc/multipath.conf. But if you use Equallogic HIT then there is no such file.
https://bugzilla.redhat.com/show_bug.cgi?id=662433
Any ideas how this could be fixed.
No Events found!
Bubbagump210
29 Posts
0
August 2nd, 2012 16:00
Same issue here. Do you have a link to this PDF? I found one regarding 5.x but is talks about multipath.conf and as the original thread starter mention, with HIT 1.1 on Red Hat, this doesn't exist.
Bubbagump210
29 Posts
0
August 3rd, 2012 09:00
Good to know. Ok, well... looks like I am rolling back to 6.2.
Bubbagump210
29 Posts
0
August 3rd, 2012 11:00
I think I got it: na6.salesforce.com/.../servlet.FileDownloadPkb
Bubbagump210
29 Posts
0
August 3rd, 2012 11:00
I get the same behavior in 6.2. If I log out of the LUNS manually using ehcmcli before reboot, things work fine. If I simply reboot, it hangs. So it is certainly getting hung up on the iSCSI logout. Now to see if I can find this legendary PDF.
Bubbagump210
29 Posts
0
August 3rd, 2012 12:00
Woot, that's got it. I just put in a simple multipath.conf as follows (Save some of you folks the digging hopefully):
#multipathd configuration
defaults {
user_friendly_names no
features “0”
no_path_retry fail
}
blacklist {
device {
product "100E-00"
vendor "EQLOGIC"
}
}
Also, one might have to do a
#chkconfig multipathd on
#service multipathd reload
Or just reboot the box if you can.
I also think some of the confusion is coming for the fact that you used to have to install dm-multipath as a separate package in older releases. Here, the module is there... you just have to create the the conf and enable/start the daemon. (Something else to include in 'eqltune'?)
Thanks!
Bubbagump210
29 Posts
0
August 3rd, 2012 12:00
This might be a good addition to 'eqltune fix'. Tweak the multipath.conf for these two parameters in addition to the black listing it already does.
Bubbagump210
29 Posts
0
August 3rd, 2012 12:00
Right, but in this case multipath gets in the way whether you want it to or not. I am starting from a minimal install of RHEL and the problem is there regardless as soon as you install the "Resilient Storage" group.... so for those of us using GFS2, we have to go through these hoops seemingly to get multipathd out of the way of the HIT.