Gentoo Forums
Gentoo Forums
Gentoo Forums
Quick Search: in
Machine hangs on S3 resume only with raid10 array active. ?
View unanswered posts
View posts from last 24 hours

 
Reply to topic    Gentoo Forums Forum Index Kernel & Hardware
View previous topic :: View next topic  
Author Message
john.newman
Tux's lil' helper
Tux's lil' helper


Joined: 17 Oct 2009
Posts: 80

PostPosted: Thu Nov 21, 2013 2:00 am    Post subject: Machine hangs on S3 resume only with raid10 array active. ? Reply with quote

Hello all,

This is something that has been bugging me for a while and I'd like to revisit it. I have been using software raid (mdadm) for the past couple years - I currently have the following setup:

Code:
~ $ cat /proc/mdstat
Personalities : [raid1] [raid10] [multipath]
md5 : active raid10 sde[0] sdd[5] sdf[6] sdc[4]
      5860530176 blocks super 1.2 512K chunks 2 near-copies [4/4] [UUUU]
     
md3 : active raid1 sda3[0] sdb3[1]
      4194240 blocks [2/2] [UU]
     
md2 : active raid1 sda2[0] sdb2[1]
      245732608 blocks [2/2] [UU]
     
md1 : active raid1 sda1[0] sdb1[1]
      131008 blocks [2/2] [UU]


So md{1,2,3} are raid1 partitions out of a 2xSSD providing /boot, / , and swap ; while md5 is a 4xHD raid10 providing /dev/vg1/lv{a bunch of stuff}.

When I use S3 suspend to ram, I have to run:
Code:
# /etc/init.d/{several services using handles on md5} stop
# vgchange -a n
# mdadm --manage --stop /dev/md5
# pm-suspend --quirk-none


And everything comes back perfectly fine. If I do not stop the raid array, the system posts and appears alive, but before too long it will hang and I have to use the power button. SSH and the usb input does not work...

I've looked around but I can't find any recent kernel bugs in the raid stack, and personally I can't see how it would be an issue with the raid, but possibly something else - a side effect of the raid perhaps. Does anybody have any ideas as to what could be going on? I'm sure there's a kernel trace but I don't know how to get it without seeing it.

I can try to pair it down a bit further, but the problem with a trial and error approach here is that runs the risk of data loss, and many times the raid10 will end up having to resync, which takes about 6 hours...

Thanks
Back to top
View user's profile Send private message
Display posts from previous:   
Reply to topic    Gentoo Forums Forum Index Kernel & Hardware All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum