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/dev/dm-? owner changed.

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Operating Systems Linux Red Hat /dev/dm-? owner changed.
# 1  
Old 04-18-2015
RedHat /dev/dm-? owner changed.
After reboot of redhat 6 server , the owner of /dev/dm-? changed, causing the oracle disk group to show insufficient no of disk. how to identify which dm-? owner is changed.?
# 2  
Old 04-18-2015
What is the output of?
Code:
ls -l /dev/dm*

hth
# 3  
Old 04-19-2015
there were 70 to 80 dm there.
currently some of them has root:disk owner.and some of them has oracle:dbadmin owner.

---------- Post updated at 11:20 PM ---------- Previous update was at 11:17 PM ----------

actually when the issue was happened , DBA team logged a case to oracle about disk group. After few minute's they asked to run some script(containing something kfed commands) and asked to upload the o/p. After observing the o/p directly they told that dm-32 owner need to be changed to root:disk. And after changing the owner , issue got resolved.
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