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RAID 1 problem on centos 5.5

 
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Shannon


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Inscrit le: 23 Avr 2018
Messages: 9

MessagePosté le: Lun 21 Mai - 10:50 (2018)    Sujet du message: RAID 1 problem on centos 5.5 Répondre en citant

Hi,


I have problems with a very slow workstation (even the mouse movement takes seconds....). 
Analyzing the processes, I found out that raid related processes are the reason. 
I have 4 HD, 2 pairs of raid 1. One set of HD covers md0-md3 and one set of HD covers md4-md6. ( run an updated CentOs 5.5 ws)
I see that "md0_raid1" process is changing from status "sleeping" to "uninterruptible" about every 4 seconds.
I changed one HD in this raid 1 set (which covers md0, md1, md2 and md3). When I only had one HD in this raid 1, there were no such processes (of course there was nothing to mirror to ....)
During the exchanging of one of the HD in this raid 1 set (md0-md3) (which I thought was the bad one)), I removed (by mistake) one HD from the other raid pair (md4-md6), which I now am rebuilding, using the mdadm add command. Checking the process list, they show indeed up as "md5resync" in the process list. Same for md4 and md6. This seems OK.
But why do I have these continously recurring "md0_raid1" process in my list, listed as "uninterruptible" ?? What is happeing?
When I check with mdadm --detail /dev/md0:
Status: active,
while for md4-md6 (giving no issues), it says:
Status: clean


Any help will be apprecited.


I didn't find the right solution from the Internet. 


References:
https://centos.org/forums/viewtopic.php?t=16722
Cryptocurrency Marketing


Thank you.
















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