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OpenVZ 7 + mdadm slow rebuild [message #53536] Thu, 30 May 2019 10:33 Go to previous message
ccto is currently offline  ccto
Messages: 61
Registered: October 2005
Member
I am preparing (cloning) a new OpenVZ 7 server.

However, when rebuilding /vz (with mdadm RAID-1 3 x 4TB HDD), the sync status is very slow (around 1-4MByte per second).

If I umount /vz , the rebuild speed resumes as normal (around 150Mbyte per second)
If I mount /vz again, the rebuild speed slows down again (around 1-4MByte per second)

The 3 HDD are blank new. I tried to replace SATA cables.

Kernel: 3.10.0-957.12.2.vz7.86.2
No CT nor VM are running. Completely idle server.

Any hints to check?

Thank you for your kind attention
Regards
George
 
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