The issue seems gone while we migrate a SSD+HDD mixed storage which has much better I/O performance than previous NFS one.
Thanks Dag, your advice is helpful. 2016-05-05 21:55 GMT+08:00 Lv Haijiao <[email protected]>: > Hi, Dag > > Thanks for your hint ! > > We don't have chance to reproduce this on our production platform, but we > notice most of these VMs hitting this issue are DB server. > > Even that, live migration is supposed to consume less bandwidth as > majority of VM data is still on the shared storage, need no replication, > except the data in memory. > > Is it right ? :-) > > 2016-05-05 18:04 GMT+08:00 Lv Haijiao <[email protected]>: > >> Hi, >> >> Here's our environment, >> >> >> - ACS 4.7.1 >> - Ubuntu 14.04 KVM >> - NFS as shared, primary storage >> >> >> While we do a couple of VMs live migration in sequence from physical >> server A to B, the file system of some VMs goes into 'ready only' status >> unless we reboot the VM again. >> >> No clue why we only hit this issue on some of VMs. >> >> Any advice or experience sharing is most appreciated ! >> > >
