[ https://issues.apache.org/jira/browse/CLOUDSTACK-3776?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Wido den Hollander closed CLOUDSTACK-3776. ------------------------------------------ > System VMs should mount their filesystem with noatime and sync > -------------------------------------------------------------- > > Key: CLOUDSTACK-3776 > URL: https://issues.apache.org/jira/browse/CLOUDSTACK-3776 > Project: CloudStack > Issue Type: Improvement > Security Level: Public(Anyone can view this level - this is the > default.) > Components: SystemVM > Affects Versions: 4.1.0 > Reporter: Wido den Hollander > Assignee: Wido den Hollander > Fix For: 4.2.0 > > > Currently the System VMs mount their filesystem with the default mount > options, which is rw,async. > To improve their stability I recommend that we mount their root filesystem > with: rw,sync,noatime > This will bring their I/O performance down by a bit, but that doesn't matter > that much. It will however make the FS more robust after a hypervisor crash. > Noatime is just to prevent writes on reads and will improve performance by a > fraction. > I have seen a lot of ext3 filesystems go corrupt inside SSVMs under KVM and > rebuilding them can take some time. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira