Hi! I have a EL7 desktop box with two sata harddisks and two ssds in a LVM raid1 - thin pool - cache configuration. (Just migrated to this setup a few weeks ago.)
After some days, individual processes start to block in disk wait. I don't know if the problem resides in the cache-, thin- or raid1-layer but the underlying block-devices are fully responsive. I have prepared some info at: http://leo.kloburg.at/tmp/lvm-blocks/ Do the stack backtraces provide enough information to locate the source of the blocks? I'd be happy to provide additional info, if necessary. Meanwhile I'll disable the LVM cache layer to eliminate this potential candidate. Cheers, --leo Kernel is 3.10.0-693.5.2.el7.x86_64 filesystem is XFS lvm2-2.02.171-8.el7.x86_64 -- e-mail ::: Leo.Bergolth (at) wu.ac.at fax ::: +43-1-31336-906050 location ::: IT-Services | Vienna University of Economics | Austria _______________________________________________ linux-lvm mailing list [email protected] https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
