[ceph-users] ceph-disk and mkfs.xfs are hanging on SAS SSD

Hi, I am using Ceph Jewel on Ubuntu 16.04 Xenial, with SAS SSD and driver=megaraid_sas "/usr/bin/python /usr/sbin/ceph-disk prepare --osd-uuid --fs-type xfs /dev/sda3" is hanging. This command is start "mkfs.xfs -f -i size=2048 -- /dev/sda3" which is actually hanging. The system becomes very

[ceph-users] VM hang on ceph

Hi, We are using Ceph Jewel 10.2.5 stable release. We see deadlock with image watcher and VM becomes dead, at this point I can't ping the VM. Here are last few lines from qemu-rbd log. Has anyone seen this and is there a fix for it? 2017-02-26 11:05:54.647071 7faa927fc700 11 objectcacher flush