Hi All, I need your help. Everytime the vdsm start, the server become *read-only file system*. My OS installed in SAN storage. I also got this error when i add the hosts "Host installation failed. Network error during communication with the host." Here are some errors i got in /var/log/messages: Oct 24 14:24:27 init: libvirtd main process (3394) terminated with status 1 Oct 24 14:24:27 init: libvirtd main process ended, respawning Oct 24 14:24:27 init: libvirtd main process (3410) terminated with status 1 Oct 24 14:24:27 init: libvirtd main process ended, respawning Oct 24 14:24:27 init: libvirtd main process (3416) terminated with status 1 Oct 24 14:24:27 init: libvirtd main process ended, respawning Oct 24 14:24:27 init: libvirtd main process (3420) terminated with status 1 Oct 24 14:24:27 init: libvirtd main process ended, respawning Oct 24 14:24:27 init: libvirtd main process (3425) terminated with status 1 Oct 24 14:24:27 init: libvirtd main process ended, respawning Oct 24 14:24:27 init: libvirtd main process (3434) terminated with status 1 Oct 24 14:24:27 init: libvirtd main process ended, respawning Oct 24 14:24:27 init: libvirtd main process (3439) terminated with status 1 Oct 24 14:24:27 init: libvirtd main process ended, respawning Oct 24 14:24:27 init: libvirtd main process (3443) terminated with status 1 Oct 24 14:24:27 init: libvirtd main process ended, respawning Oct 24 14:24:27 init: libvirtd main process (3447) terminated with status 1 Oct 24 14:24:27 init: libvirtd main process ended, respawning Oct 24 14:24:27 init: libvirtd main process (3457) terminated with status 1 Oct 24 14:24:27 init: libvirtd main process ended, respawning Oct 24 14:24:27 init: libvirtd main process (3461) terminated with status 1 Oct 24 14:24:27 init: libvirtd respawning too fast, stopped Oct 24 14:24:54 kernel: sd 1:0:0:0: rejecting I/O to offline device Oct 24 14:24:54 kernel: sd 1:0:2:0: rejecting I/O to offline device Oct 24 14:24:54 device-mapper: multipath: Failing path 8:64. Oct 24 14:24:54 multipathd: 8:64: mark as failed Oct 24 14:24:54 multipathd: 3600507680281077d680000000000001c: remaining active paths: 5 Oct 24 14:24:54 kernel: sd 2:0:0:0: rejecting I/O to offline device Oct 24 14:24:54 kernel: sd 2:0:1:0: rejecting I/O to offline device Oct 24 14:24:54 kernel: sd 2:0:1:0: rejecting I/O to offline device Oct 24 14:24:54 kernel: device-mapper: multipath: Failing path 8:96. Oct 24 14:24:54 kernel: sd 2:0:2:0: rejecting I/O to offline device Oct 24 14:24:54 kernel: device-mapper: multipath: Failing path 8:112. Oct 24 14:24:54 kernel: sd 1:0:0:0: rejecting I/O to offline device Oct 24 14:24:54 kernel: device-mapper: multipath: Failing path 8:32. Oct 24 14:24:54 kernel: sd 1:0:1:0: rejecting I/O to offline device Oct 24 14:24:54 kernel: device-mapper: multipath: Failing path 8:48. Oct 24 14:24:54 kernel: sd 2:0:0:0: rejecting I/O to offline device Oct 24 14:24:54 kernel: device-mapper: multipath: Failing path 8:80. Oct 24 14:24:54 kernel: sd 2:0:2:0: rejecting I/O to offline device Oct 24 14:24:54 kernel: device-mapper: multipath: Failing path 8:112. Oct 24 14:24:54 kernel: sd 2:0:1:0: rejecting I/O to offline device Oct 24 14:24:54 kernel: device-mapper: multipath: Failing path 8:96. Oct 24 14:24:54 kernel: sd 1:0:2:0: rejecting I/O to offline device Oct 24 14:24:54 kernel: device-mapper: multipath: Failing path 8:64. Oct 24 14:24:54 kernel: Buffer I/O error on device dm-2, logical block 132850 Oct 24 14:24:54 kernel: lost page write due to I/O error on dm-2 Oct 24 14:24:54 kernel: Buffer I/O error on device dm-2, logical block 577540 Oct 24 14:24:54 kernel: lost page write due to I/O error on dm-2 Hope you can help me. Thanks