On 03/17/2013 05:18 AM, Kelvin_Huang@xxxxxxxxxx wrote: > Hi, all Hi, > ... > My question is: > 1.The state of I/O pause is normal when ceph recovering ? I have experienced the same issue. This works as designed, and is probably because of the heartbeat-timeout in "osd heartbeat grace" period set to 20 secs - see: http://ceph.com/docs/master/rados/configuration/mon-osd-interaction/ > 2.The pause time of I/O that can not be avoided when ceph recovering ? You can always lower the grace period and heartbeat time, though I don't know if this is a wise idea. Short networking interruptions might mark your OSD out very quickly then. > 3.How to reduce the I/O pause time ? see the link above, or this link here: http://ceph.com/docs/master/rados/configuration/osd-config-ref/#monitor-osd-interaction > > Thanks!! > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- DI (FH) Wolfgang Hennerbichler Software Development Unit Advanced Computing Technologies RISC Software GmbH A company of the Johannes Kepler University Linz IT-Center Softwarepark 35 4232 Hagenberg Austria Phone: +43 7236 3343 245 Fax: +43 7236 3343 250 wolfgang.hennerbichler@xxxxxxxxxxxxxxxx http://www.risc-software.at -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
