Osd Disable And Enable

Magicloud

Osd Disable

1. stop_ezs3_service: stop_ezs3_service
2. stop osd

3. disable osd

   • load config: /etc/mcs3/storage.conf (存储卷的配置信息，即osd的配置信息)
   • service ganglia-monitor stop' returns 'Stopping Ganglia Monitor Daemon: gmond.
   • get osd id by osd name
   • stop osd
     
     • ezs3-ha service_ceph stop osd0
     • kill -9 xxx
     • ceph osd down 0, ceph osd out 0, ceph osd rm 0
   • disable osd

   • umount:

     mount_point = "/data/osd.{}".format(self.get_osd_id())
     if os.path.ismount(mount_point):
         umount -f -l /data/osd.0 ?

   • sed -i '\@/data/osd.0@d' /etc/fstab

4. delete part_map

5. set partition map
6. cl.node_management.osd_disabled

Osd Enable

1. prepare enable osd

   • set public interace,cluster interface(if cluster interface is true) and save in ceph.conf (osd, interface等信息存放文件：/etc/ceph/ceph.conf)
   • consolidate_raid_configure
     
     • 查看池信息： /opt/MegaRAID/MegaCli/MegaCli64 -AdpBbuCMD -Aall |grep Exit |tr -d "\n"
     • a series of megaci command

   • 记录osd的状态： role.set(OSD, RoleState.ENABLING)

   • enable osd (@monlock ?)

     • update task info (有空看下代码，如何实现ajax轮询的)

     • get_partition_map:

       try: 
           kvstore.get('partition_map', timeout, timeout!=0) 
       catch: 
           rados -p .ezs3 get partition_map -

     • stop ezs3 service

     • 创建桶节点并且建立link：

       if not host_osd_enabled: 
           ceph osd crush add-bucket {} host".format(crush_host_bucket)
           ceph osd crush link {} pool=default".format(crush_host_bucket)

     • service ganglia-monitor stop

   • StorageVolume

   • enable_osd
     
     • ceph osd create
     • mount: mount -o noatime,user_xattr /dev/disk/by-partlabel/osd1-data /data/osd.0
     • add osd and save
     • ceph mon getmap -o /tmp/monmap （二进制文件）
     • ceph-osd -i {osd_id} --monmap /tmp/monmap --mkfs --mkjournal

   • start osd:

     ezs3-ha service_ceph start osd0

   • ceph osd crush add {osd_id} 0 pool=default host={crush_host_bucket}

   • set osd uuid and osd post stop command