参考报警信息
[root@hh-yun-puppet-129021 ~]# ceph health detail
HEALTH_WARN mon.hh-yun-ceph-cinder026-128076 low disk space
mon.hh-yun-ceph-cinder026-128076 low disk space -- 30% avail参考磁盘空间 , 故障原因: / 磁盘空间少于 70%
[root@hh-yun-ceph-cinder026-128076 ~]# df -h | grep -E 'root|home'
/dev/mapper/centos-root 50G 35G 16G 70% /
/dev/mapper/centos-home 3.6T 33M 3.6T 1% /home注: 如 home 有重要数据, 需先进行备份, 缩减会导致 home 目录中数据不可用 ( 很有可能 )
缩减 HOME 磁盘空间
[root@hh-yun-ceph-cinder026-128076 /]# lvreduce -L100g /dev/centos/home
WARNING: Reducing active and open logical volume to 100.00 GiB
THIS MAY DESTROY YOUR DATA (filesystem etc.)
Do you really want to reduce home? [y/n]: y
Size of logical volume centos/home changed from 2.64 TiB (691200 extents) to 100.00 GiB (25600 extents).
Logical volume home successfully resized查询 lvm 空间
[root@hh-yun-ceph-cinder026-128076 /]# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
home centos -wi-ao---- 100.00g
root centos -wi-ao---- 50.00g
swap centos -wi-ao---- 31.44g
[root@hh-yun-ceph-cinder026-128076 /]# vgs
VG #PV #LV #SN Attr VSize VFree
centos 1 3 0 wz--n- 3.64t 3.46t扩容 root 空间
[root@hh-yun-ceph-cinder026-128076 /]# lvextend -l +100%FREE /dev/centos/root
Size of logical volume centos/root changed from 50.00 GiB (12800 extents) to 3.51 TiB (919900 extents).
Logical volume root successfully resized检查 LVM
[root@hh-yun-ceph-cinder026-128076 /]# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
home centos -wi-ao---- 100.00g
root centos -wi-ao---- 3.51t
swap centos -wi-ao---- 31.44g查询文件系统
[root@hh-yun-ceph-cinder026-128076 /]# df -h | grep -E 'root|home'
/dev/mapper/centos-root 50G 35G 16G 70% /
/dev/mapper/centos-home 3.6T 33M 3.6T 1% /home
[root@hh-yun-ceph-cinder026-128076 /]# mount | grep -E 'root|home'
/dev/mapper/centos-root on / type xfs (rw,relatime,attr2,inode64,noquota)
/dev/mapper/centos-home on /home type xfs (rw,relatime,attr2,inode64,noquota)扩容文件系统
[root@hh-yun-ceph-cinder026-128076 /]# xfs_growfs -d /
meta-data=/dev/mapper/centos-root isize=256 agcount=4, agsize=3276800 blks
= sectsz=4096 attr=2, projid32bit=1
= crc=0 finobt=0
data = bsize=4096 blocks=13107200, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=0
log =internal bsize=4096 blocks=6400, version=2
= sectsz=4096 sunit=1 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 13107200 to 941977600
[root@hh-yun-ceph-cinder026-128076 /]# df -h
文件系统 容量 已用 可用 已用% 挂载点
/dev/mapper/centos-root 3.6T 35G 3.5T 1% /home 目录已经破坏, 需要进行重新格式化. 并进行数据恢复
参考ceph 信息
[root@hh-yun-ceph-cinder026-128076 ~]# ceph health detail
HEALTH_OK
