ceph應知應會

建立pool

ceph osd pool create volumes 64

建立rbd

# rbdcreate-- size 12gwyl-- pool

test

列出rbd

# rbd ls -p test demo

wyl

檢視rbd具體資訊

# rbd --image test/demo info rbd image 'demo': size 102400 mb in 25600 objects order 22 (4096 kb objects) block_name_prefix: rbd_data.3e4ec74b0dc51 format: 2 features: layering

flags:

修改rbd大小

# rbd resize demo -p test --size 150g

resizing image: 100% complete...done

縮小

# rbdresize demo-- pool test-- size 99g- -allow

-shrink

識別檔案系統大小

resize2fs /dev/rbd/test/demo（非xfs檔案系統）

xfs_growfs /dev/rbd/test/demo（xfs檔案系統）

刪除rbd

# rbd rm -p test wyl

自動map

/etc/ceph/rbdmap
volumes/wyl             id=admin,keyring=/etc/ceph/ceph.client
.admin
.keyring
多集群「,cluster=

對映rbd

# rbd feature disable sip/rbd exclusive-lock object-map fast-diff deep-flatten

# rbd map wyl --pool test --id

取消對映

rbd unmap /dev/rbd/test/wyl

檢視對映

id pool image snap device

0 test demo - /dev/rbd

01 test wyl - /dev/rbd1

自動map

/etc/ceph/rbdmap

格式

pool/image  id=client,keyring=/etc/ceph/keyring.admin

# service rbdmap start

開機啟動

自動掛載

/etc/fstab

/dev/rbd/test/wyl /mnt xfs default,noatime,_netdev

建立快照

方法一：

# rbd –p snap create –snap

方法二：

# rbd snap create /@

舉例

# rbd –p test snap create –snap demo-snap1 demo

# rbb snap create test/demo@demo-snap

列出快照

# rbd –pool snap ls

# rbd snap ls /

舉例：

# rbd snap ls test/demp

# rbd --pool test snap ls demo

回滾：

# rbd –pool snap rollback --snap

# rbd snap rollback /@

舉例

# rbd --pool test snap rollback --snap demo-snap1 demo

# rbd snap rollback test/demo@demo-snap1

清除所有快照

# rbd –pool snap purge

# rbd snap purge /

刪除指定快照

# rbd –pool snap rm

# rbd snap rm /@

保護快照

建立指定格式

# rbdcreate test1-- pool test-- image -format2- -size

10g

檢視資訊

# rbd info test/test1 rbd image 'test1': size 10240 mb in 2560 objects order 22 (4096 kb objects) block_name_prefix: rbd_data.fa38b238e1f29 format: 2 features: layering, exclusive-lock, object-map, fast-diff, deep-flatten

flags:

保護快照

# rbd --pool snap protect --snap

# rbd snap protect /@

# rbd snap protect test/test1@snap1-test1

# rbd --pool test snap protect --snap snap1-test1 test1

取消保護

# rbd --pool snap unprotect --snap

# rbd snap unprotect /@

# rbd snap unprotect test/test1@snap1-test1

# rbd --pool test snap unprotect --snap snap1-test1 test1

轉殖必須是保護的快照

# rbd clone test/test1@snap

@test1 test/test2

轉殖必須是保護的快照

轉殖

# rbd create wyl –size 10g –-pool –image-format 2 # rbd snap create test/wyl@snap-wyl # rbd snap protect test/wyl@snap-wyl

# rbd clone capacity1/wyl@snap-wyl capacity1/wyl2

檢視轉殖

# rbd –pool children –image –snap # rbd children /@

# rbd children capacity1/wyl@snap-wyl

# ceph osd getcrushmap  -o aa.txt

反編譯

# crushtool -d aa.txt -o  bb.txt

修改後編譯

# crushtool -c bb.txt -o  cc.txt

匯入

# ceph osd setcrushmap  -i cc.txt

手動刪除osd

停止服務

# systemctl stop ceph-osd@1

從crush map中移除osd

# ceph osd out osd.1

# ceph osd crush remove osd1

刪除認證資訊

# ceph auth del osd.1

刪除osd

# ceph osd rm 1

rbd的利用率

mon osd full ratio =0.98

ceph應知應會

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ceph應知應會

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