DRBD復旧手順（再同期） - のんびりSE備忘録 @ ウィキ

• 1.状態確認

ノード①(Primary/Unknownとなっているノードをノード①として定義)

# cat /proc/drbd
version: 8.2.6 (api:88/proto:86-88)
GIT-hash: 3e69822d3bb4920a8c1bfdf7d647169eba7d2eb4 build by [e-mail], 2008-10-14 10:57:44
 0: cs:StandAlone st:Primary/Unknown ds:UpToDate/DUnknown   r---
    ns:0 nr:40952 dw:77608 dr:19845 al:17 bm:10 lo:0 pe:0 ua:0 ap:0 oos:12200

ノード②(Secondary/Unknownとなっているノードをノード②として定義)

# cat /proc/drbd
version: 8.2.6 (api:88/proto:86-88)
GIT-hash: 3e69822d3bb4920a8c1bfdf7d647169eba7d2eb4 build by [e-mail], 2008-10-14 10:57:44
 0: cs:StandAlone st:Secondary/Unknown ds:UpToDate/DUnknown   r---
    ns:0 nr:0 dw:0 dr:0 al:0 bm:32 lo:0 pe:0 ua:0 ap:0 oos:196608

• 2.Secondaryのデータを切り離す

ノード②

# drbdadm disconnect r0
# drbdadm -- --discard-my-data connect r0
# cat /proc/drbd
version: 8.2.6 (api:88/proto:86-88)
GIT-hash: 3e69822d3bb4920a8c1bfdf7d647169eba7d2eb4 build by [e-mail], 2008-10-14 10:57:44
 0: cs:WFConnection st:Secondary/Unknown ds:UpToDate/DUnknown C r---
    ns:0 nr:0 dw:0 dr:0 al:0 bm:32 lo:0 pe:0 ua:0 ap:0 oos:196608

• 3.Primaryで再同期を行う

ノード①

# cat /proc/drbd
version: 8.2.6 (api:88/proto:86-88)
GIT-hash: 3e69822d3bb4920a8c1bfdf7d647169eba7d2eb4 build by [e-mail], 2008-10-14 10:57:44
 0: cs:StandAlone st:Primary/Unknown ds:UpToDate/DUnknown   r---
    ns:0 nr:40952 dw:80364 dr:19849 al:17 bm:10 lo:0 pe:0 ua:0 ap:0 oos:130

# drbdadm connect r0
# cat /proc/drbd
version: 8.2.6 (api:88/proto:86-88)
GIT-hash: 3e69822d3bb4920a8c1bfdf7d647169eba7d2eb4 build by [e-mail], 2008-10-14 10:57:44
 0: cs:SyncSource st:Primary/Secondary ds:UpToDate/Inconsistent C r---
    ns:72748 nr:0 dw:80364 dr:92621 al:17 bm:18 lo:30 pe:6 ua:31 ap:0 oos:124032
        [======>.............] sync'ed: 38.8% (124032/196612)K
        finish: 0:00:03 speed: 36,288 (36,288) K/sec

• 4.同期完了確認（正常状態）

ノード①

# cat /proc/drbd
version: 8.2.6 (api:88/proto:86-88)
GIT-hash: 3e69822d3bb4920a8c1bfdf7d647169eba7d2eb4 build by [e-mail], 2008-10-14 10:57:44
 0: cs:Connected st:Primary/Secondary ds:UpToDate/UpToDate C r---
    ns:196668 nr:0 dw:80420 dr:216461 al:17 bm:42 lo:0 pe:0 ua:0 ap:0 oos:0

ノード②

# cat /proc/drbd
version: 8.2.6 (api:88/proto:86-88)
GIT-hash: 3e69822d3bb4920a8c1bfdf7d647169eba7d2eb4 build by [e-mail], 2008-10-14 10:57:44
 0: cs:Connected st:Secondary/Primary ds:UpToDate/UpToDate C r---
    ns:0 nr:196612 dw:196612 dr:0 al:0 bm:64 lo:0 pe:0 ua:0 ap:0 oos:0