DRBD復旧手順（完全再同期） - 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:41436 dw:55992 dr:14249 al:16 bm:10 lo:0 pe:0 ua:0 ap:0 oos:5076

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:27 lo:0 pe:0 ua:0 ap:0 oos:167936

• 2.Secondaryのデータを切り離す

ノード②

# drbdadm down r0
# drbdadm attach r0
# drbdadm invalidate r0
# 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:WFConnection st:Secondary/Unknown ds:Inconsistent/DUnknown C r---
    ns:0 nr:0 dw:0 dr:0 al:0 bm:27 lo:0 pe:0 ua:0 ap:0 oos:83879388

• 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:41436 dw:56304 dr:14249 al:16 bm:10 lo:0 pe:0 ua:0 ap:0 oos:5188

# 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:221240 nr:0 dw:56700 dr:235433 al:16 bm:23 lo:0 pe:0 ua:0 ap:0 oos:83658196
        [>....................] sync'ed:  0.3% (81697/81913)M
        finish: 0:44:07 speed: 31,596 (31,596) 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:83901188 nr:0 dw:78700 dr:83893429 al:18 bm:5130 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:83901072 dw:83901072 dr:0 al:0 bm:5147 lo:0 pe:0 ua:0 ap:0 oos:0