0
現在、同期を停止することを決めたdrbdサーバーがあります。同期を再開するには何もできないようです。シンクプロセスは、2台のサーバ間の専用クロスケーブル（1Gbps銅線）を介して行われます。ここでProtocolErrorでdrbd syncが失敗する
は、私はR01のログで見るものです：
Aug 9 16:09:44 r02 kernel: [12739.178449] block drbd0: receiver (re)started
Aug 9 16:09:44 r02 kernel: [12739.178454] block drbd0: conn(Unconnected -> WFConnection)
Aug 9 16:09:44 r02 kernel: [12739.912037] block drbd0: Handshake successful: Agreed network protocol version 91
Aug 9 16:09:44 r02 kernel: [12739.912048] block drbd0: conn(WFConnection -> WFReportParams)
Aug 9 16:09:44 r02 kernel: [12739.912074] block drbd0: Starting asender thread (from drbd0_receiver [3740])
Aug 9 16:09:44 r02 kernel: [12739.936681] block drbd0: data-integrity-alg: <not-used>
Aug 9 16:09:44 r02 kernel: [12739.936691] block drbd0: Considerable difference in lower level device sizes: 256503768s vs. 1344982880s
Aug 9 16:09:44 r02 kernel: [12739.942918] block drbd0: drbd_sync_handshake:
Aug 9 16:09:44 r02 kernel: [12739.942923] block drbd0: self E17D2EE7BC2C235E:0000000000000000:0000000000000000:0000000000000000 bits:32062701 flags:0
Aug 9 16:09:44 r02 kernel: [12739.942928] block drbd0: peer E21F17F92705CD4F:E17D2EE7BC2C235F:1074ED292C876258:548AFBCD7D5C2C3B bits:32062701 flags:0
Aug 9 16:09:44 r02 kernel: [12739.942933] block drbd0: uuid_compare()=-1 by rule 50
Aug 9 16:09:44 r02 kernel: [12739.942935] block drbd0: Becoming sync target due to disk states.
Aug 9 16:09:44 r02 kernel: [12739.942946] block drbd0: peer(Unknown -> Primary) conn(WFReportParams -> WFBitMapT) pdsk(DUnknown -> UpToDate)
Aug 9 16:09:44 r02 kernel: [12740.099597] block drbd0: conn(WFBitMapT -> WFSyncUUID)
Aug 9 16:09:44 r02 kernel: [12740.104324] block drbd0: updated sync uuid BF8D25FBE26085B0:0000000000000000:0000000000000000:0000000000000000
Aug 9 16:09:44 r02 kernel: [12740.104423] block drbd0: helper command: /sbin/drbdadm before-resync-target minor-0
Aug 9 16:09:44 r02 kernel: [12740.106582] block drbd0: helper command: /sbin/drbdadm before-resync-target minor-0 exit code 0 (0x0)
Aug 9 16:09:44 r02 kernel: [12740.106591] block drbd0: conn(WFSyncUUID -> SyncTarget)
Aug 9 16:09:44 r02 kernel: [12740.106599] block drbd0: Began resync as SyncTarget (will sync 128250804 KB [32062701 bits set]).
Aug 9 16:09:44 r02 kernel: [12740.140796] block drbd0: meta connection shut down by peer.
Aug 9 16:09:44 r02 kernel: [12740.141304] block drbd0: sock was shut down by peer
Aug 9 16:09:44 r02 kernel: [12740.141309] block drbd0: peer(Primary -> Unknown) conn(SyncTarget -> BrokenPipe) pdsk(UpToDate -> DUnknown)
Aug 9 16:09:44 r02 kernel: [12740.141316] block drbd0: short read expecting header on sock: r=0
Aug 9 16:09:44 r02 kernel: [12740.142235] block drbd0: asender terminated
Aug 9 16:09:44 r02 kernel: [12740.142238] block drbd0: Terminating drbd0_asender
Aug 9 16:09:44 r02 kernel: [12740.151561] block drbd0: bitmap WRITE of 979 pages took 2 jiffies
Aug 9 16:09:44 r02 kernel: [12740.151567] block drbd0: 122 GB (32062701 bits) marked out-of-sync by on disk bit-map.
Aug 9 16:09:44 r02 kernel: [12740.151580] block drbd0: Connection closed
Aug 9 16:09:44 r02 kernel: [12740.151586] block drbd0: conn(BrokenPipe -> Unconnected)
Aug 9 16:09:44 r02 kernel: [12740.151592] block drbd0: receiver terminated
そしてR01用：
Aug 9 16:09:44 r01 kernel: [3438273.766768] block drbd0: receiver (re)started
Aug 9 16:09:44 r01 kernel: [3438273.771898] block drbd0: conn(Unconnected -> WFConnection)
Aug 9 16:09:44 r01 kernel: [3438274.474411] block drbd0: Handshake successful: Agreed network protocol version 91
Aug 9 16:09:44 r01 kernel: [3438274.483299] block drbd0: conn(WFConnection -> WFReportParams)
Aug 9 16:09:44 r01 kernel: [3438274.490420] block drbd0: Starting asender thread (from drbd0_receiver [6366])
Aug 9 16:09:44 r01 kernel: [3438274.498900] block drbd0: data-integrity-alg: <not-used>
Aug 9 16:09:44 r01 kernel: [3438274.505166] block drbd0: Considerable difference in lower level device sizes: 1344982880s vs. 256503768s
Aug 9 16:09:44 r01 kernel: [3438274.516226] block drbd0: max_segment_size (= BIO size) = 65536
Aug 9 16:09:44 r01 kernel: [3438274.523385] block drbd0: drbd_sync_handshake:
Aug 9 16:09:44 r01 kernel: [3438274.528677] block drbd0: self E21F17F92705CD4F:E17D2EE7BC2C235F:1074ED292C876258:548AFBCD7D5C2C3B bits:32062701 flags:0
Aug 9 16:09:44 r01 kernel: [3438274.541195] block drbd0: peer E17D2EE7BC2C235E:0000000000000000:0000000000000000:0000000000000000 bits:32062701 flags:0
Aug 9 16:09:44 r01 kernel: [3438274.553710] block drbd0: uuid_compare()=1 by rule 70
Aug 9 16:09:44 r01 kernel: [3438274.559677] block drbd0: Becoming sync source due to disk states.
Aug 9 16:09:44 r01 kernel: [3438274.566897] block drbd0: peer(Unknown -> Secondary) conn(WFReportParams -> WFBitMapS)
Aug 9 16:09:44 r01 kernel: [3438274.666397] block drbd0: conn(WFBitMapS -> SyncSource)
Aug 9 16:09:44 r01 kernel: [3438274.672845] block drbd0: Began resync as SyncSource (will sync 128250804 KB [32062701 bits set]).
Aug 9 16:09:44 r01 kernel: [3438274.683196] block drbd0: /build/buildd-linux-2.6_2.6.32-48squeeze3-amd64-mcoLgp/linux-2.6-2.6.32/debian/build/source_amd64_none/drivers/block/drbd/drbd_receiver.c:1932: sector: 0s, size: 65536
Aug 9 16:09:45 r01 kernel: [3438274.702834] block drbd0: error receiving RSDataRequest, l: 24!
Aug 9 16:09:45 r01 kernel: [3438274.702837] block drbd0: peer(Secondary -> Unknown) conn(SyncSource -> ProtocolError)
Aug 9 16:09:45 r01 kernel: [3438274.703005] block drbd0: asender terminated
Aug 9 16:09:45 r01 kernel: [3438274.703009] block drbd0: Terminating drbd0_asender
Aug 9 16:09:45 r01 kernel: [3438274.711319] block drbd0: Connection closed
Aug 9 16:09:45 r01 kernel: [3438274.711323] block drbd0: conn(ProtocolError -> Unconnected)
Aug 9 16:09:45 r01 kernel: [3438274.711329] block drbd0: receiver terminated
これは単に何度も繰り返されます。
ここr01:~$ cat /etc/drbd.conf
global {
usage-count no;
}
resource drbd0 {
protocol C;
handlers { pri-on-incon-degr "echo '!DRBD! pri on incon-degr' | wall ; exit 1"; }
startup {
degr-wfc-timeout 60; # 1 minute.
wfc-timeout 55;
}
disk {
on-io-error detach;
}
syncer {
rate 100M;
al-extents 257;
}
on r01.c07.mtsvc.net {
device /dev/drbd0;
disk /dev/cciss/c0d0p3;
address 10.0.255.253:7788;
meta-disk internal;
}
on r02.c07.mtsvc.net {
device /dev/drbd0;
disk /dev/cciss/c0d0p6;
address 10.0.255.254:7788;
meta-disk internal;
}
}
は、ネットワークの設定が両側に次のようになります。
r01:~$ rsync --dry-run --verbose --checksum --itemize-changes 10.0.255.254:/etc/drbd.conf /etc/
sent 11 bytes received 51 bytes 124.00 bytes/sec
total size is 615 speedup is 9.92 (DRY RUN)
これは、設定は次のようになります。
設定は、それがあるべきよう、両方のサーバーで同じです：
r01:~$ sudo ifconfig -a | grep -B 2 -A 8 10.0.255
eth2 Link encap:Ethernet HWaddr 00:26:55:d6:f8:fc
inet addr:10.0.255.253 Bcast:10.0.255.255 Mask:255.255.255.0
inet6 addr: fe80::226:55ff:fed6:f8fc/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:4062510240 errors:0 dropped:0 overruns:0 frame:0
TX packets:5692251259 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:5512604514975 (5.0 TiB) TX bytes:5820995499388 (5.2 TiB)
Interrupt:24 Memory:fbe80000-fbea0000
r01:~$ sudo ifconfig -a | grep -B 2 -A 8 10.0.255
eth2 Link encap:Ethernet HWaddr 00:1b:78:5c:a8:fd
inet addr:10.0.255.254 Bcast:10.0.255.255 Mask:255.255.255.252
inet6 addr: fe80::21b:78ff:fe5c:a8fd/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:321977747 errors:0 dropped:0 overruns:0 frame:0
TX packets:264683964 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:332813827055 (309.9 GiB) TX bytes:328142295363 (305.6 GiB)
Interrupt:17 Memory:fdfa0000-fdfc0000
元々r01 nd r02はDebian Squeeze（drbd 8.3.7）を実行していました。それから、Debian Wheezy（drbd 8.3.13）でr02を再構築しました。数日の間スムーズに動作し、drbdの再起動後にこの問題が発生しました。私はこの同じ方法でアップグレードしてきた他のdrbdクラスタもいくつか持っています。それらのいくつかは完全にWheezyにアップグレードされ、残りの半分は圧搾、半分はWheezy、そして上品です。
これまでのところ、この問題を解決しようとしたことがあります。
- はR02のDRBDボリュームを拭くと、ワイプ、再インストール、および再構成R02
- を再同期してみてください。
- r02を別のハードウェアに置き換え、最初から再構築します。
- 私は100％の異なるハードウェアでR01を交換する次のserveral日間（2回）
をクロスケーブルを交換してください。しかし、それが機能しても、私はまだ失われています。私は本当にこの問題の原因とそれを解決する正しい方法を理解したい。
両方のノードでDRBDのバージョンが同じですか？カーネルモジュールのバージョン（およびgitハッシュ）は '/ proc/drbd'に表示されます。 – Dok