Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Two identical storage boxes, each with a 6 disk RAID10 carrying 8 drbd
resources
Doing a sync :
Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn
sda 18.96 0.00 9.48 0 47
sdb 8097.60 0.00 309429.14 0 1550240
dm-0 1157.29 0.00 37033.13 0 185536
dm-1 1518.16 0.00 48581.24 0 243392
dm-2 1683.83 0.00 53882.63 0 269952
dm-3 180.04 0.00 5761.28 0 28864
dm-4 1839.32 0.00 58858.28 0 294880
dm-5 1572.46 0.00 50318.56 0 252096
dm-6 1466.87 0.00 46939.72 0 235168
dm-7 217.96 0.00 6974.85 0 34944
Odd how two of the drbd resources are simply not getting a look in when
it comes to I/O.
This is backed up by the output from drbd :
[root at mail-storage-02 network-scripts]# cat /proc/drbd
version: 8.2.6 (api:88/proto:86-88)
GIT-hash: 3e69822d3bb4920a8c1bfdf7d647169eba7d2eb4 build by
buildsvn at c5-x8664-build, 2008-06-26 19:33:19
0: cs:SyncTarget st:Secondary/Primary ds:Inconsistent/UpToDate C r---
ns:0 nr:27112032 dw:27111648 dr:0 al:0 bm:1655 lo:13 pe:8777 ua:12
ap:0 oos:65744672
[====>...............] sync'ed: 29.3% (64203/90680)M
finish: 0:19:01 speed: 57,472 (39,808) K/sec
1: cs:SyncTarget st:Secondary/Primary ds:Inconsistent/UpToDate C r---
ns:0 nr:32451072 dw:32450560 dr:0 al:0 bm:1982 lo:16 pe:1429 ua:16
ap:0 oos:60848128
[=====>..............] sync'ed: 34.8% (59422/91112)M
finish: 0:15:50 speed: 63,840 (47,648) K/sec
2: cs:SyncTarget st:Secondary/Primary ds:Inconsistent/UpToDate C r---
ns:0 nr:33048608 dw:33047904 dr:0 al:0 bm:2017 lo:22 pe:1363 ua:22
ap:0 oos:69241504
[=====>..............] sync'ed: 32.4% (67618/99892)M
finish: 0:17:16 speed: 66,752 (48,528) K/sec
3: cs:SyncTarget st:Secondary/Primary ds:Inconsistent/UpToDate C r---
ns:0 nr:5674112 dw:5674048 dr:0 al:0 bm:348 lo:2 pe:2323 ua:2 ap:0
oos:83712960
[>...................] sync'ed: 6.4% (81750/87292)M
finish: 4:09:08 speed: 5,280 (8,328) K/sec
4: cs:SyncTarget st:Secondary/Primary ds:Inconsistent/UpToDate C r---
ns:0 nr:36427744 dw:36425376 dr:0 al:0 bm:2228 lo:74 pe:1193 ua:74
ap:0 oos:29073760
[==========>.........] sync'ed: 55.7% (28392/63964)M
finish: 0:05:56 speed: 81,280 (53,488) K/sec
5: cs:SyncTarget st:Secondary/Primary ds:Inconsistent/UpToDate C r---
ns:0 nr:32996256 dw:32995712 dr:0 al:0 bm:2018 lo:17 pe:1381 ua:17
ap:0 oos:32958080
[=========>..........] sync'ed: 50.1% (32185/64408)M
finish: 0:07:27 speed: 73,248 (48,448) K/sec
6: cs:SyncTarget st:Secondary/Primary ds:Inconsistent/UpToDate C r---
ns:0 nr:32899328 dw:32898784 dr:0 al:0 bm:2011 lo:17 pe:1351 ua:17
ap:0 oos:42127648
[=======>............] sync'ed: 43.9% (41140/73268)M
finish: 0:09:48 speed: 71,520 (48,308) K/sec
7: cs:SyncTarget st:Secondary/Primary ds:Inconsistent/UpToDate C r---
ns:0 nr:5655712 dw:5654816 dr:0 al:0 bm:346 lo:28 pe:2398 ua:28 ap:0
oos:84911840
[>...................] sync'ed: 6.3% (82921/88444)M
finish: 14:44:29 speed: 1,536 (8,300) K/sec
Odd ?
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