[DRBD-user] info on multi volume syncer rate

Gianluca Cecchi gianluca.cecchi at gmail.com
Fri Jul 8 13:57:19 CEST 2011

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


Hello,
testing 8.4.0 rc4 and a two volumes resource.

Inside resource twovol I set syncer rate 10M.
During full re-sync I see

[root at drbdsrv1 i386]# cat /proc/drbd
version: 8.4.0rc4 (api:1/proto:86-100)
GIT-hash: 4cae5718c19dbcb1505dadc6d078626e6af205ed build by
oper at drbdsrv1, 2011-07-08 11:08:05
 0: cs:SyncSource ro:Primary/Secondary ds:UpToDate/Inconsistent C r-----
    ns:53248 nr:0 dw:0 dr:53248 al:0 bm:3 lo:0 pe:9 ua:0 ap:0 ep:1
wo:b oos:4141480
	[>....................] sync'ed:  1.3% (4141480/4194092)K
	finish: 0:06:32 speed: 10,520 (10,520) K/sec
 1: cs:SyncSource ro:Primary/Secondary ds:UpToDate/Inconsistent C r-----
    ns:53248 nr:0 dw:0 dr:53248 al:0 bm:3 lo:0 pe:16 ua:0 ap:0 ep:1
wo:b oos:4141868
	[>....................] sync'ed:  1.3% (4141868/4194092)K
	finish: 0:06:35 speed: 10,444 (10,444) K/sec

And comparing with the bandwidth, I effectively see that it is using
overall about 20MB/s
Is this expected? Should I put B/N value in multivolume resource if I
want B bandwidth and have N volumes components?

Gianluca



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