Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hi all,
yes, I can confirm the extrem slow sync speed of drbd 0.7.12.
I run a two node cluster with SLES9/2.6.5-7.193-bigsmp kernel and drbd
on lvm.
Yesterday (both nodes with drbd 0.7.11) I synced a 1 GByte 'Partition'
with a throughput of around 1100K/sec. (aprox. 100 seconds to finish)
Wire protocol: C
Net options:
timeout = 6.0 sec (default)
connect-int = 10 sec (default)
ping-int = 10 sec (default)
max-epoch-size = 2048 (default)
max-buffers = 2048 (default)
sndbuf-size = 131070 (default)
ko-count = 0 (default)
Syncer options:
rate = 102400 KB/sec
group = 1
al-extents = 257
To reproduce Jeff's problem I updated one node to drbd 0.7.12 today
cat /proc/drbd
version: 0.7.12 (api:77/proto:74)
SVN Revision: 1924 build by root at pdftpn001, 2005-08-30 11:37:48
0: cs:SyncSource st:Primary/Secondary ld:Consistent
ns:37864 nr:2 dw:258 dr:37675 al:0 bm:66 lo:0 pe:0 ua:0 ap:0
[>...................] sync'ed: 4.3% (1010968/1048576)K
finish: 51:20:43 speed: 4 (4) K/sec
1: cs:Connected st:Primary/Secondary ld:Consistent
ns:0 nr:0 dw:0 dr:0 al:0 bm:0 lo:0 pe:0 ua:0 ap:0
2: cs:Connected st:Primary/Secondary ld:Consistent
ns:0 nr:0 dw:0 dr:0 al:0 bm:0 lo:0 pe:0 ua:0 ap:0
3: cs:Unconfigured
4: cs:Unconfigured
on the secondary (still 0.7.11) I invalidated 'r0'
Aug 30 11:41:52 pdftpn002 kernel: drbd0: drbdsetup [6982]: cstate
Connected --> WFBitMapT
Aug 30 11:41:52 pdftpn002 kernel: drbd0: 1048576 KB now marked
out-of-sync by on disk bit-map.
Aug 30 11:41:52 pdftpn002 kernel: drbd0: drbdsetup [6982]: cstate
WFBitMapT --> SyncTarget
Aug 30 11:41:52 pdftpn002 kernel: drbd0: Resync started as SyncTarget
(need to sync 1048576 KB [262144 bits set]).
Now it's 2 hours later and the sync is still running!!!!!
Best regards
Andre
Jeff Fisher wrote:
> Hey all,
>
> I know there is already a thread on this; however, I just joined the list.
>
> I had been using drbd 0.7.11 on two machines (P4 3Ghz machines w/ 1 gig
> of ram each and a SCSI hardware RAID1 hdd setup -- of which 50gig is
> setup for drbd) and I was use to seeing 38,000 to 42,000 K/sec sync
> speeds on the initial sync.
>
> I upgraded to drbd 0.7.12 and to test I invalidated the remote side and
> started a full sync. The fastest sync speed I saw was 88 K/sec.
>
> I am using the same config with both 0.7.11 and 0.7.12 and the syncer
> option is set to 50M.
>
> Any ideas?
>
> Jeff
>
>
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--
Mit freundlichen Grüßen
Andre Konopka
Basissysteme
RB Presse-Data GmbH
40196 Düsseldorf
Hausadresse:
Zülpicher Str. 8a Tel: 0211 / 5697- 379
40549 Düsseldorf Fax: 0211 / 5697- 352
E-Mail: Andre.Konopka at Presse-Data.de