Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hello
Today I added a 10GB partition to the existing two 5GB ones. At the next
full sync I noticed that the 10GB was twice as fast synced as the
smaller 5GB. How is that possible? The config (below) was made by
cut&paste and has the same speed rates. Also the partitions are on the
same raid1 in both servers and of course connected over the same gigabit
crosslink. I always complained about the slow syncing speed but this is
even stranger now...
$ cat drbd.strangeness
root at mail3a:~# cat /proc/drbd
version: 0.6.11 (api:64/proto:62)
0: cs:SyncingAll st:Primary/Secondary ns:567720 nr:0 dw:0 dr:567720 pe:120 ua:0
[==>.................] sync'ed: 11.1% (4450/5004)M
finish: 0:21:32h speed: 3,696 (3,548) K/sec
1: cs:SyncingAll st:Primary/Secondary ns:589080 nr:0 dw:0 dr:589080 pe:183 ua:0
[==>.................] sync'ed: 11.6% (4429/5004)M
finish: 0:21:05h speed: 3,762 (3,682) K/sec
2: cs:SyncingAll st:Primary/Secondary ns:1742340 nr:0 dw:0 dr:1742340 pe:632 ua:0
[===>................] sync'ed: 16.7% (8542/10244)M
finish: 0:13:59h speed: 11,214 (10,889) K/sec
After the big one was finished the speed of the others only changed
marginally:
# cat /proc/drbd
version: 0.6.11 (api:64/proto:62)
0: cs:SyncingAll st:Primary/Secondary ns:4545188 nr:0 dw:0 dr:4545240 pe:513 ua:0
[=================>..] sync'ed: 88.8% (565/5004)M
finish: 0:02:05h speed: 8,808 (4,208) K/sec
1: cs:SyncingAll st:Primary/Secondary ns:4651524 nr:0 dw:0 dr:4651560 pe:634 ua:0
[==================>.] sync'ed: 90.8% (461/5004)M
finish: 0:01:48h speed: 9,729 (4,307) K/sec
2: cs:Connected st:Secondary/Secondary ns:10490412 nr:0 dw:0 dr:10490412 pe:0 ua:
bye,
-christian-
resource drbd0 {
protocol=C
fsckcmd=fsck -p -y
# inittimeout=60
# skip-wait
disk {
do-panic
disk-size=5124703
}
net {
sync-nice=-10
# KB/s
sync-min=100000
sync-max=122070
#tl-size=5000
timeout=60
connect-int=10
ping-int=10
}
on mail3a {
device=/dev/nb0
disk=/dev/sda7
address=10.10.10.1
port=7788
}
on mail3b {
device=/dev/nb0
disk=/dev/sda7
address=10.10.10.2
port=7788
}
}
resource drbd1 {
protocol=C
fsckcmd=fsck -p -y
# inittimeout=60
# skip-wait
disk {
do-panic
disk-size=5124703
}
net {
sync-nice=-10
# KB/s
sync-min=100000
sync-max=122070
#tl-size=5000
timeout=60
connect-int=10
ping-int=10
}
on mail3a {
device=/dev/nb1
disk=/dev/sda8
address=10.10.10.1
port=7789
}
on mail3b {
device=/dev/nb1
disk=/dev/sda8
address=10.10.10.2
port=7789
}
}
resource drbd2 {
protocol=C
fsckcmd=fsck -p -y
# inittimeout=60
# skip-wait
disk {
do-panic
disk-size=10490413
}
net {
sync-nice=-10
# KB/s
sync-min=100000
sync-max=122070
#tl-size=5000
timeout=60
connect-int=10
ping-int=10
}
on mail3a {
device=/dev/nb2
disk=/dev/sda10
address=10.10.10.1
port=7790
}
on mail3b {
device=/dev/nb2
disk=/dev/sda10
address=10.10.10.2
port=7790
}
}
--
Christian Hammers WESTEND GmbH | Internet-Business-Provider
Technik CISCO Systems Partner - Authorized Reseller
Lütticher Straße 10 Tel 0241/701333-11
ch at westend.com D-52064 Aachen Fax 0241/911879