Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hi
here is the structure
NFSCLIENT------------(NFSSERVER) drbd node1 active
|
(NFSSERVER ) drbd node2 passive
case 1. if i copy 63M file (which is on nfs server) from nfs client it tooks
approximately 55 seconds which is 1.2 MB in second very slow
(root at nfsclient:/# time cp /nfsmount/file_name /nfsmount/tmp_file)
case 2. disconnecting drbd connection with "drbdadm disconnect
resource_name" on node 2 after that
if i copy 63M file (which is on nfs server) from nfs client it tooks
approximately 5 seconds which is 12 MB in second which is normal and means nfs
client, server and network connection has no problem
(root at nfsclient:/# time cp /nfsmount/file_name /nfsmount/tmp_file2)
case 3. connecting drbd source again with drbd connect resource_name on node
2 and waiting for both nodes became uptodate
after that
if i copy file from drbd block device to drbd block device on nfs server,
completed with 25 MB / second which is normal and means drbd has no problem
(root at nfsserver:/# time cp /drbdmountpint/file_name /drbdmountpoint/tmp_file)
as you can see i am very confused and have no idea where is the problem
any suggestions
both nfs server node1 and node2 has centos 5.4 32 bit drbd version 8.0.16
which is in default yum repository
all networks are gbit. Nfs network and drbd NETWORKS ARE SEPARATED between
each other with separated gbit nics. there is no router or any other active
network device, they are connected with crossover cable
and last i used protocol B and C also.
-------------------------------------------
dbrbd configuration file is below
global { usage-count no; }
resource repdata {
protocol A;
startup {
wfc-timeout 0; degr-wfc-timeout 120;
}
disk {
on-io-error detach;
}
net {
}
syncer {
rate 80M;
}
on node1.kkoc.com.tr {
device /dev/drbd0;
disk /dev/sda1;
address 172.16.0.1:7788;
meta-disk internal;
}
on node2.kkoc.com.tr {
device /dev/drbd0;
disk /dev/md0;
address 172.16.0.2:7788;
meta-disk internal;
}
}
-------------------------------------------
thanks for your replies
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