DRBD refers to block devices designed as a building block to form high availability (HA) clusters.
DRBD refers to block devices designed as a building block to form high availability (HA) clusters.
Questions tagged [drbd]
38 questions
5
votes
1 answer
100% CPU utilisation and hang after virsh migrate
I've been experimenting with ZFS + DRBD + live migration (I want to understand it well enough to write my own automation scripts before I start playing with ganeti again, and then openstack cinder). I have the ZFS + DRBD (in dual-primary mode)…
cas
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3
votes
1 answer
DRBD no output of cat /proc/drbd
I sync my new disk, output of drbdtop:
Resource: myres: (Overall danger score: 14)
Local Disc(Primary):
volume 0 (/dev/drbd0): UpToDate(normal disk state)
volume 1 (/dev/drbd1): UpToDate(normal disk state)
volume 2 (/dev/drbd2): Inconsistent(data is…
dorinand
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3
votes
1 answer
Installing DRBD on Redhat 5
I am trying to install DRBD on Redhat 5. Everything i find is out of date, and all the files are not hosted anymore. From what I understand I need to install the Cent OS repositories to install DRBD on Redhat 5?
Can anyone lead me in the right…
PolarisUser
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- 5
3
votes
1 answer
DRBD Failure: (127) Device minor not allocated
I use wmware workstation to run two virtual machines with OpenVZ 2.6.32-042stab108.2 installed on top on CentOS 6.6. I have created another primary partition, /dev/sda4, to configure it as drbd resource. I also created a filsystem on it. The second…
Tanatos Daniel
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2
votes
1 answer
What is the best way to explain this LVM output?
I bumped into the issue two days ago about RAID issue on my TS-251+ QNAP. I do not really bother the box until the problem comes. I explored details to find out what type of RAID, how RAID/LVM construct, etc. Device configure with MDADM raid…
2
votes
1 answer
Drbd issue - is it by design?
On fresh drbd setup (no filesystem on drbd0, just synced) I have invalidated "node2" state and full sync started:
root@node1:~# drbdadm invalidate-remote drbd0
root@node1:~# drbd-overview
0:drbd0/0 SyncSource Secondary/Secondary…
DonJ
- 351
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2
votes
1 answer
How to use /dev/sdb with DRBD?
Setting-up DRBD on CentOS 7 now.
The configuration is:
resource testdata1 {
protocol C;
on node1 {
device /dev/drbd0;
disk /dev/sdb;
address 198.19.0.1:7788;
meta-disk internal;
}
on…
cloud_cloud
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2
votes
2 answers
increase LVM and DRBD
I have two CentOS7 VMs in Primary/Secondary state.
My goal is to increase DRBD block size.
for that I did these steps:
1. added new HD.
2. created new Partition with fdisk - formatted as LVM (/dev/sdc1)
3. added the new partition to vg:
vgextend…
Bar
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2
votes
1 answer
correct method to corrupt super block in ext3 filesystem associated with drbd
I am trying to simulate file system super block corruption.
During this experiment I could not understand the difference between below super block corruption. Please help to know the difference.
A DRBD device drbd1 is created on top of LV (Ex:…
sandeep nagendra
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- 4
2
votes
1 answer
Pacemaker Promote Groups in Specific Order - Or Specify start last
I have a group in Pacemaker which I need to start last. Ideally I'd like to know how to configure groups to start in an specific order, but I can't seem to figure it out, not sure if its possible. Seems like it should be, I love using groups as it…
FreeSoftwareServers
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1
vote
0 answers
Failover using pcs causes DRBD disk get unavailable on source server "No such resource"
I am working on DRBD, PCS to run a 2 node cluster. With the config virtual_IP and DRBD disk works fine on first node. Then I test the failover with "pcs cluster stop" on master, the disk and virtual IP gets properly migrated to second node.…
irfan
- 11
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1
vote
1 answer
drbd data: failed to create debugfs dentry
CentOS 7 kernel release 3.10.0-957.el7.x86_64
drbd 9.0.16-1
Have one resource configured. drbd servicve is not enabled to start at boot time. I reboot the two nodes. One the first node I run systemctl start drbd and get
"DRBD's startup script waits…
blabla_trace
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1
vote
1 answer
putting standby node online results in drbd split brain
I have 2 node cluster on pacemaker/corosync running on scientific linux 6. drbd is running on both nodes master=node1 slave=node2. When i put the slave node2 on standby and then back online everything works fine.
The problem is when i put the master…
Gaoa Bueao
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1
vote
1 answer
Why does udev concatenate two symlinks?
My distribution is SLES 12 SP 2.
I work with DRBD (distributed replicated block device) right now. Here is an example of a configuration for a drbd resource.
resource HA1dat {
device /dev/drbd1;
disk /dev/mqdat/HA1;
meta-disk internal;
on…
user279269
- 13
- 3
1
vote
2 answers
warning /dev/centos/root swap centos-root does not exist -- after configuring DRBD
I configured DRBD on default CentOS 7.3 Installation like following:
/dev/centos/home was taking all the space in sda2 so reduced it and created /dev/centos/home (20% space) and /dev/centos/drbd (remaining space using lvcreate -l 100%VG -n drbd…
bakasan
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