Hi all:
I'm concerning some details about syncing. For example, the secondary was
disconnected while new data were wrote to the primary, and then I connect
the secondary.
Does drbd sync only the different parts or all data on the disk ? And what
if I specify --discard-my-data options while conn
Hi all:
I'm considering using drbd in 2 node ha cluster.
Consider such situation:
Primary down while secondary (from StandAlone to SyncTarget) was syncing
from priamry , so that the data on secondary was Inconsistent and can't be
primary。 In a ha cluster, we would prefer to bring up the secondar
Hi all:
After manual manually recovery from split-brain, I noticed the syncer rate
was limited to 250kb/s (cat /proc/drbd) , which was default value of drbd .
However, It was configured to 10M, drbdadm can confirm this. After running
drbdadm adjust drbd0, the syncer rate was correct. What's th
Hi all:
It seems that the `rate' in `syncer' section only interfere the ackground
synchronizations, but not replicating.
Is there a way to limit the replication bandwidth, envn if it will cause
pending IO, so that it won't eat up all the bandwidth.
___
Hi all:
Is there a way to check the data integrity on both node? I've encounter
an confusing problem.
We have two drbd devices, 20Gb one for application, and 300Gb one for oracle
database(oracle was installed in a different location, which were not
replicated), csums-alg & verify-alg were con
n Fri, Aug 26, 2011 at 8:28 PM, Lars Ellenberg
wrote:
> On Fri, Aug 26, 2011 at 05:50:59PM +0800, Lyre wrote:
> > Hi all:
> >
> > Is there a way to check the data integrity on both node? I've
> encounter
> > an confusing problem.
> >
> > We have t
011 at 11:33 PM, Lyre <417...@gmail.com> wrote:
> Hi Lars:
>
> Yesterday, On the secondary, I shut down drbd, try to use rsync to
> recovery the snapshot, but failed. Then I start drbd to resync from the
> primary node. It was the only time I bypass drbd, howerver,the a
?
On Sat, Aug 27, 2011 at 1:27 AM, Arnold Krille wrote:
>
> On Friday 26 August 2011 17:33:09 Lyre wrote:
> > Yesterday, On the secondary, I shut down drbd, try to use rsync to
> > recovery the snapshot, but failed. Then I start drbd to resync from the
> > primary n
I'm using a logic volume as drbd's underlying device (
/dev/lvmdatas/db for /dev/drbd1 ), with `before-resync-target
"/usr/lib/drbd/snapshot-resync-target-lvm.sh -p 5 -- -c 16k";' and
`after-resync-target /usr/libdrbd/unsnapshot-resync-target-lm.sh;' in
drbd.conf.
Consider the following scenario:
Thx Arnold:
Sorry, I used reply but not `reply to all', so I forward two
`private' mails to drbd maillist again
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Hi all:
When did DRBD write the replication data to TCP/IP buffer?
Per application IO, or DRBD gather enought data and write them in one IO?
Does different protocol use the same mechanism?
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Hi all:
DRBD background resync doesn't promise the IO write order, is that right ?
However, when would actitivy log take effect? In my opinion, it is
similiar to SRL in VVR. But I'm confused, I'm curious how does it
work.
Considering this situtaion:
Oracle runs on Primary node (node1) , while s
So activity log is used only when two nodes are connected ?
I believe SRL in VVR stores the IO write order, so it may contain
serval writes to a same block.
On Wed, Sep 21, 2011 at 8:35 PM, Felix Frank wrote:
> Hi,
>
> good question.
>
> On 09/21/2011 12:23 PM, Lyre wrote:
>&g
Hi all:
Want to know the sync data size of DRBD.
If application write 1 bytes to a drbd device, how may datas will be
write to another node? In this 2 scenarios:
1. Both nodes are connected (UpToDate/UpToDate).
Does it equal to the IO size?
2. background resync.
In a oracle case, we have file
> And also, do you have a name? It's rather uncommon on this last to post
> from a non-identifiable GMail address and also to never give one's name
> in a signature.
Hi Florian, call me Lyre.
I'm not quite sure what you actually mean. But I have extremely bad
network con
Hi all:
In this situation: I force to bring up the secondary node (which was
marked OutDated) as the new primary. After the old Primary node recovered,
dstate on new primary were uptodate/unknown while old primary were
uptodate/outdated. How to resync data from new primary to old primary? I
don't
Hi:
I have two box with drbds build on lvm. At the very beginning, box A
as primary & box B as secondary.
box A crashed while doing background sync from A to B, then I do a
lvm merge to rollback the drbds on B to an consistent status and
bring up the disk.
After box A recover, is it safe to di
Hi:
It may be not appropriate to post this problem here, but I'm just
looking for some clues.
In our testing environment, we have 2 box attaching to different
storage (IBM DS 3000 series), we use LVM to manage the LUNs, build
DRBDs (protocol A) on the top of Logic Volume, and create an or
some more information: oracle on (pervious) primary is able to start
after recovey.
On Fri, Jun 29, 2012 at 11:16 AM, Lyre <417...@gmail.com> wrote:
> Hi:
>
> It may be not appropriate to post this problem here, but I'm just
> looking for some clues.
>
> In our
We are still looking into it. AFAIK, if we change protocol from A to B, or
if we enable archivelog, oracle on secondary is able to start after paimary
reboot.
在 2012-7-2 下午10:03，"Radu Radutiu" 写道：
> Are all your database files on the same filesystem or at least on the same
> DRBD resource? I thin
Hi all:
I have a drbd 8.3.13 compiled on centos 6.2(kernel 2.6.32-220.el6.x86_64)
I tried the Ahead/Behind mode by setting "on-congestion pull-ahead".
Thought I don't exactly understand what does the 'congestion-fill'
parameter mean, by changing it's value, I noticed something amazing.
The manua
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