[DRBD-user] DRBD w/ HA w/ Large file issue

Todd Denniston Todd.Denniston at ssa.crane.navy.mil
Thu Jul 6 15:21:10 CEST 2006

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


pv wrote:
> I have two servers - fedora1, fedora2, wired up w/ drbd and heartbeat and I'm 
> exporting the data (residing on the drbd dev) using NFS which is visible via 
> the cluster interface (via heartbeat). 
> 
> The export is visible via a cluster interface (e.g. /data/export). I mount this 
> export (via the cluster interface) from yet another m/c (nfs client). And I'm 
> doing simple pings and copying/touching files - when I turn on/off one of the 
> nodes (e.g fedora1), the mount point moves from fedora1 to fedora2 and back 
> respectively very well. I copy smaller files and do the same, I do not seem to 
> have any problem, but when I try copying a large ISO image file, I see the 
> following issue:
> 
> 1) between the two servers, fedora1 is the primary and I start copying the 
> large file. at this time - both servers are up and running and copy begins.
> 2) in between the copy, I turn off fedora1 and observe that fedora2 has taken 
> over the cluster interface as well as the nfs export/mount point, but I do not 
> see the large file that I started before the failure.

(2) is unexpected by me.
are you indicating that the file is not visible at the nfs client or when 
logged into the server?
On the server is a big problem.
At the client is probably some minor misconfiguration of the services on the 
server.

> 3) upon failback, I get a stale NFS handle error - in my haresources file, I 
> have the following entry:

what does `ls -ld /var/lib/nfs` (pn both machines) return?
The reason I ask is that the data in /var/lib/nfs needs to be on a disk shared 
between the machines and needs to be accessible _before_ starting nfs and 
nfslock services.


> 
> fedora1  IPaddr::172.30.30.200/24/eth0 drbddisk::r1 
> Filesystem::/dev/drbd1::/data::ext3 restart-nfs restart-rpcidmapd
> 

do you control any other related services with ha? like the nfs service?

> --
> 
> Any idea if my config is wrong or is there an issue dealing w/ large files 
> either in drbd or the ha or NFS itself? Thx in advance.

not enough info, but I know I have worked with files bigger than 2GB and had 
no problems on drbd 0.6.13 on Fedora Core 1 over NFS managed by Heartbeat.
-- 
Todd Denniston
Crane Division, Naval Surface Warfare Center (NSWC Crane)
Harnessing the Power of Technology for the Warfighter
__
please use the "List-Reply" function of your email client.




More information about the drbd-user mailing list