first off, hello everybody. i'm somewhat new to drbd and definitely new
to the mailing list.
i am try to set up a cheap alternative to a iscsi san using some
somewhat commodity hardware and drbd. i happen to have some 10 gigabit
network interfaces around so i thought it would be a great interconnect
for the drbd replication and probably as the interconnect to the rest of
the network.
things were going well in my small proof of concept but when i made the
jump to the 10 gigabit network interfaces, i started running into
troubles with drbd not being able to complete a synchronization. it will
get anywhere between 5 and 15 percent done (on a 2TB volume) and the
stall. the only thing i have been able to do to get things going again
is to take down the network interface, stop drbd, bring back up the
interface, start drbd, and wait for it to stall again. i have to take
down the network interface because drbd wont respond until then.
in dmesg on the node with the UpToDate disk, i see errors like this in
the kernel log.
[191401.876167] drbd0: Began resync as SyncSource (will sync 1809012776
KB [452253194 bits set]).
[191409.068152] drbd0: [drbd0_worker/24334] sock_sendmsg time expired,
ko = 4294967295
[191416.533556] drbd0: [drbd0_worker/24334] sock_sendmsg time expired,
ko = 4294967294
[191423.531804] drbd0: [drbd0_worker/24334] sock_sendmsg time expired,
ko = 4294967293
[191429.888326] drbd0: [drbd0_worker/24334] sock_sendmsg time expired,
ko = 4294967292
[191437.658299] drbd0: [drbd0_worker/24334] sock_sendmsg time expired,
ko = 4294967291
in my trouble shooting, i tried changing the replication to use the
gigabit network interfaces already in the system and the synchronization
completed. i also tried a newer kernel and a new version of drbd.
i am doing this on debian lenny using the 2.6.26 kernel and drbd 8.0.14
that are with the distro. the system is a single opteron 2346 on a
supermicro h8dme-2 with a intel 10 gigabit nic. the underlying device is
a software raid10 with linux md. i did try a 2.6.30 kernel and drbd 8.3
but it didn't help.
has anyone seen anything like this or have any recommendations?
thanks in advance
mike
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