[Bugs] [Bug 1227583] New: [Virt-RHGS] Creating a image on gluster volume using qemu-img + gfapi throws error messages related to rpc_transport

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1227583

            Bug ID: 1227583
           Summary: [Virt-RHGS] Creating a image on gluster volume using
                    qemu-img + gfapi throws error messages related to
                    rpc_transport
           Product: GlusterFS
           Version: mainline
         Component: rpc
          Severity: high
          Assignee: kparthas at redhat.com
          Reporter: kparthas at redhat.com
                CC: bugs at gluster.org, gluster-bugs at redhat.com
        Depends On: 1222785



+++ This bug was initially created as a clone of Bug #1222785 +++

Description of problem:
-----------------------
While creating VM Image file using qemu-img ( which uses qemu's native driver
for gluster ), throws lots of error messages related to RPC_Transport.

The image creation was successful, but the error messages fills up the console.

Version-Release number of selected component (if applicable):
-------------------------------------------------------------
RHEL 6.6 as Hypervisor using,
libvirt-0.10.2-46.el6.x86_64
qemu-kvm-0.12.1.2-2.445.el6.x86_64
qemu-img-0.12.1.2-2.445.el6.x86_64

with RHGS 3.1 Nightly build installed on RHEL 6.6 -
glusterfs-3.7.0-2.el6rhs

How reproducible:
-----------------
Always

Steps to Reproduce:
-------------------
1. Create a VM Image file using 'qemu-img' command
(i.e) qemu-img create -f raw <vm-image-file> 20G

Actual results:
---------------
Observed lots of error messages though the image creation was successful

Expected results:
-----------------
There shouldn't be any error messages seen while creating the image file

Additional info:
----------------
Error message as seen on the console while image creation:
[root at rhs-client10 test]# qemu-img create -f raw
gluster://10.70.37.113/rvol/newvm1.img 21G
Formatting 'gluster://10.70.37.113/rvol/newvm1.img', fmt=raw size=22548578304 
[2015-05-19 07:37:01.990771] E [MSGID: 108006] [afr-common.c:3919:afr_notify]
0-rvol-replicate-0: All subvolumes are down. Going offline until atleast one of
them comes back up.
[2015-05-19 07:37:01.992058] E [rpc-transport.c:512:rpc_transport_unref] (-->
/usr/lib64/libglusterfs.so.0(_gf_log_callingfn+0x1e0)[0x7f8cc0c71fb0] (-->
/usr/lib64/libgfrpc.so.0(rpc_transport_unref+0xc0)[0x7f8cc1ad1ec0] (-->
/usr/lib64/libgfrpc.so.0(rpc_clnt_unref+0x66)[0x7f8cc1ad39a6] (-->
/usr/lib64/libglusterfs.so.0(+0x3054c22a11)[0x7f8cc0c6fa11] (-->
/usr/lib64/libglusterfs.so.0(+0x3054c229a5)[0x7f8cc0c6f9a5] )))))
0-rpc_transport: invalid argument: this
[2015-05-19 07:37:01.992285] E [rpc-transport.c:512:rpc_transport_unref] (-->
/usr/lib64/libglusterfs.so.0(_gf_log_callingfn+0x1e0)[0x7f8cc0c71fb0] (-->
/usr/lib64/libgfrpc.so.0(rpc_transport_unref+0xc0)[0x7f8cc1ad1ec0] (-->
/usr/lib64/libgfrpc.so.0(rpc_clnt_unref+0x66)[0x7f8cc1ad39a6] (-->
/usr/lib64/libglusterfs.so.0(+0x3054c22a11)[0x7f8cc0c6fa11] (-->
/usr/lib64/libglusterfs.so.0(+0x3054c229a5)[0x7f8cc0c6f9a5] )))))
0-rpc_transport: invalid argument: this
[2015-05-19 07:37:01.992490] E [rpc-transport.c:512:rpc_transport_unref] (-->
/usr/lib64/libglusterfs.so.0(_gf_log_callingfn+0x1e0)[0x7f8cc0c71fb0] (-->
/usr/lib64/libgfrpc.so.0(rpc_transport_unref+0xc0)[0x7f8cc1ad1ec0] (-->
/usr/lib64/libgfrpc.so.0(rpc_clnt_unref+0x66)[0x7f8cc1ad39a6] (-->
/usr/lib64/libglusterfs.so.0(+0x3054c22a11)[0x7f8cc0c6fa11] (-->
/usr/lib64/libglusterfs.so.0(+0x3054c229a5)[0x7f8cc0c6f9a5] )))))
0-rpc_transport: invalid argument: this

--- Additional comment from SATHEESARAN on 2015-05-19 03:33:42 EDT ---

I have discussed this issue with Raghavendra Talur and he conveyed the fact
that this error messages has no impact on the functionality.

But still it fills the console with lots of errors messages.


Referenced Bugs:

https://bugzilla.redhat.com/show_bug.cgi?id=1222785
[Bug 1222785] [Virt-RHGS] Creating a image on gluster volume using qemu-img
+ gfapi throws error messages related to rpc_transport
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