Hi,  I was finally able to connect to the xenapi hypervisor.  However, once I connect to virsh and give a 'quit' command I get  "* glibc detected *** virsh: double free or corruption (fasttop):". Please find below the actual memory dump.   Note: I have disabled the SSL certificate verification in xenapi_driver.c by setting curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0) & curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0).     [root@sharmila libvirt-0.9.2]# virsh -c "xenapi://localhost" Enter username for localhost: root Enter root's password for localhost: Welcome to virsh, the virtualization interactive terminal.    Type:  'help' for help with commands        'quit' to quit    virsh # list --all  Id Name                 State ----------------------------------   0 Control domain on host: sharmila running   - Control domain on host: sharmila running   - XenServer SDK 5.6.100-47101p import shut off    virsh # quit    *** glibc detected *** virsh: double free or corruption (fasttop): 0x09fcc370 *** ======= Backtrace: ========= /lib/libc.so.6[0xb6fc56c5] /lib/libc.so.6(cfree+0x59)[0xb6fc5b09] /usr/local/lib/libvirt.so.0(virFree+0x42)[0xb760d712] /usr/local/lib/libvirt.so.0[0xb777031d] /usr/local/lib/libvirt.so.0[0xb776ec10] /usr/local/lib/libvirt.so.0[0xb7676017] /usr/local/lib/libvirt.so.0(virUnrefConnect+0x128)[0xb7677888] /usr/local/lib/libvirt.so.0(virConnectClose+0xda)[0xb769ad4a] virsh[0x8065c73] virsh[0x806672f] /lib/libc.so.6(__libc_start_main+0xdc)[0xb6f71e9c] virsh[0x804e0f1] ======= Memory map: ======== 08048000-08079000 r-xp 00000000 08:01 378273     /usr/local/bin/virsh 08079000-0807a000 rw-p 00031000 08:01 378273     /usr/local/bin/virsh 09fa1000-0a060000 rw-p 00000000 00:00 0          [heap] b6b61000-b6b6c000 r-xp 00000000 08:01 182153     /lib/libgcc_s-4.1.2-20080825.so.1 b6b6c000-b6b6d000 rw-p 0000a000 08:01 182153     /lib/libgcc_s-4.1.2-20080825.so.1 b6b6d000-b6b77000 r-xp 00000000 08:01 181027     /lib/libnss_files-2.5.so b6b77000-b6b78000 r--p 00009000 08:01 181027     /lib/libnss_files-2.5.so b6b78000-b6b79000 rw-p 0000a000 08:01 181027     /lib/libnss_files-2.5.so b6b81000-b6b83000 rw-p 00000000 00:00 0 b6b83000-b6d83000 r--p 00000000 08:01 447132     /usr/lib/locale/locale-archive b6d83000-b6d86000 rw-p 00000000 00:00 0 b6d86000-b6d88000 r-xp 00000000 08:01 180820     /lib/libkeyutils-1.2.so b6d88000-b6d89000 rw-p 00001000 08:01 180820     /lib/libkeyutils-1.2.so b6d89000-b6d91000 r-xp 00000000 08:01 377484     /usr/lib/libkrb5support.so.0.1 b6d91000-b6d92000 rw-p 00007000 08:01 377484     /usr/lib/libkrb5support.so.0.1 b6d92000-b6d99000 r-xp 00000000 08:01 182148     /lib/librt-2.5.so b6d99000-b6d9a000 r--p 00007000 08:01 182148     /lib/librt-2.5.so b6d9a000-b6d9b000 rw-p 00008000 08:01 182148     /lib/librt-2.5.so b6d9b000-b6dab000 r-xp 00000000 08:01 180816     /lib/libresolv-2.5.so b6dab000-b6dac000 r--p 0000f000 08:01 180816     /lib/libresolv-2.5.so b6dac000-b6dad000 rw-p 00010000 08:01 180816     /lib/libresolv-2.5.so b6dad000-b6daf000 rw-p 00000000 00:00 0 b6daf000-b6ddf000 r-xp 00000000 08:01 378111     /usr/lib/libidn.so.11.5.19 b6ddf000-b6de0000 rw-p 0002f000 08:01 378111     /usr/lib/libidn.so.11.5.19 b6de0000-b6de1000 rw-p 00000000 00:00 0 b6de1000-b6de3000 r-xp 00000000 08:01 180823     /lib/libcom_err.so.2.1 b6de3000-b6de4000 rw-p 00001000 08:01 180823     /lib/libcom_err.so.2.1 b6de4000-b6e0a000 r-xp 00000000 08:01 378185     /usr/lib/libk5crypto.so.3.1 b6e0a000-b6e0b000 rw-p 00025000 08:01 378185     /usr/lib/libk5crypto.so.3.1 b6e0b000-b6e9f000 r-xp 00000000 08:01 378198     /usr/lib/libkrb5.so.3.3 b6e9f000-b6ea2000 rw-p 00093000 08:01 378198     /usr/lib/libkrb5.so.3.3 b6ea2000-b6ece000 r-xp 00000000 08:01 378160     /usr/lib/libgssapi_krb5.so.2.2 b6ece000-b6ecf000 rw-p 0002c000 08:01 378160     /usr/lib/libgssapi_krb5.so.2.2 b6ecf000-b6ed2000 r-xp 00000000 08:01 377492     /usr/lib/libgpg-error.so.0.3.0 b6ed2000-b6ed3000 rw-p 00002000 08:01 377492     /usr/lib/libgpg-error.so.0.3.0 b6ed3000-b6ed4000 rw-p 00000000 00:00 0 b6ed4000-b6f0f000 r-xp 00000000 08:01 182149     /lib/libsepol.so.1 b6f0f000-b6f10000 rw-p 0003b000 08:01 182149     /lib/libsepol.so.1 b6f10000-b6f1a000 rw-p 00000000 00:00 0 b6f1a000-b6f5a000 r-xp 00000000 08:01 378242     /usr/local/lib/libcurl.so.4.1.0 b6f5a000-b6f5b000 rw-p 00040000 08:01 378242     /usr/local/lib/libcurl.so.4.1.0 b6f5b000-b6f5c000 rw-p 00000000 00:00 0 b6f5c000-b70af000 r-xp 00000000 08:01 180994     /lib/libc-2.5.so b70af000-b70b1000 r--p 00153000 08:01 180994     /lib/libc-2.5.so b70b1000-b70b2000 rw-p 00155000 08:01 180994     /lib/libc-2.5.so b70b2000-b70b5000 rw-p 00000000 00:00 0 b70b5000-b70b8000 r-xp 00000000 08:01 180979     /lib/libdl-2.5.so b70b8000-b70b9000 r--p 00002000 08:01 180979     /lib/libdl-2.5.so b70b9000-b70ba000 rw-p 00003000 08:01 180979     /lib/libdl-2.5.so b70ba000-b70e1000 r-xp 00000000 08:01 182017     /lib/libm-2.5.so b70e1000-b70e2000 r--p 00026000 08:01 182017     /lib/libm-2.5.so b70e2000-b70e3000 rw-p 00027000 08:01 182017     /lib/libm-2.5.so b70e3000-b70e4000 rw-p 00000000 00:00 0 b70e4000-b70f6000 r-xp 00000000 08:01 378165     /usr/lib/libz.so.1.2.3 b70f6000-b70f7000 rw-p 00011000 08:01 378165     /usr/lib/libz.so.1.2.3 b70f7000-b7223000 r-xp 00000000 08:01 378174     /usr/lib/libxml2.so.2.6.26 b7223000-b7228000 rw-p 0012c000 08:01 378174     /usr/lib/libxml2.so.2.6.26 b7228000-b7229000 rw-p 00000000 00:00 0 b7229000-b723e000 r-xp 00000000 08:01 181033     /lib/libpthread-2.5.so b723e000-b723f000 r--p 00015000 08:01 181033     /lib/libpthread-2.5.so b723f000-b7240000 rw-p 00016000 08:01 181033     /lib/libpthread-2.5.so b7240000-b7242000 rw-p 00000000 00:00 0 b7242000-b7258000 r-xp 00000000 08:01 181005     /lib/libselinux.so.1 b7258000-b725a000 rw-p 00015000 08:01 181005     /lib/libselinux.so.1 b725a000-b7389000 r-xp 00000000 08:01 182129     /lib/libcrypto.so.0.9.8e b7389000-b739c000 rw-p 0012e000 08:01 182129     /lib/libcrypto.so.0.9.8e b739c000-b73a0000 rw-p 00000000 00:00 0 b73a0000-b73e4000 r-xp 00000000 08:01 180822     /lib/libssl.so.0.9.8e b73e4000-b73e8000 rw-p 00043000 08:01 180822     /lib/libssl.so.0.9.8e b73e8000-b7419000 r-xp 00000000 08:01 383239     /usr/lib/libcurl.so.3.0.0 b7419000-b741a000 rw-p 00031000 08:01 383239     /usr/lib/libcurl.so.3.0.0 b741a000-b741b000 rw-p 00000000 00:00 0 b741b000-b747b000 r-xp 00000000 08:01 378267     /usr/lib/libxenserver.so.1.3 b747b000-b747f000 rw-p 00060000 08:01 378267     /usr/lib/libxenserver.so.1.3 b747f000-b74a3000 r-xp 00000000 08:01 383129     /usr/lib/libssh2.so.1.0.1 b74a3000-b74a4000 rw-p 00024000 08:01 383129     /usr/lib/libssh2.so.1.0.1 b74a4000-b74a8000 r-xp 00000000 08:01 376977     /usr/lib/libxenstore.so.3.0.0 b74a8000-b74a9000 rw-p 00003000 08:01 376977     /usr/lib/libxenstore.so.3.0.0 b74a9000-b74ac000 rw-p 00000000 00:00 0 b74ac000-b752a000 r-xp 00000000 08:01 378181     /usr/lib/libgcrypt.so.11.5.2 b752a000-b752d000 rw-p 0007d000 08:01 378181     /usr/lib/libgcrypt.so.11.5.2 b752d000-b75a6000 r-xp 00000000 08:01 380857     /usr/lib/libgnutls.so.13.0.6 b75a6000-b75ac000 rw-p 00078000 08:01 380857     /usr/lib/libgnutls.so.13.0.6 b75ac000-b75ad000 rw-p 00000000 00:00 0 b75ad000-b75cc000 r-xp 00000000 08:01 180978     /lib/libdevmapper.so.1.02 b75cc000-b75ce000 rw-p 0001e000 08:01 180978     /lib/libdevmapper.so.1.02 b75cf000-b75d6000 r--s 00000000 08:01 412913     /usr/lib/gconv/gconv-modules.cache b75d6000-b75d7000 r-xp 00000000 08:01 377141     /usr/local/lib/libvirt-qemu.so.0.9.2 b75d7000-b75d8000 rw-p 00000000 08:01 377141     /usr/local/lib/libvirt-qemu.so.0.9.2Aborted    Moreover, Iam not able to start any VMs uisng xencenter after i have started using virsh. It says,  Error: Starting VM 'XenServer SDK 5.6.100-47101p import' - Internal error: another frontend device is already connected to this domain (frontend (domid=0 | kind=vbd | devid=51712); backend (domid=0 | kind=vbd | devid=51712)). Even a reboot of the machine didnt help.   Any pointers on the above 2 issues would be of great help.   Thanks in Advance!   Regards, Sharmila   From: "G Naresh Kumar"naresh.gadepalli@gmail.com Sent: Sat, 16 Jul 2011 16:55:16 +0530 To: Matthias Bolte matthias.bolte@googlemail.com Cc: libvirt-users@redhat.com Subject: Re: [libvirt-users] Is libvirt supported on Citrix Xenserver?   Hi Matthias, > Sorry for the confusion.It was an edited one & hence thetypo. Below is the actual output: # virsh -c xenapi://<myip> Enter username for <myip>: root Enter root's password for <myip>: error: authentication failed: (null) I was not able to get anything in the Xen logs. Somehowfigured out to print the Xen error using the patch given at the link http://osdir.com/ml/libvir- list/2011-06/msg00298.html. It prints"TRANSPORT_FAULT". Any pointers to this error would be much appreciated. Iam also trying to debugthis issue. As per your suggestion, I had used make rpm. But it requires xen-devel pacakge,which I was not able to get for Xen 3.4.2. Is there any way where I canuse the source package and build & install the library without using'make rpm' ? Thanks for all the help. > Regards Naresh > On Thu, Jul 14, 2011 at 7:07 PM, Matthias Bolte <matthias.bolte@googlemail.com> wrote: > 2011/7/14 G Naresh Kumar <naresh.gadepalli@gmail.com>: >> Hi Maththias, > > Thanks for the help. I finally was able to compile/install libvirt on >> xenserver. >> >> I tried compiling the libvirt 0.9.2 with xen api support. Was able to >> install it successfully. When I tried giving the virsh command, I got an >> ‘authentication failed’ error as shown below. >> >> # virsh -c xenapi://<my local ip> >> Enter username for <mylocalip>: root > >Here you entered root > >> Enter intel123's password for <my local ip>: > >but here it asks for intel123's, that's unexpected. Did you edit this >one before mailing it, or is there really this mismatch? > >> error: authentication failed: (null) > >Outputting (null) here is actually a bug. The only way this can happen >is when the login attempt fails but the XenServer doesn't provide an >error message. Maybe have a look at the XenServer logs to see if it >says something about a failed login attempt. > >> I also tried connecting to the local machine as below, >> >> virsh -c "xenapi:///" >> error: authentication failed: Server name not in URI >> error: failed to connect to the hypervisor > >The XenAPI driver expects a server name. xenapi:/// _could_ be treated >as xenapi://localhost, but it's not implemented that way. > >> Also I am trying to install ruby-libvirt on xenserver, which looks like >> requires libvirt-devel package to be installed. How do I build it from the >> libvirt 0.9.2 source package. > >Running 'make rpm' should build an libvirt-devel RPM package for you. > >> Thanks, >> >> Naresh >> >> On Wed, Jun 15, 2011 at 8:19 PM, Matthias Bolte >> <matthias.bolte@googlemail.com> wrote: >>> >>> 2011/6/15 G Naresh Kumar <naresh.gadepalli@gmail.com>: >>> > Hi Maththias, >>> > >>> > Thanks a lot for your response!. >>> > >>> > Is there a specific version of libvirt from which xenserver support is >>> > added? I am getting the below error >>> > >>> > "error: invalid argument in libvirt was built without the 'xenapi' >>> > driver" >>> >>> The means that your libvirt version is new enough and contains the >>> XenAPI driver but that it was disabled on configure time, probably >>> because the build server didn't have libxenserver installed and >>> libvirt's configure script automatically disabled the driver because >>> of a missing dependency. >>> >>> > I have installed libvirt from citrix yum repo. >>> >>> Then Citrix build libvirt without XenAPI support. As a long term >>> solution you could report to whom ever is responsible for that repo >>> and request to enabled XenAPI support in that libvirt package. As a >>> short term solution you could build libvirt from source yourself and >>> make sure to get the XenAPI driver enabled. >>> >>> > I am using Xenserver 5.5 with libvirt 0.8.2 and it does not seem to be >>> > working. >>> >>> According to http://libvirt.org/hvsupport.html and the error message >>> 0.8.2 is new enough. >>> >>> Matthias >>> >>> > Thanks, >>> > >>> > Naresh >>> > >>> > On Jun 15, 2011 7:03 PM, "Matthias Bolte" >>> > <matthias.bolte@googlemail.com> >>> > wrote: >>> >> 2011/6/15 G Naresh Kumar <naresh.gadepalli@gmail.com>: >>> >>> Hi, >>> >>> Is libvirt supported on Citrix Xenserver. I have been searching for >>> >>> the >>> >>> same >>> >>> with little/no luck. >>> >>> If supported, can you point to some links/documents which can help me >>> >>> try >>> >>> out the same. >>> >>> Thanks, >>> >>> Naresh >>> >> >>> >> libvirt can use XenAPI via libxenserver [1]. That should allow you to >>> >> use libvirt with a Citrix XenServer. You can use virsh like this >>> >> assuming you have a libxenserver enabled libvirt: >>> >> >>> >> virsh -c xenapi://my-xen-server >>> >> >>> >> But it's true, there is no documentation about this on the libvirt >>> >> website >>> >> yet. >>> >> >>> >> [1] http://community.citrix.com/display/xs/Download+SDKs >>> >> >>> >> -- >>> >> Matthias Bolte >>> >> http://photron.blogspot.com >>> > >> -- >> I was an atheist till I realized I am GOD >> > >-- > Matthias Bolte >http://photron.blogspot.com > >   >-- >I was an atheist till I realized I am GOD >_______________________________________________ >libvirt-users mailing list >libvirt-users@redhat.com >https://www.redhat.com/mailman/listinfo/libvirt-users