Confirmed. Starting SRU: [IMPACT]
Makes the package unusable for 12.04.2 LTS users unless they downgrade to a 3.2.x kernel [TEST CASE] Install Ubuntu 12.04.2 LTS and attempt to install blktap-dkms package. [REGRESSION POTENTIAL] Could make the package unusable for 12.04.x users who remain on 3.2.x kernel. That needs testing. [OTHER INFO] Here is the bug showing the debdiff and tested/Fixed in a later Ubuntu release: https://bugs.launchpad.net/xcp/+bug/1028135 ** Changed in: blktap-dkms (Ubuntu) Importance: Undecided => High ** Changed in: blktap-dkms (Ubuntu) Status: New => Triaged ** Description changed: + [IMPACT] + + Makes the package unusable for 12.04.2 LTS users unless they downgrade + to a 3.2.x kernel + + [TEST CASE] + + Install Ubuntu 12.04.2 LTS and attempt to install blktap-dkms package. + + [REGRESSION POTENTIAL] + + Could make the package unusable for 12.04.x users who remain on 3.2.x + kernel. That needs testing. + + [OTHER INFO] + + Here is the bug showing the debdiff and tested/Fixed in a later Ubuntu + release: https://bugs.launchpad.net/xcp/+bug/1028135 + + This is on a system with a fresh install of 12.04.2 server. After install, I installed the Xen and XAPI bits. the blktap module fails to load on 3.5 kernels due to broken symbol errors: Trying to start a newly created vm and I get the following with 12.04.2: bladernr@xenserver:~$ xe vm-start uuid=fb22747d-a25a-4f6f-b33a-9ef14783b927 There was an SR backend failure. status: non-zero exit - stdout: + stdout: stderr: Traceback (most recent call last): - File "/usr/lib/xcp/sm/FileSR", line 814, in <module> - SRCommand.run(FileSR, DRIVER_INFO) - File "/usr/lib/xcp/sm/SRCommand.py", line 263, in run - ret = cmd.run(sr) - File "/usr/lib/xcp/sm/SRCommand.py", line 94, in run - return self._run_locked(sr) - File "/usr/lib/xcp/sm/SRCommand.py", line 131, in _run_locked - return self._run(sr, target) - File "/usr/lib/xcp/sm/SRCommand.py", line 196, in _run - writable, caching_params) - File "/usr/lib/xcp/sm/blktap2.py", line 1305, in activate - writable, caching_params): - File "/usr/lib/xcp/sm/blktap2.py", line 46, in wrapper - ret = op(self, *args) - File "/usr/lib/xcp/sm/blktap2.py", line 1337, in _activate_locked - dev_path = self._activate(sr_uuid, vdi_uuid, writable, caching_params) - File "/usr/lib/xcp/sm/blktap2.py", line 1357, in _activate - dev_path = self._tap_activate(phy_path, vdi_type, sr_uuid, writable) - File "/usr/lib/xcp/sm/blktap2.py", line 1149, in _tap_activate - tapdisk = Tapdisk.find_by_path(phy_path) - File "/usr/lib/xcp/sm/blktap2.py", line 616, in find_by_path - return cls.find(path=path) - File "/usr/lib/xcp/sm/blktap2.py", line 604, in find - found = list(cls.list(**args)) - File "/usr/lib/xcp/sm/blktap2.py", line 579, in list - for row in TapCtl.list(**args): - File "/usr/lib/xcp/sm/blktap2.py", line 81, in loop - return f(*__t, **__d) - File "/usr/lib/xcp/sm/blktap2.py", line 293, in list - return list(cls.__list(**args)) - File "/usr/lib/xcp/sm/blktap2.py", line 262, in __list - raise Exception, "blktap kernel module not installed: try 'modprobe blktap'" + File "/usr/lib/xcp/sm/FileSR", line 814, in <module> + SRCommand.run(FileSR, DRIVER_INFO) + File "/usr/lib/xcp/sm/SRCommand.py", line 263, in run + ret = cmd.run(sr) + File "/usr/lib/xcp/sm/SRCommand.py", line 94, in run + return self._run_locked(sr) + File "/usr/lib/xcp/sm/SRCommand.py", line 131, in _run_locked + return self._run(sr, target) + File "/usr/lib/xcp/sm/SRCommand.py", line 196, in _run + writable, caching_params) + File "/usr/lib/xcp/sm/blktap2.py", line 1305, in activate + writable, caching_params): + File "/usr/lib/xcp/sm/blktap2.py", line 46, in wrapper + ret = op(self, *args) + File "/usr/lib/xcp/sm/blktap2.py", line 1337, in _activate_locked + dev_path = self._activate(sr_uuid, vdi_uuid, writable, caching_params) + File "/usr/lib/xcp/sm/blktap2.py", line 1357, in _activate + dev_path = self._tap_activate(phy_path, vdi_type, sr_uuid, writable) + File "/usr/lib/xcp/sm/blktap2.py", line 1149, in _tap_activate + tapdisk = Tapdisk.find_by_path(phy_path) + File "/usr/lib/xcp/sm/blktap2.py", line 616, in find_by_path + return cls.find(path=path) + File "/usr/lib/xcp/sm/blktap2.py", line 604, in find + found = list(cls.list(**args)) + File "/usr/lib/xcp/sm/blktap2.py", line 579, in list + for row in TapCtl.list(**args): + File "/usr/lib/xcp/sm/blktap2.py", line 81, in loop + return f(*__t, **__d) + File "/usr/lib/xcp/sm/blktap2.py", line 293, in list + return list(cls.__list(**args)) + File "/usr/lib/xcp/sm/blktap2.py", line 262, in __list + raise Exception, "blktap kernel module not installed: try 'modprobe blktap'" Exception: blktap kernel module not installed: try 'modprobe blktap' If I try manually loading blktap, I get this error: bladernr@xenserver:~$ sudo modprobe blktap FATAL: Error inserting blktap (/lib/modules/3.5.0-23-generic/updates/dkms/blktap.ko): Unknown symbol in module, or unknown parameter (see dmesg) And looking at dmesg as suggested: [ 4148.840713] blktap: Unknown symbol do_munmap (err 0) [ 4148.840735] blktap: Unknown symbol do_mmap_pgoff (err 0) and I found this that seems to indicate that the Precise version of blktap is incompatible with kernels > 3.3 http://lists.xen.org/archives/html/xen-api/2012-11/msg00107.html Checking it out, this is what is installed on a fresh 12.04.2 server install: bladernr@xenserver:~$ apt-cache policy blktap-dkms blktap-dkms: - Installed: 2.0.91-1 - Candidate: 2.0.91-1 - Version table: - *** 2.0.91-1 0 - 500 http://us.archive.ubuntu.com/ubuntu/ precise/universe amd64 Packages - 100 /var/lib/dpkg/status - + Installed: 2.0.91-1 + Candidate: 2.0.91-1 + Version table: + *** 2.0.91-1 0 + 500 http://us.archive.ubuntu.com/ubuntu/ precise/universe amd64 Packages + 100 /var/lib/dpkg/status Using clues here: http://blog.sleeplessbeastie.eu/2012/10/08/ubuntu-precise-install-youtube-dl-package-using-quantal-repo/ I installed blktap-dkms from the Quantal repo and this time it loaded without errors. bladernr@xenserver:~$ sudo modprobe blktap bladernr@xenserver:~$ sudo apt-cache policy blktap-dkms blktap-dkms: - Installed: 2.0.93-0ubuntu1 - Candidate: 2.0.93-0ubuntu1 - Package pin: 2.0.93-0ubuntu1 - Version table: - *** 2.0.93-0ubuntu1 990 - 500 http://us.archive.ubuntu.com/ubuntu/ quantal/universe amd64 Packages - 100 /var/lib/dpkg/status - 2.0.91-1 990 - 990 http://us.archive.ubuntu.com/ubuntu/ precise/universe amd64 Packages + Installed: 2.0.93-0ubuntu1 + Candidate: 2.0.93-0ubuntu1 + Package pin: 2.0.93-0ubuntu1 + Version table: + *** 2.0.93-0ubuntu1 990 + 500 http://us.archive.ubuntu.com/ubuntu/ quantal/universe amd64 Packages + 100 /var/lib/dpkg/status + 2.0.91-1 990 + 990 http://us.archive.ubuntu.com/ubuntu/ precise/universe amd64 Packages After doing this, as mentioned, the blktap module loads without issue and I am able to kick off that VM with no further tracebacks. Thus, the older version of blktap is not compatible with 3.5 kernels, so we need to backport 2.0.93-0ubuntu1 to precise for quantal kernel usage... ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: blktap-dkms 2.0.93-0ubuntu1 ProcVersionSignature: Ubuntu 3.5.0-23.35~precise1-generic 3.5.7.2 Uname: Linux 3.5.0-23-generic x86_64 ApportVersion: 2.0.1-0ubuntu17.1 Architecture: amd64 Date: Tue Mar 19 16:55:04 2013 InstallationMedia: Ubuntu-Server 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130214) MarkForUpload: True ProcEnviron: - TERM=xterm - PATH=(custom, no user) - LANG=en_US.UTF-8 - SHELL=/bin/bash + TERM=xterm + PATH=(custom, no user) + LANG=en_US.UTF-8 + SHELL=/bin/bash SourcePackage: blktap-dkms UpgradeStatus: No upgrade log present (probably fresh install) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1157421 Title: blktap-dkms version in 12.04.2 is not compatible with the 12.04.2 kernel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/blktap-dkms/+bug/1157421/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
