Bug 1413499
| Summary: | virt-inspector can't obtain info from rhel7.3 guest image on rhel6.9 host | ||||||
|---|---|---|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | mxie <mxie> | ||||
| Component: | libguestfs | Assignee: | Richard W.M. Jones <rjones> | ||||
| Status: | CLOSED CANTFIX | QA Contact: | Virtualization Bugs <virt-bugs> | ||||
| Severity: | low | Docs Contact: | |||||
| Priority: | low | ||||||
| Version: | 6.9 | CC: | juzhou, kuwei, mzhan, ptoscano, tzheng, xiaodwan | ||||
| Target Milestone: | rc | ||||||
| Target Release: | --- | ||||||
| Hardware: | x86_64 | ||||||
| OS: | Unspecified | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2017-01-23 14:06:04 UTC | Type: | Bug | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Attachments: |
|
||||||
This is actually the XFS thing which is known not to be supported: mount -o ro /dev/rhel/root /sysroot/ [ 2.585441] XFS (dm-1): bad version [ 2.586112] XFS (dm-1): SB validate failed This is essentially the same problem as described in: https://bugzilla.redhat.com/show_bug.cgi?id=1377702#c1 Rich is right: the XFS version on the filesystem might be simply too new for the XFS driver in RHEL 6; you can check the version of the superblock in the image you created: $ virt-rescue -a /dev/sda1 ... ><rescue> xfs_db /dev/sda1 xfs_db> sb xfs_db> p ... versionnum = 0xb4b5 ... (then you can type "quit" to exit the "xfs_db>" prompt.) If the last digit there is 5 (like above), then it means the filesystem has V5 superblocks, which the RHEL kernel does not support (at most it can handle V4 IIRC); V5 superblocks require kernel >= 3.16. See also http://oss.sgi.com/archives/xfs/2016-06/msg00182.html for more details. This is not a bug in libguestfs, but a bug in the kernel, and we cannot fix it in the kernel. See this comment for a fuller explanation: https://bugzilla.redhat.com/show_bug.cgi?id=1377702#c1 |
Created attachment 1241138 [details] virt-inspector2-rhel7.3 Description of problem: virt-inspector can't obtain info from rhel7.3 guest image on rhel6.9 host Version-Release number of selected component (if applicable): libvirt-0.10.2-62.el6.x86_64 python-libguestfs-1.20.11-20.el6.x86_64 libguestfs-1.20.11-20.el6.x86_64 libguestfs-winsupport-1.0-7.el6.x86_64 qemu-kvm-rhev-0.12.1.2-2.501.el6.x86_64 How reproducible: 100% Steps to Reproduce: 1 Prepare a rhel7.3 guest and using virt-inspector to obtain the info from guest image # virt-inspector rhel7.3.img No operating system could be detected inside this disk image. This may be because the file is not a disk image, or is not a virtual machine image, or because the OS type is not understood by virt-inspector. If you feel this is an error, please file a bug report including as much information about the disk image as possible. 2.Try to use virt-inspector2 to obtain the info from rhel7.3 guest image, details pls refer to log"virt-inspector2-rhel7.3" # virt-inspector2 rhel7.3.img <?xml version="1.0"?> <operatingsystems/> Actual results: virt-inspector can't obtain info from rhel7.3 guest image on rhel6.9 host Expected results: virt-inspector can obtain info from rhel7.3 guest image on rhel6.9 host Additional info: 1.virt-inspector and virt-inspector2 can obtain info from rhel7.2 guest image on rhel6.9 host 1.1 # virt-inspector esx5.5-rhel7.2-x86_64-sda linux rhel x86_64 7.2 (Red Hat Enterprise Linux Server release 7.2 (Maipo)) on /dev/rhel/root: Mountpoints: /dev/rhel/root / /dev/sda1 /boot /dev/rhel/swap swap Filesystems: /dev/rhel/root: label: UUID: e14eddc3-7787-41a2-9932-468d09f72284 type: xfs content: linux-root /dev/rhel/swap: type: swap /dev/sda1: label: UUID: 5a44170a-8bb9-4e92-a20f-0f57e979d903 type: xfs content: linux-grub Modprobe aliases: scsi_hostadapter virtio_blk Applications: GConf2 3.2.6 ModemManager 1.1.0 ....... ....... 1.2 # virt-inspector2 esx5.5-rhel7.2-x86_64-sda <?xml version="1.0"?> <operatingsystems> <operatingsystem> <root>/dev/rhel/root</root> <name>linux</name> <arch>x86_64</arch> <distro>rhel</distro> <product_name>Red Hat Enterprise Linux Server release 7.2 (Maipo)</product_name> ..... ..... </operatingsystem> </operatingsystems>