[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] LVM Checksum error when using persistent grants (#linux-next + stable/for-jens-3.8)
On 06/12/12 04:14, Konrad Rzeszutek Wilk wrote: > Hey Roger, > > I am seeing this weird behavior when using #linux-next + stable/for-jens-3.8 > tree. > > Basically I can do 'pvscan' on xvd* disk and quite often I get checksum > errors: > > # pvscan /dev/xvdf > PV /dev/xvdf2 VG VolGroup00 lvm2 [18.88 GiB / 0 free] > PV /dev/dm-14 VG vg_x86_64-pvhvm lvm2 [4.00 GiB / 68.00 MiB free] > PV /dev/dm-12 VG vg_i386-pvhvm lvm2 [4.00 GiB / 68.00 MiB free] > PV /dev/dm-11 VG vg_i386 lvm2 [4.00 GiB / 68.00 MiB free] > PV /dev/sda VG guests lvm2 [931.51 GiB / 220.51 GiB free] > Total: 5 [962.38 GiB] / in use: 5 [962.38 GiB] / in no VG: 0 [0 ] > # pvscan /dev/xvdf > /dev/xvdf2: Checksum error > Couldn't read volume group metadata. > /dev/xvdf2: Checksum error > Couldn't read volume group metadata. > PV /dev/dm-14 VG vg_x86_64-pvhvm lvm2 [4.00 GiB / 68.00 MiB free] > PV /dev/dm-12 VG vg_i386-pvhvm lvm2 [4.00 GiB / 68.00 MiB free] > PV /dev/dm-11 VG vg_i386 lvm2 [4.00 GiB / 68.00 MiB free] > PV /dev/sda VG guests lvm2 [931.51 GiB / 220.51 GiB free] > Total: 4 [943.50 GiB] / in use: 4 [943.50 GiB] / in no VG: 0 [0 ] > > This is with a i386 dom0, 64-bit Xen 4.1.3 hypervisor, and with either > 64-bit or 32-bit PV or PVHVM guest. > > Have you seen something like this? > > Note, the other LV disks are over iSCSI and are working fine. Thanks for the report Konrad, I'm able to reproduce this: root@debian:~# pvscan -d -v /dev/xvdb2 Wiping cache of LVM-capable devices Wiping internal VG cache Walking through all physical volumes PV /dev/xvdb2 lvm2 [4.99 GiB] Total: 1 [4.99 GiB] / in use: 0 [0 ] / in no VG: 1 [4.99 GiB] root@debian:~# pvscan -d -v /dev/xvdb2 Wiping cache of LVM-capable devices Wiping internal VG cache Walking through all physical volumes No matching physical volumes found What I find strange is that this only happens when using partitions as LVM PVs, if I use the full disk (/dev/xvdb) as a PV I'm not able to reproduce it. I will investigate further. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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