From mboxrd@z Thu Jan 1 00:00:00 1970 From: Konrad Rzeszutek Wilk Subject: LVM Checksum error when using persistent grants (#linux-next + stable/for-jens-3.8) Date: Wed, 5 Dec 2012 22:14:55 -0500 Message-ID: <20121206031455.GA4408@phenom.dumpdata.com> References: <1351097925-26221-1-git-send-email-roger.pau@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <1351097925-26221-1-git-send-email-roger.pau@citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Roger Pau Monne Cc: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org 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.