similar to: I/O errors in domU with LVM on DRBD

Good day. I''m getting this error: [101017.440858] blkfront: barrier: empty write xvda op failed [101017.440862] blkfront: xvda: barrier or flush: disabled [101017.463438] end_request: I/O error, dev xvda, sector 3676376 [101017.463452] end_request: I/O error, dev xvda, sector 3676376 [101017.463459] Buffer I/O error on device xvda1, logical block 459291 [101017.463464] lost page write

I just tried this with CentOS 5.3 as well, and got exactly the same symptoms and dmesg output. (As a point of comparison, Ubunu 8.04 on my work laptop is able to access the drive.) Obviously "not detected" is a misapprehension, though I'm puzzled why "lsusb" doesn't show it. The device is there even though the partition table can't be read. ---------- Forwarded

I should have added the output of pvs: [root ~]# pvs PV VG Fmt Attr PSize PFree /dev/xvda2 cl_vm731611 lvm2 a-- 9.00g 0 PFree still show 0. It should show 5g. Also: [root ~]# pvdisplay /dev/xvda2 --- Physical volume --- PV Name /dev/xvda2 VG Name cl_vm731611 PV Size 9.00 GiB / not usable 2.00 MiB Allocatable

How do you resize the partition without loosing data? gparted does not support LVM. On Wed, Feb 22, 2017 at 8:37 AM, SysAdmin <admin at s-s.network> wrote: > Hi, > > you need to resize partition /dev/xvda2, afterwards resize pv. > > Regards, > Holger > > > -----Urspr?ngliche Nachricht----- > > Von: CentOS [mailto:centos-bounces at centos.org] Im Auftrag

Hello, I have a CentOS VM with only one disk on a Xenserver. The disk has 2 partitions: /dev/xvda1 -> /boot /dev/xvda2 -> a physical volume for LVM I added 5GB to this disk via Xencenter to extend /dev/xvda2. Usually I just have to do "pvresize /dev/xvda" to have the additional space added to the disk. But for some reason it does not work for this disk. [root ~]# pvresize

There are a number of flaws in the blktap userspace daemon when dealing with I/O errors. - The backends which use AIO check the io_events.res member to determine if an I/O error occurred. Which is good. But when calling the callback to signal completion of the I/O, they pass the io_events.res2 member Now this seems fine at first glance[1] "res is the usual result of an I/O

Hi All, I had to reboot a machine as I lost the ssh connectivity to it. I could ping to it though. On rebooting, the dmesg buffer showed the following messsage hdc: dma_intr: status=0x51 { DriveReady SeekComplete Error } hdc: dma_intr: error=0x40 { UncorrectableError }, CHS=7520/0/155, sector=1820440 end_request: I/O error, dev 16:02 (hdc), sector 1820440 hdc: dma_intr: status=0x51 { DriveReady

Package: xen-hypervisor-4.4-amd64 Version: 4.4.1-9+deb8u4 Severity: grave Justification: renders package unusable Dear Maintainer, * What led up to the situation? Running Backup Exec or a copy command to NFS-Share causes the VM regurarly to freeze. First message on VM-Console: ---------------------------------------------------------------------------------------------------------------

Hi List, What this means? md: syncing RAID array md0 md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc. md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for reconstruction. md: using 128k window, over a total of 2096384 blocks. md: md0: sync done. RAID1 conf printout: --- wd:2 rd:2 disk 0, wo:0, o:1, dev:sda2 disk 1, wo:0, o:1, dev:sdb2 sd 0:0:0:0:

Hi, I''ve been working on getting a working blktap driver allowing to access ceph RBD block devices without relying on the RBD kernel driver and it finally got to a point where, it works and is testable. Some of the advantages are: - Easier to update to newer RBD version - Allows functionality only available in the userspace RBD library (write cache, layering, ...) - Less issue when

On 09/05/2015 13:25, Ian Campbell wrote: > On Sat, 2015-05-09 at 03:41 +0200, Romain Mourier wrote: > [...] >> xen-create-image --hostname=test0 --lvm=raid10 --fs=ext4 >> --bridge=br-lan --dhcp --dist=jessie > [...] >> root at hv0:~# xl create /etc/xen/test0.cfg && xl console test0 > What does /etc/xen/test0.cfg contain? I suspect it is reusing the dom0

On Thu, March 9, 2017 09:46, John Hodrien wrote: > On Thu, 9 Mar 2017, James B. Byrne wrote: > >> This indicated that a bad sector on the underlying disk system might >> be the source of the problem. The guests were all shutdown, a >> /forcefsck file was created on the host system, and the host system >> remotely restarted. > > fsck's not good at finding

Hello. I can''t start Virtual Machine, have the message: Waiting for root file system ... done. Gave up waiting for root device. Common problems ..... ALERT! /dev/xvda2 does not exist. Dropping to a shell! I have installed Xen 4 in a debian squeeze: # uname -a 2.6.32-5-xen-amd64 #1 SMP Wed Jan 12 05:46:49 UTC 2011 x86_64 GNU/Linux xen-hypervisor-4.0-amd64 4.0.1-2

Hi - relatively inexperienced user here. I installed CentOS 5.2 yesterday (http install via a mirror, worked brilliantly), as well as a new Seagate 1Tb USB external HDD (from the new Xtreme line), for backup/media storage. Using fdisk I put two primary partitions on the Seagate, /dev/sde1 and /dev/sde2 (roughly half the drive each). Then I used mkfs.ext3 on both to create ext3 filesystems

Hi I have two box xen 3.2.1 and 3.3. On the 3.3 box I can''t use drbd as a device in the domu cfg. xm create -c test.cfg Using config file "/etc/xen/test.cfg". Error: Block device must have "phy", "file" or "tap" specified to type cat /etc/xen/test.cfg # Configuration file for the Xen instance test, created # by xen-tools 3.8 on Tue Sep 16

On Thu, 20 Jul 2017, Kevin Stange wrote: > On 07/20/2017 05:31 AM, Piotr Gackiewicz wrote: >> On Wed, 19 Jul 2017, Johnny Hughes wrote: >> >>> On 07/19/2017 09:23 AM, Johnny Hughes wrote: >>>> On 07/19/2017 04:27 AM, Piotr Gackiewicz wrote: >>>>> On Mon, 17 Jul 2017, Johnny Hughes wrote: >>>>> >>>>>> Are the

Hi, I''m running Xen on a Debian Xeon E3110 using the Debian 2.6.26-2-xen kernel. As filesystem for my lvm domU partitions I choosed xfs. I get the following error in kern.log of domU when booting a domU: blkfront: sda2: write barrier op failed blkfront: sda2: barriers disabled end_request: I/O error, dev sda2, sector 0 end_request: I/O error, dev sda2, sector 0 Filesystem

With 2.6.31-rc5 in a KVM guest using dm and virtio_blk, we see the following errors: end_request: I/O error, dev vda, sector 0 end_request: I/O error, dev vda, sector 0 The errors go away if dm stops submitting empty barriers, by reverting: commit 52b1fd5a27c625c78373e024bf570af3c9d44a79 Author: Mikulas Patocka <mpatocka at redhat.com> dm: send empty barriers to targets in

With 2.6.31-rc5 in a KVM guest using dm and virtio_blk, we see the following errors: end_request: I/O error, dev vda, sector 0 end_request: I/O error, dev vda, sector 0 The errors go away if dm stops submitting empty barriers, by reverting: commit 52b1fd5a27c625c78373e024bf570af3c9d44a79 Author: Mikulas Patocka <mpatocka at redhat.com> dm: send empty barriers to targets in

I have a physical SLES11SP2/OES11 system that I''ve converted to a domU. It''s boots ok as an HVM, but when I try to boot as a PV it gets stuck. I have the kernel-xen packages installed and confident the menu.lst is correct. If I look at xm console for the VM I get the output below: Any ideas? Thanks James [ 0.000000] Initializing cgroup subsys cpuset [ 0.000000]