similar to: data=journal or data=writeback for NFS server

On Tue, Jul 03, 2012 at 03:19:37PM +0200, Paolo Bonzini wrote: > This patch adds support for the new VIRTIO_BLK_F_CONFIG_WCE feature, > which exposes the cache mode in the configuration space and lets the > driver modify it. The cache mode is exposed via sysfs. > > Even if the host does not support the new feature, the cache mode is > visible (thanks to the existing

On Tue, Jul 03, 2012 at 03:19:37PM +0200, Paolo Bonzini wrote: > This patch adds support for the new VIRTIO_BLK_F_CONFIG_WCE feature, > which exposes the cache mode in the configuration space and lets the > driver modify it. The cache mode is exposed via sysfs. > > Even if the host does not support the new feature, the cache mode is > visible (thanks to the existing

On Fri, Feb 17, 2017 at 02:52:06PM +0100, Gionatan Danti wrote: >Hi all, >I write about libvirt inconsistent behavior when mixing io=native and >cache=writeback. This post can be regarded as an extension, or >clarification request, of BZ 1086704 >(https://bugzilla.redhat.com/show_bug.cgi?id=1086704) > >On a fully upgraded CentOS6 x86-64 machine, starting a guest with

Well, I had the first use of the recovery mode on the RH 8.0 install CD today on a dev system. I changed the mount option for the root partition to data=writeback to see what all the claimed speed increases are about, and the system failed to mount the partition r/w, so the resulting boot failed. After search usenet, it seems other RH folks have had this problem, possibly because it is

Hi list, I would like to understand if, and why, the --unsafe flag is needed when using --copy-storage-all when migrating guests which uses writeback cache mode. Background: I want to live migrate guests with writeback cache from host A to host B and these hosts only have local storage (ie: no shared storage at all). From my understanding, --unsafe should be only required when migrating

On Fri, Feb 17, 2017 at 12:33:28 +0100, Gionatan Danti wrote: > Hi list, > I would like to understand if, and why, the --unsafe flag is needed when > using --copy-storage-all when migrating guests which uses writeback > cache mode. > > Background: I want to live migrate guests with writeback cache from host > A to host B and these hosts only have local storage (ie: no

I'm trying to enable writeback mode for the root partition. However, adding the normal option "rootflags=data=writeback" to my grub.conf kernel line doesn't result in writeback mode (according to `dmesg`). Does anyone know of a way to enable this? -Doug -- Douglas E. Warner <dwarner at ctinetworks.com> Network Engineer CTI Networks, Inc.

My apology for cross posting We have a DELL6850 with 8Gbytes of memory, four 3.2Ghz CPU's , perc 4 raid controller, with fourteen 300Gbyte 10Krpm disk on a powervault 220s, And a powervault 124T LTO-3 tape systems on a separate 160Mbyte/sec adaptec SCSI card. The disks are configured as two 2Tbyte raid 0 partitions using the perc 4 hardware. The problem is - reading from the disk, and

Hi all, I write about libvirt inconsistent behavior when mixing io=native and cache=writeback. This post can be regarded as an extension, or clarification request, of BZ 1086704 (https://bugzilla.redhat.com/show_bug.cgi?id=1086704) On a fully upgraded CentOS6 x86-64 machine, starting a guest with io=native and cache=writeback is permitted: no errors are raised and the VM (qemu, really)

The writeback code uses an empty implementation for its encoder. Replace the code with the generic simple encoder. Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de> --- drivers/gpu/drm/drm_writeback.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/drm_writeback.c b/drivers/gpu/drm/drm_writeback.c index 43d9e3bb3a94..cefb500c4ed7

Hi everybody, I had a problem which you may be interested in. I set data=writeback in /etc/fstab for each of my ext3 partitions (because it complains on "mount -o remount,data=writeback" with "ext3: journal mode can't be altered on remount" or similar) and rebooted. Problem: / was mounted read-only, I couldn't remount it (because mount appends the options from fstab,

After some dialog with Terry Lambert on -hackers, I've been advised to post this here. I have a 4.7-RELEASE-p10 box that is suffering regular kernel panics. The machine is a Dell 2650 running primarily as a file/print server to a number of computer labs of about 400 machines (although it also functions as a rembo image server and squid proxy). It mainly stores applications, which

Hello, I read some threads (some of them not very recent, and perhaps not up to date) and I have not found a clear answer to these: Is it advisable to have /tmp set up with data=writeback option in general? Is it again true if we are considering a laptop? Do I have also to consider writecache of disks in this case or are they totally non related? How to check/set the state of writecache for

From: Liu Bo <liubo2009@cn.fujitsu.com> When the filesystem is readonly, commit transaction is forbiddened. Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com> Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> --- fs/btrfs/transaction.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index

I am trying to use: ocfs-support-1.0.10-1 ocfs-2.4.21-EL-smp-1.0.11-1 ocfs-tools-1.0.10-1 with RedHat AS 3.0, 2-node cluster with shared SCSI. 2 dell 1650s, dual CPUs, PERC 3/DC cards chained to a PowerVault 220S. I am using lvm, and here is my layout: [root@cluster1 archive]# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda2 32G 5.1G 25G

Hi, We continuously see these errors in our logs. I've done some searches on this but nothing seems to point to anything specific. Any ideas? -John Dec 23 20:14:41 valhalla smbd[3574]: [2004/12/23 20:14:41, 0] lib/util_sock.c:get_peer_addr(1000) Dec 23 20:14:41 valhalla smbd[3574]: getpeername failed. Error was Transport endpoint is not connected Dec 23 20:14:41 valhalla

Hello, On doing "$ rsync --progress --archive --partial -vvv rsync://carroll.cac.psu.edu/redhat-ftp/redhat/linux/7.3/en/iso/i386/valhalla -i386-disc1.iso ", I got the following output <--------------------------------------------------------------------------- ------> local_version=24 remote_version=26 receiving file list ... recv_file_name(valhalla-i386-disc1.iso) received 1

I'm trying to mount a samba share located on one Linux server to another samba server for backup purposes. The problem im running into is that i get an error stating: couldn't find service <share I am specifying> Here is what im attempting: One server #1 sambaserver, Where I want the share to be mounted for backup purposes smbmount //valhalla/backupdir /backuparea/valhalla If

Everyone, We just had a pretty bad crash on one of production boxes and the ext2 filesystem on the data partition of our box had some major filesystem corruption. Needless to say, I am now looking into converting the filesystem to ext3 and I have some questions regarding ext3 and Linux software RAID. I have read that previously there were some issues running ext3 on a software raid device

Hi all, I'm looking for some menu examples for Murali's menu system. Specifically, a headstart on creating a Kickstart menu which covers the most common options with the intention of creating this: label ks.menu kernel vmlinuz.ks.$DIST append ksdevice=eth0 ks=http://kickstartserver/$DIST/Custom/ks.cfg.$DIST initrd=initrd.ks.$DIST lang= devfs=nomount ramdisk_size=8192 Hmm...looking