similar to: Backing up "live" Xen systems?

Hi, I am planning the roll out of a Xen dom0 running CentOS that is going to be running two DomU''s CentOS and Windows 2003 SBS. I am planning on using LVM for the disks as this (so i have read) increases i/o performance compared to image files. I need a solution to back up these machines and I have came up with the following two ideas: Idea 1, Backup the machines as images (lvm

Hi all, I''m doing my first xen, running with 3 domU perfect. I need to know which way to backup domU to restore these to another server if i''ve problem with this machine. There are 3 LVM with 10G in VolGroup01 for each domU, with each of these partitions: /dev/xvda3            8,7G  1,4G  6,9G  17%

Hi All, I have just started looking at the code for Xen so please bear with me. A domU Linux kernel running with independent_wallclock=1 seems to sync its time with dom0 after every "xm unpause" (obviously preceded by an "xm pause"). I don''t see where the xtime variable is being updated after an "xm unpause", i.e., domain_unpause_by_systemcontroller().

> Hi, Simon > > >Two things: > > > >1. I''m not convinced ''xm crash'' is needed - ''xm destroy'' will do this > >(and if you want > > a dump, do ''xm dump'' followed by ''xm destroy'') > > > What do you mean? > I think we cannot dump with "xm destroy" now. >

Hi! DomUs can be backed up just fine, and there''s no problem to restore files as long as the DomU boots. Now I wonder how to recover hard (desaster recovery)... Backing up the disk images or partitions (from Dom0) seems to be not an option, because there are changes to them all the time, so incremental backups would always save them, and all saves would be inconsistent. Now the idea

Please tell me if I am wrong : Xen needs LVM to perform domU snapshots and snapshots must be performed by dom0. By the way, a LVM volume group should not be used by more that one kernel at the same time. So if we use a SAN storage, one volume group should be activated on only one server and deactivated on the others. But if we do that, it should not be possible to perform live migration of

This cset: changeset: 11473:0008fca70351 date: Thu Sep 14 08:19:38 2006 +0100 description: xm dump command add on xm dump-core [-L|--live][-C| --crash] <domID> [output path] Didn''t actually implement anything. Worse, it looks like we don''t even pause the domain, so it''s always live (not good). What''s going on? regards john

Hey all! I'm trying to do a bit of logic here so that a user only has to dial one code to pause/unpause in a queue (e.g. *0 will (un)pause depending on the users's state). My logic looks fine to me but every time ${PQMSTATUS} shows up empty. Here's the extensions.conf part.... exten => *0,1,NoOp(${PQMSTATUS}) exten => *0,n,Macro(user-callerid,SKIPTTL,) exten =>

Hi all. I''m using sles11 for my xen servers. I would really like to be able to do hot snapshots of disk AND memory, and then have these snapshots backed up to tape or off site for disaster recovery. I''m thinking this would be done weekly or monthly, not nightly. Two questions: 1) Is this even possible? 2) I could probably have the systems shutdown to make a clean backups, but

Hi, In the case of linux, crash_kexec() is occured by "sysrq c". In the case of DomainU on xen, Help is occured by "sysrq c" now. So The way of dumping DomainU''s memory manualy is nothing. I fix this issue by the following way. 1. Panic is occured by "sysrq c" on both Domain0 and DomainU. 2. On DomainU, coredump is generated in /var/xen/dump (on Domain0).

I''ve installed a FC5 domU under RHEL5-beta2 dom0 with virt-manager. As the disk for domU I used: phy:/dev/mapper/VolGroup00-LogVol02,xvda,w In the domU I have partitions: /dev/xvda1 on / type ext3 (rw) /dev/xvda2 on /var type ext3 (rw) How do I access these partitions from dom0? For example if I take an LVM snapshot of LogVol02, how do I mount the / partition of the domU installed on

Two things: 1. I''m not convinced ''xm crash'' is needed - ''xm destroy'' will do this (and if you want a dump, do ''xm dump'' followed by ''xm destroy'') 2. I don''t see the point of the --noreboot option on ''xm dump'' -- I think this command should simply live-dump the specified domain - as

This patchset allows the user to define and manage groups of domains. The patch augments the xm utility with the following commands: grp-create, grp-shutdown, grp-destroy, grp-reboot, grp-pause, grp-unpause, grp-save, grp-restore, grp-join, and grp-migrate. A goal during development of group operations was to match support for common domain operations: create, shutdown, destroy, reboot, pause,

Hi all, Can Xen hypervisor modify HVM domU's Shadow page table, under the dom0's context, like trapped from dom0's hypercall? I think it have to call 2 functions at least: guest_walk_tables() and flush_tlb_all(). Can these 2 functions called in dom0's context? In my test, if hypervisor tries to modify HVM's shadow page table, it will bring down the whole system. I am not

Hello Everyone. Well i want to write some information (not a complete backup) from my Virtual Machine to the tape drive, but the VM can''t read it. I guess i need to attach this device to the VM so it can read and write the tape driver but i don''t know how to do that, i found something similar but with a cd: # xm block-list <vm-id> –long # xm block-detach 1 5632 -f # xm

Hi, all, When working on adding PM support to xen, we realized that some enhancements are required to suspend/resume domU. Following is some background and thoughts, and welcome on comments. :-) Currently we use a simple approach (pause/unpause) for domU when ready to pull whole platform into a power save state, saying a S3. Because pause/unpause is out of domU''s knowledge, domU

We are finding that when we stream an ogg file via a .m3u file on our server, playing it with Winamp, pausing the player for an extended period of time results in unpredictable results, such as the file ceasing to play before EOF. Is this a Winamp issue, or is there something someone can tell me about streaming ogg in this manner? -------------- next part -------------- An HTML attachment was

Hi all, I am running Xen 3.2-1 / 2.6.18 on Debian Etch (Dom0). I setup a Dom0 with several DomUs (Linux). Each DomU disk is a LV partition. I have been seeing a few mails about backups and LVM and just wanted to make sure that what I am doing is correct. Each DomU with a database has a cron that dumps the db with mysqldump. Later on, Dom0 will do an LVM Snapshot of all DomUs and then do a

destroy() is being called on exception in both start() and create(). It needs to be called only in create(). Signed-off-by: Aravindh Puthiyaparambil <aravindh.puthiyaparambil@unisys.com> _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

Hi, I wanted to use the same extensions for Pausing and UnPausing queue members. Is that a variable that is set up with the agent status (on call, available, not logged, paused) so that I could use it to make some logic in this extension? exten => 111,1,Set(AGENTEPARADESLOGAR=${$[AGENTBYCALLERID_${CALLERIDNUM}]}) exten => 111,2,PauseQueueMember(|Agent/${AGENTEPARADESLOGAR}) exten =>