similar to: FAQ: How to backup for recovery?

All, I''ve got one Xen server running CentOS 5, with 3 CentOS virtual machines on it. I have what I hope is a simple question: I''d like to backup the virtual machines. I don''t care about anything but the ability to restore a couple of files and be able to be back up and running quickly. At some point I''ll have a spare server ready to migrate running Xen

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, 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

Hi, using SLES10 I''m unable to synchronize the time of DomU with that of Dom0. There is a persistent offset of about 3 seconds! Here''s a small history (not actual output): remote refid st t when poll reach delay offset jitter rkdvmso1.dvm.kl 192.168.0.11 5 u - 64 1 0.136 -2977.1 0.099 *rkdvmso1.dvm.kl 192.168.0.11 5 u 2 64

Hello, in the example configuration-files I always read, that I''ve to add an IP-Adress if I don''t have a DHCPd running. I''m running in bridge-mode. For example: vif = [''ip=192.168.5.99''] But I don''t want to configure the IP-Adress in an config-file on Dom-0; the Admin of the Dom-U should do that with Dom-U''s ifconfig (or

I''ve been testing Xen for a few weeks now and am just about to put it into production use. (I wrote some scripts to create Debian images easily; the tools are included in Debian Sid as "xen-tools".) The only thing troubling me at the moment is backing up the virtual instances. I''m looking to run about four virtual systems upon a host. If the physical host

As discussed in the topic: https://www.redhat.com/archives/libguestfs/2016-March/msg00018.html I'd like to add to libguestfs the disk forensics capabilities offered by The Sleuth Kit. http://www.sleuthkit.org/ The two APIs I'm adding with the patch are a simple example of which type of features TSK can enable. The icat API it's very similar to the previously added ntfscat_i but it

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%

sparsify case: modified guestfs_is_lv mllib: fixed is_btrfs_subvolume Maxim Perevedentsev (3): mllib: add checking for btrfs subvolume lvm: modify guestfs_is_lv to take mountable sysprep: fix btrfs subvolume processing in fs-uuids daemon/lvm.c | 6 ++++-- generator/actions.ml | 6 +++--- mllib/common_utils.ml | 7 +++++++

Has anyone been able to get domU NFS boots working with any version of Xen 4.x? If so, can you please post your config? Both the dom0 Xen version & kernel, as well as the domU config file. I''ve spent a lot of time running through all the docs, HOWTO''s and published configs and assorted patches for Ubuntu 9x-10x and Xen 4x trying NFS booting with each. I''m not going

Hi, as a followup for the signature fix for mount_vfs [1], here it is a patch series to generate automatically all the OCaml interfaces of daemon actions. [1] https://www.redhat.com/archives/libguestfs/2018-April/msg00059.html Thanks, Pino Toscano (5): daemon: directly use Optgroups daemon: use the structs from the Structs module daemon: move Lvm.lv_canonical to new Lvm_utils module

This patcheset fixes errors in virt-sysprep and virt-sparsify. Here we have a common functionality: is_btrfs_subvolume. Doesn't it make sense to turn it into guestfs API? Also I found an issue. In 'virt-sysprep fs-uuids', the uuids for ALL filesystems are regenerated as many times as many roots are in guest. Is it done intentionally? Maxim Perevedentsev (3): mllib: add checking

Hello all, I''ve been searching through the archives and the internet for a while now, and can''t seem to find anything that helps me out. I hope you don''t my posting this to both xen-users and linux-lvm simultaneously, but i figured it''d help keep the solution in one place... even though it''ll be the same across two places... Anyways: My setup is this:

Hello, i have to backup (tape library) a mailsystem with about 300.000 Mailboxes on 2 backends. Summary of all mailboxes are 2 TByte. The mailstore is mdbox. Is it save to do a simple filesystem backup (full and incremental) with backupsoftware? What is the prefered strategy to do a backup for desaster recovery (mailsystem crash) and restoring single usermailboxes? Regards, Claus

I'm still pretty new to running a mail server, but one thing I've come to appreciate over the years is a good backup strategy. Since I have always run my own servers for practice and for personal use I don't have access to Enterprise backup solutions. Because of that I usually just fall back to scripts and tarballs and offload the content on a regular basis. Right now I'm

centos-virt, I'm trying to create/install domU guests all in "one" step, following Daniel's wiki page (I've found these pages really helpful, BTW): http://wiki.centos.org/HowTos/Xen/InstallingCentOSDomU I have a few questions about this process: (1) How would it be modified (w/respect to defining the disk in the domain configuration file) to use a disk layout where dom0

Is there any chance for rdiff ? I need to frequently synchronize big text file (60MB+) undertaking small changes and I am interested in differences between the subsequent versions [DNS RBL data in dnsbl format, 1E6+ lines of text, new version every 20m, on average 50 new entries (lines) in every synchronization] I would like to get (small) diff file as result of rsync session and apply it to

Hi, Our virtual machines have some filesystem corruption problems. The filesystem is being mounted on read-only mode. When running fsck command, everything goes ok. Our configuration Dom0 : RHEL4 Update 3 Xen : 3.0.2.2, compiled from sources. Linux Xen kernel : 2.6.16 File-System : ext3 w/ LVM DomU : Fedora Core 4 ou 6 Xen : 3.0.2.2, compiled from sources. Linux Xen Kernel : 2.6.16

Hello, I have a Xen dom0 (Debian Etch running xen 3.0.3) running different domUs. DomUs'' disks are LVM2 volumes. Now I have increased the size of one of these LVM volumes so I have to inform to the corresponding domU that its disk has increased its size (to resize it without unmounting it). How can I do this? -- Angel L. Mateo Martínez Sección de Telemática Área de Tecnologías de la

[PATCH 1/7] mount: Add mount_vfs_nochroot This is significantly reworked from before. umount is gone as discussed, and variable motion is minimised. [PATCH 2/7] btrfs: Update btrfs_subvolume_list to take Already provisionally ACKed. Previous comment was that cleanup could be tidier. I looked into creating a new cleanup function for fs_buf, but it isn't possible (or simple, anyway) in this