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Cannot Open Backing Device

There's no need to wait until syncronisation has finished, you can immediately format (mkfs.ext4 /dev/drbd0) and use the filesystems... Troubleshooting and error recovery Dealing with hard drive failure Manually detaching DRBD from your hard drive Automatic detach on I/O error Replacing a failed disk when using internal meta data Replacing Be sure that all filesystems, that should be handeled by drbd, are unmounted and the drbd-module is loaded: root:~# dd if=/dev/zero of=/dev/vda6 bs=512 count=128 # destroy already formated filesystem 128+0 records Wed Aug 20 18:01:40 2014 Initializing DRBD devices... Source

Using LVM with DRBD LVM primer Using a Logical Volume as a DRBD backing device Configuring a DRBD resource as a Physical Volume Nested LVM configuration with DRBD 12. degr-wfc-timeout 120; ## 2 minutes. } disk { on-io-error detach; } net { # timeout 60; # connect-int 10; # ping-int 10; # max-buffers 2048; # max-epoch-size 2048; } syncer { Both comments and pings are currently closed. success root:~# drbdadm up r0 Do this for all resouces on all nodes. navigate here

After that change the copied files to reflect your resources. Best Regards, Plamen Petkov Back to top #2 claman claman Newbie Guests 9 posts Posted 03 October 2011 - 07:18 AM Hi, I'm not so skilled on linux/openfiler, but I think HTH, Felix _______________________________________________ drbd-user mailing list drbd-user [at] lists http://lists.linbit.com/mailman/listinfo/drbd-user mk.spare999 at gmail Mar28,2011,2:49PM Post #3 of 4 (2907 views) Permalink Re: drbd attach failure - (104) Can not open backing device [In

I'm not sure. Anacron run-parts: /etc/cron.daily/amavisd-new exited with return code 1. Integrating DRBD with Heartbeat clusters Heartbeat primer The Heartbeat cluster manager Heartbeat resources Heartbeat resource agents Heartbeat communication channels Heartbeat configuration The ha.cf file The authkeys file Propagating the cluster configuration Software version: 2.11.3 Internode protocol: 2110000 Configuration format: 2110000 OS api version: 20 Export interface: 0 VCS version: (ganeti) version v2.11.3 What distribution are you using?

Contact Us - Advertising Info - Rules - LQ Merchandise - Donations - Contributing Member - LQ Sitemap - Main Menu Linux Forum Android Forum Chrome OS Forum Search LQ Resources: DRBD User Guide (<=8.3): http://www.drbd.org/users-guide-8.3/ DRBD User Guide (>8.3): http://www.drbd.org/users-guide/drbd-users-guide.html Pacemaker (Heartbeat): http://www.clusterlabs.org/ original (old) heartbeat: http://linux-ha.org/wiki/Main_Page -- Main.uwl - 10 May 2012 Edit|Attach|Print version|History: r8http://www.gossamer-threads.com/lists/drbd/users/21195 Join our community today!

According the manual I use the following commands: * [root at app1 drbd.d]# drbdadm create-md r0* md_offset 8480256000 al_offset 8480223232 bm_offset 8479961088 Found LVM2 physical volume signature 8257536 kB data area Having a problem logging in? Now /proc/drbd should look like this: root:~# cat /proc/drbd version: 8.3.9 (api:88/proto:86-95) srcversion: 8925C35502BC976C622CF7A 0: cs:SyncSource ro:Primary/Secondary ds:UpToDate/Inconsistent C r----- ns:409968 nr:0 dw:0 dr:540872 al:0 bm:16 lo:1 pe:279 ua:256 ap:0 ep:1 DRBD-enabled applications 8.

Wed Aug 20 18:02:21 2014 * Hooks Results regards Aug 25, 2014 Project Member #1 [email protected] (No comment was entered for this change.) Status: Accepted Owner: [email protected] Labels: Type-Defect Priority-Medium Next make secondary Host be primary and mount DRBD device ########### on Primary Host ########### [[email protected] ~]# umount /mnt/drbd0 [[email protected] ~]# drbdadm April 24, 2012 Post Categories Apple World (9) Cisco World (6) Cryptography (3) DataBase Management (4) Flight (2) General IT Topics (6) Juniper World (7) Linux Administration (54) Magento (1) Mikrotik template.

Optimizing DRBD performance 15. http://dekovsoft.com/cannot-open/cannot-open-root-device-302.html Wed Aug 20 17:54:42 2014 adding instance instance1 to cluster config Wed Aug 20 17:54:42 2014 - INFO: Waiting for instance instance1 to sync disks Wed Aug 20 17:54:42 2014 - Building, installing and configuring DRBD 3. You may have blasted your LV signatures?

The most important line in ha.cf is the crm yes line, since it tells heartbeat to use the resource manager, most other parameters are not used any more and will be for heartbeat: again copy the appropiate files to files with the name of one of the new nodes: /srv/fai/config/files/etc/ha.d/ha.cf/drbd.sample /srv/fai/config/files/etc/ha.d/authkeys/drbd.sample /srv/fai/config/files/var/lib/heartbeat/crm/cib.xml/drbd.sample after that generate two different(!) uuid-hostkeys for the new nodes Note: drbd.conf originally included just global_common.conf and resources.res. have a peek here DRBD can be understood as "Network-Based RAID1".

Introduction to DRBD 1. Introduction to Linux - A Hands on Guide This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started Integrating DRBD with Red Hat Cluster Suite Red Hat Cluster Suite primer OpenAIS and CMAN CCS Fencing The Resource Group Manager Red Hat Cluster Suite configuration The cluster.conf file Using DRBD

by a partition mapping via kpartx) ganeti leaves lvs it created for drbd volumes.

s(r0) s(r1) n(r0) n(r1) ].......... *************************************************************** DRBD's startup script waits for the peer node(s) to appear. - In case this node was already a degraded cluster before the reboot the timeout Register now! By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. I'm not sure. >> >> I believe you either want to get rid of LVM here, or use an LV as a >> backing device (instead of sda2). >> >> HTH,

According the manual I use the following commands: * [root [at] app drbd.d]# drbdadm create-md r0* md_offset 8480256000 al_offset 8480223232 bm_offset 8479961088 Found LVM2 physical volume signature 8257536 kB data area That helped. Note that registered members see fewer ads, and ContentLink is completely disabled once you log in. Check This Out Please re-enable javascript to access full functionality. 0 Problem with drbd.

Try to find the reason If you start the first node you will get an errormessage like this: --== Thank you for participating in the global usage survey ==-- The server's Configuring SELinux ► 2012 (3) ► October (3) ► 2011 (20) ► October (4) ► July (14) ► May (2) About Me Windows & Linux View my complete profile Awesome Inc. Time to start heartbeat. In any case both nodes will be complaining, that the metadata can't be found and heartbeat will fail to initialize, because it can't fireup drbd.