Hi, None of your DRBD devices seems to be in primary mode, so you probably cannot access them at all. (You could try reading the first block of one of your DRBD devices, e.g. "dd if=/dev/raidssd/drbd0 bs=512 count=1", which should also fail.) You should be able to promote the ressources using "drbdadm primary xxx" with "xxx" being the name of the ressource. (I think you have to promote them one by one.) See http://drbd.linbit.com/users-guide-8.4/s-switch-resource-roles.html for an explanation. Normally, devices should be promoted when DRBD is started. Check if "become-primary-on" is set in your ressource configuration (e.g. /etc/drbd.d/foo.res). If you use some cluster management software, it should handle promotion and demotion of DRBD devices. Kind regards, Christian ------------------------------------------------------------ Deriva GmbH Financial IT and Consulting Christian Schröder Geschäftsführer Hans-Böckler-Straße 2 | D-37079 Göttingen Tel: +49 (0)551 489 500-42 Fax: +49 (0)551 489 500-91 http://www.deriva.de Amtsgericht Göttingen | HRB 3240 Geschäftsführer: Christian Schröder -----Ursprüngliche Nachricht----- Von: linux-lvm-bounces@redhat.com [mailto:linux-lvm-bounces@redhat.com] Im Auftrag von Christophe Gesendet: Freitag, 27. März 2015 12:01 An: linux-lvm@redhat.com Betreff: LVM crashed, no superblock on dozens of LVs even after vgcfgrestore Hi, I use LVM on Debian Wheezy, kernel 3.2.0-4-amd64, with several dozens of LVs. Every attempt of mounting any of these LVs says : can't read superblock I can't imagine than each of all theses LVs were corrupted at the same time. There should be a common problem for that. But which one ??? FYI I'm using LVM -on-DRBD-on-LVM. DBRD seems to be fine. pvs PV VG Fmt Attr PSize PFree /dev/raidssd/drbd0 miroirtest lvm2 a-- 124,99g 9,99g /dev/raidssd/drbd1 miroir1 lvm2 a-- 899,97g 0 /dev/raidssd/drbd2 miroir2 lvm2 a-- 899,97g 0 /dev/raidssd/drbd3 miroir1 lvm2 a-- 899,97g 0 /dev/raidssd/drbd4 miroir2 lvm2 a-- 899,97g 9,99g /dev/raidssd/drbd5 miroir1 lvm2 a-- 929,97g 0 /dev/raidssd/drbd6 miroir2 lvm2 a-- 929,97g 1,70g /dev/raidssd/drbd7 miroir1 lvm2 a-- 929,97g 17,88g /dev/raidssd/drbd8 miroir2 lvm2 a-- 935,96g 157,64g /dev/sda raidssd lvm2 a-- 3,64t 0 /dev/sdb raidssd lvm2 a-- 3,64t 0 cat /proc/drbd version: 8.3.11 (api:88/proto:86-96) srcversion: 41C52C8CD882E47FB5AF767 0: cs:Connected ro:Secondary/Primary ds:UpToDate/UpToDate A r----- ns:0 nr:0 dw:0 dr:0 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:d oos:0 1: cs:Connected ro:Secondary/Primary ds:UpToDate/UpToDate A r----- ns:0 nr:10990235 dw:10990235 dr:0 al:0 bm:178 lo:0 pe:0 ua:0 ap:0 ep:1 wo:d oos:0 2: cs:Connected ro:Secondary/Secondary ds:UpToDate/UpToDate A r----- ns:0 nr:0 dw:0 dr:0 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:d oos:0 3: cs:Connected ro:Secondary/Primary ds:UpToDate/UpToDate A r----- ns:0 nr:21387 dw:21387 dr:0 al:0 bm:6 lo:0 pe:0 ua:0 ap:0 ep:1 wo:d oos:0 4: cs:Connected ro:Secondary/Secondary ds:UpToDate/UpToDate A r----- ns:0 nr:0 dw:0 dr:0 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:d oos:0 5: cs:Connected ro:Secondary/Primary ds:UpToDate/UpToDate A r----- ns:0 nr:2648 dw:2648 dr:0 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:d oos:0 6: cs:Connected ro:Secondary/Secondary ds:UpToDate/UpToDate A r----- ns:0 nr:0 dw:0 dr:0 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:d oos:0 7: cs:Connected ro:Secondary/Primary ds:UpToDate/UpToDate A r----- ns:0 nr:59829829 dw:59829829 dr:0 al:0 bm:93 lo:0 pe:0 ua:0 ap:0 ep:1 wo:d oos:0 8: cs:Connected ro:Secondary/Secondary ds:UpToDate/UpToDate A r----- ns:0 nr:0 dw:0 dr:0 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:d oos:0 There was no error about that in the system logs. Any idea about that ? Regards, -- Christophe _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/ _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
