Am 09.11.2010 14:57, schrieb Robert Heller: > At Tue, 09 Nov 2010 14:26:44 +0100 CentOS mailing list<centos at centos.org> wrote: > >> >> every lvm command gives one line with: >> /dev/cdrom: open failed: No medium found ... > Two questions: > > Is your CD-ROM drive an IDE drive (/dev/hd<mumble>)? I'm running C5 as a VMware esxi guest. [root at backup ~]# ll /dev/cdrom lrwxrwxrwx 1 root root 3 3. Nov 13:04 /dev/cdrom -> hda [root at backup ~]# dmesg |grep hda ide0: BM-DMA at 0x10c0-0x10c7, BIOS settings: hda:DMA, hdb:pio hda: VMware Virtual IDE CDROM Drive, ATAPI CD/DVD-ROM drive hda: ATAPI 1X DVD-ROM DVD-R-RAM CD-R/RW drive, 32kB Cache, UDMA(33) > Are any of your LVM volumes on IDE drives? No. > If all of your LVM volumes are on SATA (or SCSI), then you can tell LVM > to skip scanning the IDE devices (/dev/hd*). Set your filter to reject > all IDE drives. I now have filter = [ "r|/dev/hda|", "r|/dev/cdrom|", "a/.*/" ] So far it seems to work... Rainer