You have a look which device path is used when mounting your both file systems (using mount). Than you can have a look at the major and minor device number of these devices (using ls -la). If these devices are using the same major/minor combination the kernel assumes these devices the be the same. This would show the effects you mentioned. ls -la /dev/mapper/* brw------- 1 root root 253, 3 Jun 21 16:09 /dev/mapper/rootvg-homlv brw------- 1 root root 253, 2 Jun 21 16:09 /dev/mapper/rootvg-optlv in this case rootvg-homlv has major 253 and minor 3, while rootvg-optlv has major 253 and minor 2. best regards Fabian Herschel Suleyman Kutlu schrieb: > Hello all, > > > I have an AMD-64 machine running SuSE 9.2. I have one SATA disk (for > now, will add another later on) and a VG on it. I have created some LVs. > > Sometimes later, I realized that when I mount an LV (say lv_a) I see > the directory structure of another LV (say lv_b). If I issue a df -k, > I see a wrong size for lv_a, it is the size of lv_b. But in lvdisplay > output, the size for lv_a is correct. > > The file systems on lv_a and lv_b is JFS. > > /mnt is mounted as lv_b > /mnt2 is mounted as lv_a but has contents of lv_b > > > I thought that, filesystem structure is corrupted and started to work > on some filesystem level utilities, but later I see that, > another filesystem pair also got the same problem. > > > So I think it is a problem in device-mapper level, not the filesystem > level. > > What can be the possible works to get what is wrong and how to fix ? > If the corruption is at filesystem level, do you have any experience > on JFS-utils ? I just want to see what was stored in lv_a, what I lost > in lv_a... > > > I am new at device-mapper, I don't have enough experience on it and I > do not want to loose everything while there is something that can be > recovered... > > Any help is appreciated. > > Thanks and regards.. > > * Suleyman Kutlu > * mailto: suleyman.kutlu@gmail.com > > _______________________________________________ > 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/
