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When a 'dmstats create --filemap' operation fails (e.g. during open(2), close(2), or dm_stats_create_regions_from_fd()), use the canonical version of the path. This avoids cryptic/confusing error messages when symbolic links exist in the path argument given: # findmnt /var/lib/libvirt/images -otarget,source TARGET SOURCE /var/lib/libvirt/images /dev/mapper/vg_hex-lv_images # readlink /var/lib/libvirt/images/my.img /boot/my.img # dmstats create --filemap /var/lib/libvirt/images/my.img Cannot map file: not a device-mapper device. Could not create regions from file /var/lib/libvirt/images/my.img Command failed Using the canonical path the error is immediately obvious: # dmstats create --filemap /var/lib/libvirt/images/my.img Cannot map file: not a device-mapper device. Could not create regions from file /boot/my.img Command failed
This tree contains the LVM2 and device-mapper tools and libraries. For more information about LVM2 read the changelog in the WHATS_NEW file. Installation instructions are in INSTALL. There is no warranty - see COPYING and COPYING.LIB. Tarballs are available from: ftp://sources.redhat.com/pub/lvm2/ The source code is stored in git: http://git.fedorahosted.org/git/lvm2.git git clone git://git.fedorahosted.org/git/lvm2.git Mailing list for general discussion related to LVM2: linux-lvm@redhat.com Subscribe from https://www.redhat.com/mailman/listinfo/linux-lvm Mailing lists for LVM2 development, patches and commits: lvm-devel@redhat.com Subscribe from https://www.redhat.com/mailman/listinfo/lvm-devel lvm2-commits@lists.fedorahosted.org (Read-only archive of commits) Subscribe from https://fedorahosted.org/mailman/listinfo/lvm2-commits Mailing list for device-mapper development, including kernel patches and multipath-tools: dm-devel@redhat.com Subscribe from https://www.redhat.com/mailman/listinfo/dm-devel The source code repository used until 7th June 2012 is accessible here: http://sources.redhat.com/cgi-bin/cvsweb.cgi/LVM2/?cvsroot=lvm2.