"Linux bad superblock on /dev/mapper/VolGroup-lv_root"

Post #303005938 by MadeInGermany on Wednesday 25th of October 2017 02:30:59 AM

Instead of fdisk -l can you use
Code:
parted -l

?
 

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THIN_DUMP(8)						      System Manager's Manual						      THIN_DUMP(8)

NAME
thin_dump - dump thin provisioning metadata from device or file to standard output SYNOPSIS
thin_dump [options] {device|file} DESCRIPTION
thin_dump dumps binary thin provisioning metadata (optionally from alternate block; see option --metadata-snap) created by the device-map- per thin provisioning target on a device or file to standard output for analysis or postprocessing in either XML or human readable format. XML formated metadata can be fed into thin_restore (see thin_restore(8)) in order to put it back onto a metadata device (to process by the device-mapper target) or file. -f, --format {xml|human_readable} Print output in XML or human readable format. -r, --repair Repair the metadata whilst dumping it. -m, --metadata_snap [block#] Dump metadata snapshot created by device-mapper thin provisioning target. If block is not provided, access the default metadata snapshot created by the thin provisioning device-mapper target, else try the one at block#. See the thin provisioning target documentation on how to create or release a metadata snapshot and retrieve the block number from the kernel. -h, --help Print help and exit. -V, --version Output version information and exit. EXAMPLES
Dumps the thin provisioning metadata on logical volume /dev/vg/metadata to standard output in human readable format: thin_dump -f human_redable /dev/vg/metadata Dumps the thin provisioning metadata on logical volume /dev/vg/metadata to standard output in XML format: thin_dump /dev/vg/metadata Dumps the thin provisioning metadata snapshot on logical volume /dev/vg/metadata to standard output in human readable format (not process- able by thin_restore(8) ): thin_dump --format human_readable --metadata-snap /dev/vg/metadata DIAGNOSTICS
thin_dump returns an exit code of 0 for success or 1 for error. SEE ALSO
thin_check(8) thin_repair(8) thin_restore(8) thin_rmap(8) thin_metadata_size(8) AUTHOR
Joe Thornber <ejt@redhat.com> Heinz Mauelshagen <HeinzM@RedHat.com> Red Hat, Inc. Thin Provisioning Tools THIN_DUMP(8)

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