问题
- How to extract a metadata dump from a XFS filesystem?
环境
- Red Hat Enterprise Linux (RHEL) 5
- Red Hat Enterprise Linux (RHEL) 6
- Red Hat Enterprise Linux (RHEL) 7
- xfsprogs
决议
Umount the filesystem before extracting the metadata dump:
# umount /path/to/mountpoint
Run the following command replacing /dev/<device> per the proper device name:
# xfs_metadump -gwo /dev/<device> - | bzip2 > /path/to/xfs_metadump_<device>.dmp.bz2
Upload the file to the support case, or to the Dropbox FTP.
根源
The dump extracted contains the filesystem metadata structure (not user data) and it is used by Support Engineering to identify potential bugs.

本文介绍如何在Red Hat Enterprise Linux环境下从XFS文件系统中提取元数据转储,包括卸载文件系统和使用xfs_metadump工具的过程。此转储包含文件系统元数据结构,用于支持工程识别潜在的bug。
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