NAME<\/a> xfs_bmap \u2212 print block mapping for an XFS file<\/p>\n xfs_bmap<\/b> [ \u2212adelpv<\/b> ] [ \u2212n<\/b> num_extents<\/i> ] file<\/i> xfs_bmap<\/b> prints the map of disk blocks used by files in an XFS filesystem. The map lists each extent<\/i> used by the file, as well as regions in the file that do not have any corresponding blocks (holes). Each line of the listings takes the following form:<\/p>\n extent<\/i>: [startoffset<\/i>..endoffset<\/i>]: startblock<\/i>..endblock<\/i><\/p>\n Holes are marked by replacing the startblock<\/i>..endblock<\/i> with hole<\/i>. All the file offsets and disk blocks are in units of 512-byte blocks, no matter what the filesystem\u2019s block size is.<\/p>\n \u2212a<\/b><\/p>\n<\/td>\n If this option is specified, information about the file\u2019s attribute fork is printed instead of the default data fork.<\/p>\n<\/td>\n<\/tr>\n \u2212e<\/b><\/p>\n<\/td>\n If this option is used, xfs_bmap<\/b> obtains all delayed allocation extents, and does not flush dirty pages to disk before querying extent data. With the \u2212v<\/b> option, the flags<\/i> column will show which extents have not yet been allocated.<\/p>\n<\/td>\n<\/tr>\n \u2212l<\/b><\/p>\n<\/td>\n If this option is used, then<\/p>\n<\/td>\n<\/tr>\n<\/table>\n <nblocks<\/i>> blocks<\/p>\n will be appended to each line. nblocks<\/i> is the length of the extent described on the line in units of 512-byte blocks.<\/p>\n This flag has no effect if the \u2212v<\/b> option is used.<\/p>\n \u2212n<\/b> num_extents<\/i><\/p>\n If this option is given, xfs_bmap<\/b> will display at most num_extents<\/i> extents. In the absence of \u2212n<\/b>, xfs_bmap<\/b> will display all extents in the file.<\/p>\n
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