{ "content": [ { "type": "text", "text": "# xfs_info(8) (man)\n\n**Summary:** xfsinfo - display XFS filesystem geometry information\n\n**Synopsis:** xfsinfo [ -t mtab ] [ mount-point | block-device | file-image ]\nxfsinfo -V\n\n## Flags\n\n| Flag | Long | Arg | Description |\n|------|------|-----|-------------|\n| -t | — | — | /etc/mtab). This is used when working with filesystems mounted without writing to /etc/mtab file - refer to mount(8) for |\n| -V | — | — | |\n\n## Examples\n\n- `Understanding xfsinfo output.`\n- `Suppose one has the following \"xfsinfo /dev/sda\" output:`\n- `meta-data=/dev/pmem0 isize=512 agcount=8, agsize=5974144 blks`\n- `= sectsz=512 attr=2, projid32bit=1`\n- `= crc=1 finobt=1, sparse=1, rmapbt=1`\n- `= reflink=1`\n- `data = bsize=4096 blocks=47793152, imaxpct=25`\n- `= sunit=32 swidth=128 blks`\n- `naming =version 2 bsize=4096 ascii-ci=0, ftype=1`\n- `log =internal log bsize=4096 blocks=23336, version=2`\n- `= sectsz=512 sunit=0 blks, lazy-count=1`\n- `realtime =none extsz=4096 blocks=0, rtextents=0`\n- `Here, the data section of the output indicates \"bsize=4096\", meaning the data block size for`\n- `this filesystem is 4096 bytes. This section also shows \"sunit=32 swidth=128 blks\", which`\n- `means the stripe unit is 32*4096 bytes = 128 kibibytes and the stripe width is 128*4096 bytes`\n- `= 512 kibibytes. A single stripe of this filesystem therefore consists of four stripe units`\n- `(128 blocks / 32 blocks per unit).`\n\n## See Also\n\n- mkfs.xfs(8)\n- md(4)\n- lvm(8)\n- mount(8)\n- xfsinfo(8)\n\n## Section Outline\n\n- **NAME** (2 lines)\n- **SYNOPSIS** (3 lines)\n- **DESCRIPTION** (5 lines)\n- **OPTIONS** (1 lines) — 2 subsections\n - -t (4 lines)\n - -V -V (1 lines)\n- **EXAMPLES** (21 lines)\n- **SEE ALSO** (5 lines)\n\n## Full Content\n\n### NAME\n\nxfsinfo - display XFS filesystem geometry information\n\n### SYNOPSIS\n\nxfsinfo [ -t mtab ] [ mount-point | block-device | file-image ]\nxfsinfo -V\n\n### DESCRIPTION\n\nxfsinfo displays geometry information about an existing XFS filesystem. The mount-point ar‐\ngument is the pathname of a directory where the filesystem is mounted. The block-device or\nfile-image contain a raw XFS filesystem. The existing contents of the filesystem are undis‐\nturbed.\n\n### OPTIONS\n\n#### -t\n\n/etc/mtab). This is used when working with filesystems mounted without writing to\n/etc/mtab file - refer to mount(8) for further details. This option has no effect\nwith the block-device or file-image parameters.\n\n#### -V -V\n\n### EXAMPLES\n\nUnderstanding xfsinfo output.\n\nSuppose one has the following \"xfsinfo /dev/sda\" output:\n\nmeta-data=/dev/pmem0 isize=512 agcount=8, agsize=5974144 blks\n= sectsz=512 attr=2, projid32bit=1\n= crc=1 finobt=1, sparse=1, rmapbt=1\n= reflink=1\ndata = bsize=4096 blocks=47793152, imaxpct=25\n= sunit=32 swidth=128 blks\nnaming =version 2 bsize=4096 ascii-ci=0, ftype=1\nlog =internal log bsize=4096 blocks=23336, version=2\n= sectsz=512 sunit=0 blks, lazy-count=1\nrealtime =none extsz=4096 blocks=0, rtextents=0\n\nHere, the data section of the output indicates \"bsize=4096\", meaning the data block size for\nthis filesystem is 4096 bytes. This section also shows \"sunit=32 swidth=128 blks\", which\nmeans the stripe unit is 32*4096 bytes = 128 kibibytes and the stripe width is 128*4096 bytes\n= 512 kibibytes. A single stripe of this filesystem therefore consists of four stripe units\n(128 blocks / 32 blocks per unit).\n\n### SEE ALSO\n\nmkfs.xfs(8), md(4), lvm(8), mount(8).\n\n\n\nxfsinfo(8)\n\n" } ], "structuredContent": { "command": "xfs_info", "section": "8", "mode": "man", "summary": "xfsinfo - display XFS filesystem geometry information", "synopsis": "xfsinfo [ -t mtab ] [ mount-point | block-device | file-image ]\nxfsinfo -V", "flags": [ { "flag": "-t", "long": null, "arg": null, "description": "/etc/mtab). This is used when working with filesystems mounted without writing to /etc/mtab file - refer to mount(8) for further details. This option has no effect with the block-device or file-image parameters." }, { "flag": "-V", "long": null, "arg": null, "description": "" } ], "examples": [ "Understanding xfsinfo output.", "Suppose one has the following \"xfsinfo /dev/sda\" output:", "meta-data=/dev/pmem0 isize=512 agcount=8, agsize=5974144 blks", "= sectsz=512 attr=2, projid32bit=1", "= crc=1 finobt=1, sparse=1, rmapbt=1", "= reflink=1", "data = bsize=4096 blocks=47793152, imaxpct=25", "= sunit=32 swidth=128 blks", "naming =version 2 bsize=4096 ascii-ci=0, ftype=1", "log =internal log bsize=4096 blocks=23336, version=2", "= sectsz=512 sunit=0 blks, lazy-count=1", "realtime =none extsz=4096 blocks=0, rtextents=0", "Here, the data section of the output indicates \"bsize=4096\", meaning the data block size for", "this filesystem is 4096 bytes. This section also shows \"sunit=32 swidth=128 blks\", which", "means the stripe unit is 32*4096 bytes = 128 kibibytes and the stripe width is 128*4096 bytes", "= 512 kibibytes. A single stripe of this filesystem therefore consists of four stripe units", "(128 blocks / 32 blocks per unit)." ], "see_also": [ { "name": "mkfs.xfs", "section": "8", "url": "https://www.chedong.com/phpMan.php/man/mkfs.xfs/8/json" }, { "name": "md", "section": "4", "url": "https://www.chedong.com/phpMan.php/man/md/4/json" }, { "name": "lvm", "section": "8", "url": "https://www.chedong.com/phpMan.php/man/lvm/8/json" }, { "name": "mount", "section": "8", "url": "https://www.chedong.com/phpMan.php/man/mount/8/json" }, { "name": "xfsinfo", "section": "8", "url": "https://www.chedong.com/phpMan.php/man/xfsinfo/8/json" } ], "section_outline": [ { "name": "NAME", "lines": 2, "subsections": [] }, { "name": "SYNOPSIS", "lines": 3, "subsections": [] }, { "name": "DESCRIPTION", "lines": 5, "subsections": [] }, { "name": "OPTIONS", "lines": 1, "subsections": [ { "name": "-t", "lines": 4, "flag": "-t" }, { "name": "-V -V", "lines": 1, "flag": "-V" } ] }, { "name": "EXAMPLES", "lines": 21, "subsections": [] }, { "name": "SEE ALSO", "lines": 5, "subsections": [] } ] } }