gpfs:gpfs_sizing
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| Both sides previous revision Previous revision Next revision | Previous revision | ||
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gpfs:gpfs_sizing [2021/04/30 22:44] manu |
gpfs:gpfs_sizing [2024/06/21 17:05] (current) manu [NSD access] |
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| ===== Filesystem Block size, best practice ===== | ===== Filesystem Block size, best practice ===== | ||
| + | |||
| + | Typically, metadata is between 1 and 5% of the filesystem space, but this can vary. | ||
| Depending on usage, you can have different **block size** | Depending on usage, you can have different **block size** | ||
| Line 57: | Line 59: | ||
| Such a configuration could cause a overload situation on the affected server. | Such a configuration could cause a overload situation on the affected server. | ||
| - | The NSD server sequence can be adjusted via command 'mmchnsd' ( see below ): | + | The NSD server sequence can be adjusted online via command **mmchnsd** ( see below ): |
| https://www.ibm.com/docs/en/spectrum-scale/5.0.5?topic=disks-changing-your-nsd-configuration | https://www.ibm.com/docs/en/spectrum-scale/5.0.5?topic=disks-changing-your-nsd-configuration | ||
| - | <cli> | + | Ex: |
| + | <cli prompt='#'> | ||
| + | # mmchnsd "data_nsd043:gpfs03.gpfsint.labo,gpfs04.gpfsint.labo,gpfs01.gpfsint.labo,gpfs02.gpfsint.labo" | ||
| + | </cli> | ||
| + | |||
| + | Maybe easier with a description file | ||
| + | |||
| + | <cli prompt='#'> | ||
| # mmlsnsd -X | # mmlsnsd -X | ||
| File system Disk name NSD volume ID NSD servers | File system Disk name NSD volume ID NSD servers | ||
gpfs/gpfs_sizing.1619815478.txt.gz · Last modified: 2021/04/30 22:44 by manu
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