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Download USER'S GUIDE - QNX Software Systems
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Filesystem limits 2005, QNX Software Systems Filesystem size Depends on the FAT format: ¯ for FAT12, it’s 4084 clusters (largest cluster is 32K hence 128M) ¯ for FAT16, it’s 65524 clusters (thus 2G) ¯ for FAT32 you get access to 268435444 clusters (which is 8T) Limited by the disk driver and io-blk. Disk size These filesystems don’t really support permissions, but they can emulate them. CD-ROM (ISO9660) filesystem The limits for CD-ROM (ISO9660) filesystems include: Filename length 32 bytes for basic ISO9660, 128 for Joliet, 255 for Rockridge. Pathname length 1024 bytes. Disk size This filesystem also uses a 32-bit (2G − 1) format. We don’t allow the creation of anything via fs-cd.so; it’s read-only. Any limits would be imposed by the tools used to make the image (which hopefully would be a subset of ISO9660). Disk size is also limited by the disk driver and io-blk. NFS2 and NFS3 filesystem The limits for NFS2 and NFS3 filesystems include: Filename length 255 bytes. 470 Chapter 21 ¯ Understanding System Limits October 6, 2005
