_FIOSATIME - why doesn't zfs support this (assuming I didn't just miss it)? Might be handy for backups.
Could/should zfs support a new ioctl, constrained if needed to files of zero size, that sets an explicit (and fixed) blocksize for a particular file? That might be useful for performance in special cases when one didn't necessarily want to specify (or depend on the specification of perhaps) the attribute at the filesystem level. One could imagine a database that was itself tunable per-file to a similar range of blocksizes, which would almost certainly benefit if it used those sizes for the corresponding files. Additional capabilities that might be desirable: setting the blocksize to zero to let the system return to default behavior for a file; being able to discover the file's blocksize (does fstat() report this?) as well as whether it was fixed at the filesystem level, at the file level, or in default state. Wasn't there some work going on to add real per-user (and maybe per-group) quotas, so one doesn't necessarily need to be sharing or automounting thousands of individual filesystems (slow)? Haven't heard anything lately though... This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
