Hello ZFS guru's on the list :) I started ZFS approx 1.something years ago and I'm following the discussions here for some time now. What confused my all the time is the different parameters and ZFS tunables and how they affect data integrity and availability.
Now I took some time and tried to "visualize" how sync / async I/O handling in ZFS is done, taking the different parameters like zfs_immediate_write_sz into account. I also tried to integrate the latest ZIL related PS ARC's into the picture (logbias in 122 and zil synchronicity in 140). The result of this is the image at http://www.storageconcepts.de/fileadmin/StorageConcept_Data/images/ZFS_IO_Explained.pdf. This pdf tries to give a "high level" overview of how ZFS I/O is handled. However as I say - I'm with ZFS for more then 1 year only, so I'm probably missing something. It would be great if some of the ZFS guys here could comment on the graphics and provide feedback if the things shown in the PDF are correct. Thank you, Robert -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
