Wandering Thoughts archives

2018-10-24: You can sort of use zdb as a substitute for a proper ZFS fsck
2018-10-23: ZFS scrubs check (much) less than you probably think they do
2018-09-14: How you migrate ZFS filesystems matters
2018-09-04: ZFS quietly discards all-zero blocks, but only sometimes
2018-08-26: A little bit of the one-time MacOS version still lingers in ZFS
How ZFS maintains file type information in directories
2018-07-29: Our ZFS fileservers aren't happy when you do NFS writes to a full filesystem
2018-07-17: Some things on Illumos NFS export permissions
2018-07-15: Understanding ZFS System Attributes
2018-06-29: How ZFS makes things like 'zfs diff' report filenames efficiently
2018-06-24: What ZFS block pointers are and what's in them
A broad overview of how ZFS is structured on disk
2018-06-22: When you make changes, ZFS updates much less stuff than I thought
2018-06-09: What ZFS messages about 'permanent errors in <0x95>:<0x0>' mean
2018-05-27: ZFS pushes file renamings and other metadata changes to disk quite promptly
2018-05-18: ZFS spare-N spare vdevs in your pool are mirror vdevs
2018-05-02: An interaction of low ZFS recordsize, compression, and advanced format disks
2018-04-23: ZFS's recordsize as an honest way of keeping checksum overhead down
2018-04-22: Thinking about why ZFS only does IO in recordsize blocks, even random IO
2018-03-19: Some exciting ZFS features that are in OmniOS CE's (near) future
2018-03-17: Much better ZFS pool recovery is coming (in open source ZFS)
2018-02-14: Some things about ZFS block allocation and ZFS (file) record sizes
2018-02-04: A surprise in how ZFS grows a file's record size (at least for me)
2018-01-06: What ZFS gang blocks are and why they exist
2018-01-05: Confirming the behavior of file block sizes in ZFS

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