I talked about the ZFS scrub feature a few months back. In the latest Solaris 10 update the developers added additional scrub statistics, which are quite handy for figuring out throughout and estimated completion times: $ zpool scrub rpool $ zpool status -v pool: rpool state: ONLINE scan: scrub in progress since Tue Dec 6 [...]
There have been a number of articles written over the past few years that talk about how silent data corruption can occur due to faulty hardware, solar flares as well as software defects. I’ve seen some oddities in the past that would probably fall into these categories, but without sufficient time to dig deep it’s [...]
I just saw the following ARC case fly by, and this will be a welcome addition to the ZFS file system!: OVERVIEW: Uncooperative or deceptive hardware, combined with power failures or sudden lack of access to devices, can result in zpools without redundancy being non-importable. ZFS’ copy-on-write and Merkle tree properties will sometimes allow us [...]
I just saw the following putback notice come over the wire: Author: Adam Leventhal Repository: /hg/onnv/onnv-gate Latest revision: 17811c723fb4f9fce50616cb740a92c8f6f97651 Total changesets: 1 Log message: 6854612 triple-parity RAID-Z This is pretty sweet, and with the introduction of 2TB+ drives, using multiple parity drives will become essential to ensuring that your data is safe when a drive [...]
I was playing around with ZFS root a week or two back, and wanted to be able to create the ZFS root pool and associated file systems (dump device, swap, /var) through jumpstart. To install to a ZFS root pool, you can add the “pool” directive to your client profile: pool rpool auto 4g 4g [...]
One of the nice features of ZFS is the ability to take file system snapshots, which you can then use to recover perviously deleted data. In recent opensolaris and Nevada builds, there are several auto-snapshot services that can be used to schedule hourly, daily, weekly and monthly snapshots: $ svcs -a | grep auto-snapshot disabled [...]
