This appears to be specific to RAIDZ though, which I think I'm not using. I'm just using mirrors at the moment.
I'm incidentally currently working through the logistics for a potential upgrade and am seriously torn about whether to switch over to RAIDZ2 or stick with a couple of independent mirror pools. The "all disks thrash on rebuild after failure" property of RAIDZ2 has me scrambling for the sequential simplicity of mirrors, but... giant contiguous datasets... hmmmmmm...
This appears to be specific to RAIDZ though, which I think I'm not using. I'm just using mirrors at the moment.
I'm incidentally currently working through the logistics for a potential upgrade and am seriously torn about whether to switch over to RAIDZ2 or stick with a couple of independent mirror pools. The "all disks thrash on rebuild after failure" property of RAIDZ2 has me scrambling for the sequential simplicity of mirrors, but... giant contiguous datasets... hmmmmmm...