> From: Mike Belopuhov <m...@belopuhov.com> > Date: Tue, 22 Oct 2013 15:48:22 +0200 > > On 22 October 2013 15:22, Mark Kettenis <mark.kette...@xs4all.nl> wrote: > > Diff below makes bioctl(4) print the cache policy for that's currently > > in effect for RAID volumes. It only prints the state (WB for > > write-back, WT for write-through) if the RAID controller driver fills > > in the details in response to a BIOCVOL ioctl. This diff adds such > > support to mfi(4). > > > > # bioctl mfi0 > > Volume Status Size Device > > mfi0 0 Online 72746008576 sd0 RAID1 WB > > 0 Online 73407820800 1:0.0 noencl <HITACHI > > HUS153073VLS300 A598> > > 1 Online 73407820800 1:1.0 noencl <HITACHI > > HUS153073VLS300 A598> > > > > ok? > > > > > > mpii specs do not use terms write-back or write-through, they rather > talk about write cache being enabled or disabled. they obviously > mean write-back cache. i believe for the bioctl user it's more > important to know if actual writes are deferred or not, so i would > rather say "Write Cache Enabled/Disabled" or "Write Cache On/Off" or > something similar rather then if it's WB or WT. oterwise people will > have to look in the man page for what WB or WT stands for and then > search wikipedia for what does it mean.. > > just my 2 cents.
I committed the diff as-is. As dlg@ pointed out things are a bit more complicated than just a binary on/off. At least the mechanism is there now, and it is easy to change the way bioctl(8) presents this information to the user.
