On 05/01/2022 00:43, Dmitri Maziuk wrote:
On 1/3/2022 8:05 PM, Gary R. Schmidt wrote:
On 04/01/2022 05:47, David Brodbeck wrote:
...
I could see iSCSI maybe working better, but I haven't tried it.
iSCSI is not the same as NFS (or SMB), it shares a "raw device" which
the mounting system then formats and uses, the device can't be shared
on/from the iSCSI server.
I think he means if you use an iSCSI device for your storage you should
avoid most of the shared-FS problems: it's not like you *need* your
volumes shared to multiple servers.
But if your network is dodgy, then iSCSI may be just as dodgy as NFS.
(iSCSI over FC, however, works very well.)
> ... (Well, it can be shared by simulating
> sneaker-net, mount-fiddle about-umount-mount elsewhere-fiddle
> about-umount-etc.)
In theory ZFS will let you make a mirror from a local drive and an iSCSI
device, and then you could restart each half in "degraded" state...
Not theoretical - I have done exactly this when moving Solaris systems
to new hardware, both SPARC[1] and x64. Once you've done the hard yakka
getting it to boot and run on the new box it Just Works(TM).
Cheers,
Gary B-)
1 - Okay, it didn't work well going from the old T-series to the new
S-series, but that was a, "Will it work?", thing, not an, "It must
work", thing. The S2 is going to be a completely new system, someday,
RSN, in the fullness of time... ;-)
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