how well does zfs work with hot-swappable drives?
any any SSD caching or otherwise going into the new German Server?
Generally no issues. Pulling a hot drive will cause it to be failed. Pulling a failed drive will do nothing. And once the drive is replaced, it's usually just "zpool replace <pool> <device>"
(of course this assumes you're using something that can recover from a failed drive, eg mirror)
I assume growing a pool is pretty seamless as well? just keep adding drives ?
mnathani: it'd be crazy not to have SSD at least for ZIL with ZFS
growing pools with zfs isn't great
I don't think you can grow a zpool
(but I could be wrong)
it has no auto-balancing
brycec: you can
well
you can add another pair of disks
or another raidz or such
and use it as another vdev as part of the pool
Yeah, it's something a bit unconventional.
you can also mix raidz and mirrors
@google zil zfs
5,670 total results returned for 'zil zfs', here's 3
ZiL in ZFS. How does it work? | The FreeBSD Forums (https://forums.freebsd.org/threads/26212/) Hello! Please tell me how does ZiL work in ZFS? L2ARC works as a READ cache  layer in-between main memory and Disk Storage Pool.
ZFS - Wikipedia, the free encyclopedia (https://en.wikipedia.org/wiki/ZFS) ZFS uses different layers of disk cache to speed ... Device, and it is used by the  ZIL (ZFS intent log).
Chapter 9. ZFS (https://www.freebsd.org/doc/faq/all-about-zfs.html) The ZIL ( ZFS intent log) is a write log used to implement posix write commitment  semantics across crashes. Normally writes are bundled up into transaction ...
well if you have 4 disks with mirrors, you'd usually have two vdevs
have you done zfs in production before?
yeah
on linux or fbsd?
linux and opensolaris
gotcha
Zil gives most of the benefit of bbwc
But streaming loads will bypass
is this server a response to JC_Denton's request for a managed backup service running on ZFS ? :-)
No
Ubuntu host with KVM virtual machines?
yeah
any livemigration capabilities?
no?
what do you mean?
the kvm equivalent of vmotion
moving a machine from one physical box to another with no downtime
that would require SAN, maybe in the future :)
s/machine/virtual machine
<mnathani> moving a virtual machine from one physical box to another with no downtime
are you guys working on website additions to cover the German offerings?
perhaps payment in Euros or something
Today I learned: There is a place called China in Michigan, USA