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mordac_ is now known as mordac mnathani: how well does zfs work with hot-swappable drives?
any any SSD caching or otherwise going into the new German Server? brycec: 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) mnathani: I assume growing a pool is pretty seamless as well? just keep adding drives ? mercutio: mnathani: it'd be crazy not to have SSD at least for ZIL with ZFS
growing pools with zfs isn't great brycec: I don't think you can grow a zpool
(but I could be wrong) mercutio: 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 brycec: Yeah, it's something a bit unconventional. mercutio: you can also mix raidz and mirrors mnathani: @google zil zfs BryceBot: 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 ... mercutio: well if you have 4 disks with mirrors, you'd usually have two vdevs mnathani: have you done zfs in production before? mercutio: yeah mnathani: on linux or fbsd? mercutio: linux and opensolaris mnathani: gotcha mercutio: Zil gives most of the benefit of bbwc
But streaming loads will bypass mnathani: is this server a response to JC_Denton's request for a managed backup service running on ZFS ? :-) mercutio: No mnathani: Ubuntu host with KVM virtual machines? mercutio: yeah mnathani: any livemigration capabilities? mercutio: no?
what do you mean? mnathani: the kvm equivalent of vmotion
moving a machine from one physical box to another with no downtime mercutio: that would require SAN, maybe in the future :) mnathani: s/machine/virtual machine BryceBot: <mnathani> moving a virtual machine from one physical box to another with no downtime mnathani: 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