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| Who | What | When | |
|---|---|---|---|
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| mnathani | how well does zfs work with hot-swappable drives?
any any SSD caching or otherwise going into the new German Server? | [22:11] | |
| 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) | [22:12] | |
| mnathani | I assume growing a pool is pretty seamless as well? just keep adding drives ? | [22:13] | |
| mercutio | mnathani: it'd be crazy not to have SSD at least for ZIL with ZFS
growing pools with zfs isn't great | [22:13] | |
| brycec | I don't think you can grow a zpool
(but I could be wrong) | [22:14] | |
| 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 | [22:14] | |
| brycec | Yeah, it's something a bit unconventional. | [22:14] | |
| mercutio | you can also mix raidz and mirrors | [22:14] | |
| mnathani | @google zil zfs | [22:15] | |
| BryceBot | 5,670 total results returned for 'zil zfs', here's 3
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 ... | [22:15] | |
| mercutio | well if you have 4 disks with mirrors, you'd usually have two vdevs | [22:15] | |
| mnathani | have you done zfs in production before? | [22:15] | |
| mercutio | yeah | [22:15] | |
| mnathani | on linux or fbsd? | [22:15] | |
| mercutio | linux and opensolaris | [22:16] | |
| mnathani | gotcha | [22:16] | |
| mercutio | Zil gives most of the benefit of bbwc
But streaming loads will bypass | [22:17] | |
| mnathani | is this server a response to JC_Denton's request for a managed backup service running on ZFS ? :-) | [22:17] | |
| mercutio | No | [22:18] | |
| mnathani | Ubuntu host with KVM virtual machines? | [22:28] | |
| mercutio | yeah | [22:31] | |
| mnathani | any livemigration capabilities? | [22:31] | |
| mercutio | no?
what do you mean? | [22:32] | |
| mnathani | the kvm equivalent of vmotion
moving a machine from one physical box to another with no downtime | [22:32] | |
| mercutio | that would require SAN, maybe in the future :) | [22:32] | |
| mnathani | s/machine/virtual machine | [22:32] | |
| BryceBot | <mnathani> moving a virtual machine from one physical box to another with no downtime | [22:32] | |
| mnathani | are you guys working on website additions to cover the German offerings?
perhaps payment in Euros or something | [22:33] | |
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| Today I learned: There is a place called China in Michigan, USA | [23:21] | ||
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