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| 15:07.15 | bregalad | ~napoleon eightyeight |
| 15:07.19 | infobot | ACTION makes eightyeight his secret service captain |
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| 15:44.45 | jalbretsen | I have a friend looking for a freelance iPhone / Android app developer. If you are interested, PM me. |
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| 20:06.15 | Tod-Work | Anyone played with freenas? I'm thinking of doing a build of it with plex for delivering to raspberry pis (as a replacement for my current Windows NAS) |
| 20:06.28 | Tod-Work | thinks specifically of eightyeight given the ZFS treatment |
| 20:06.58 | eightyeight | i haven't done anything with freenas specifically, although i've helped support a number of freenas users on twitter |
| 20:07.26 | eightyeight | mostly, it's FreeBSD with ZFS and a pretty GUI (that seems really well put together actually) |
| 20:10.02 | Tod-Work | yeah, so I hear. OK then. My coworker says it needs a good chunk of RAM. That's cheap, so cool. |
| 20:10.27 | jlp_znc | <PROTECTED> |
| 20:10.32 | Tod-Work | eightyeight, if I threw three disks at it and wanted to add to it later, is ZFS going to make that easy? |
| 20:10.49 | Tod-Work | jlp_znc, I'm all ears if you have caveats or whatnot |
| 20:11.09 | jlp_znc | be careful with turning on dedup. in face, don't. compression is fine, turn that on all you want. |
| 20:11.36 | bregalad | I think NASes are more desirable with unthrown disks |
| 20:11.52 | Tod-Work | It's mostly going to handle video files and maybe do network backups much later. Maybe. I don't think dedup is going to be useful. |
| 20:11.56 | jlp_znc | adding disks is simple, but it really likes them to be of similar sizes (you can always partition them to make that so) |
| 20:12.05 | Tod-Work | bregalad, you need to get SSDs? =cP |
| 20:12.19 | Tod-Work | Yeah, they'll all be 4TB drives I think |
| 20:12.36 | jlp_znc | if you have an ssd, you can use it for the 2nd tier cache and for the write cache... it will really improve performance that way. |
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| 20:13.33 | eightyeight | don't dedup |
| 20:13.46 | eightyeight | it's rarely apropriate to do so. very rarely. |
| 20:14.00 | eightyeight | Tod-Work: what is the current ZFS pool like? pastebin? |
| 20:14.07 | jlp_znc | I thought it would be a good choice for a raft of VM images that only differed slightly. |
| 20:14.11 | Tod-Work | I don't have one |
| 20:14.15 | Tod-Work | it will be from scratch |
| 20:14.24 | jlp_znc | everything worked well until we added the eleventh client, then performance fell off a cliff. |
| 20:14.28 | eightyeight | what are you initially planning? |
| 20:14.37 | eightyeight | jlp_znc: yeah. that's usually the case. |
| 20:14.47 | jlp_znc | so unless you really know that you need dedup, and you are aware of the heavy ram penalties of it, just leave it off. |
| 20:14.54 | eightyeight | imo, enable compression pool-wide, stay away from dedup |
| 20:15.07 | Tod-Work | 4 x 4TB drives, all in one big RAID 5 until I can add another two drives and make it a RAID 6 |
| 20:15.15 | jlp_znc | in fact, TrueNAS now requires a special key to turn it on. you have to talk to them so they can tell you what not to do before you can turn it on. |
| 20:15.37 | eightyeight | Tod-Work: that would require a format to switch raid levels |
| 20:15.45 | Tod-Work | =c( |
| 20:16.04 | eightyeight | Tod-Work: also, unless you know you need the space, i would do raid-1+0 with your four disks |
| 20:16.06 | Tod-Work | RAID 5 -> 6 is just adding another parity drive. It really should be smarter about that |
| 20:16.18 | eightyeight | i'm not sure that's doable |
| 20:16.21 | Tod-Work | I will need at least 12TB shortly |
| 20:16.22 | eightyeight | double-checks |
| 20:17.08 | jlp_znc | you can not convert from raid z1 to raid z2 on the fly. sadly. |
| 20:17.31 | eightyeight | yeah. i'm fairly confident that's not possible currently |
| 20:17.57 | Tod-Work | sad day |
| 20:18.14 | Tod-Work | maybe I'll start with 8 on RAID 6 and just add a drive when I hit that in a couple months |
| 20:18.48 | jlp_znc | raidz2 requires five disks, I think. |
| 20:19.09 | eightyeight | 45 |
| 20:19.11 | eightyeight | er |
| 20:19.13 | eightyeight | 4 |
| 20:19.27 | eightyeight | 3 for raidz1, 4 for raidz2, and 5 for raidz3 |
| 20:20.03 | jlp_znc | did that change? I though it was 5 for z2 and 8 for z3 |
| 20:20.15 | bregalad | just get 100 disks, then you won't have to decide |
| 20:20.30 | eightyeight | you're probably thinking of the myth that for "best practice", your pool should be n^2 + parity disks |
| 20:20.37 | eightyeight | er 2^n+parity |
| 20:21.43 | eightyeight | simple enough to test |
| 20:23.45 | jlp_znc | documentation says "start a raidz2 at 4, 6, or 10 disks" |
| 20:24.37 | eightyeight | http://ae7.st/p/7af |
| 20:24.51 | eightyeight | gah. missed a command. |
| 20:25.15 | eightyeight | ... and it disappeared |
| 20:25.32 | eightyeight | the docs are just a suggestion |
| 20:25.48 | eightyeight | for the min, you need 2 disks to stripe + parity |
| 20:25.59 | eightyeight | if you want to talk about performance, that's different |
| 20:26.06 | jlp_znc | This paste has either expired or doesn't exist! |
| 20:26.36 | eightyeight | yeah |
| 20:26.39 | eightyeight | retries |
| 20:29.01 | jlp_znc | I would say set up your four disks as two mirrored vdevs in a single zpool. when you add your other two drives, mirror them into a new vdev and add it to the pool. |
| 20:29.07 | Tod-Work | is hoping to avoid ever having to use the commandline on this thing |
| 20:29.16 | Tod-Work | the zfs bits I mean |
| 20:29.26 | jlp_znc | you shouldn't have to |
| 20:29.45 | eightyeight | something is wrong with my pastebin. wtf. |
| 20:29.53 | Tod-Work | and no, absolutely not mirroring them. If I get to 8 or 10 drives I'll be down 4-5 drives. That's just dumb. |
| 20:30.27 | Tod-Work | Granted it's the difference between 16TB and 24TB, but still |
| 20:31.07 | jlp_znc | mirroring gives you double the read performance... on a media server that can be significant |
| 20:35.30 | Tod-Work | At most we're talking about 3 5mbit streams. If a single drive can't cover that, what the hell is it attached to? |
| 20:35.47 | Tod-Work | In most cases the bottleneck will be the network |
| 20:35.55 | eightyeight | uses another pastebin for now |
| 20:36.36 | eightyeight | jlp_znc: https://paste.debian.net/314875/ |
| 20:37.37 | Tod-Work | simple and straightforward, I likeit |
| 20:41.43 | eightyeight | i like that ZFS supports building pools out of preallocated files |
| 20:41.49 | eightyeight | makes testing scripts and breeze |
| 20:42.03 | jlp_znc | how flakey do you think your drives are? |
| 20:42.10 | jlp_znc | very nice, 88. |
| 20:43.22 | Tod-Work | Doesn't matter unless I'm going to lose more than two at a time |
| 20:43.39 | Tod-Work | this does happen, but it also isn't mission critical if it does |
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