jspiros

8 ms·

1.
by jspiros 12y ago
Very cool. I wrote up a spec very similar to this (though I just used the hash itself for the folders, as in HA/HAS/HASH structure [there's probably a name for that scheme]), but haven't gotten around to implementing it.
2.
by jspiros 12y ago
I hate hierarchical filesystems. A lot of my older files, sadly, are stored in "SORT/Sort Me/To be sorted/Old computer/Sort again/Miscellaneous..." and the like. My server has an mlocate index, so I'l
3.
by jspiros 12y ago
My HBA is an LSI 9207-8e ( http://www.lsi.com/products/host-bus-adapters/pages/lsi-sas-... ) and my two SAS expander chassis are NORCO DS-24E ( http://www.norcotek.com/item_detail.php?categoryid=
4.
by jspiros 12y ago
It's not pool-wide, it's vdev-specific. You can add new vdevs with more optimal ashift values. With my pool, half of the vdevs have sub-optimal ashift, the other half are good.
5.
by jspiros 12y ago
Yeah, my oldest vdevs were configured with 512B block size, because that was the default and the ZFS community wasn't being particularly loud about ashift=12 being a good idea until later. As far as I know, there is no easy way to solv
6.
by jspiros 12y ago
If you haven't seen it, you might find it interesting: http://research.google.com/archive/disk_failures.pdf
7.
by jspiros 12y ago
Almost all of the bitrot I see is on the oldest vdevs, which at this point probably contain mostly only old snapshots that are almost never accessed. My oldest vdevs are... 4-5 years old.
8.
by jspiros 12y ago
I'll keep that in mind; I do sometimes find myself with some time to play with things. :)
9.
by jspiros 12y ago
Yes, I should, and someday I will. I'm playing it fast and loose right now. :-p
10.
by jspiros 12y ago
My understanding is that some significant (thousands of bytes) silent corruption is inevitable when you start reaching huge capacities over long-ish periods of time; even cosmic radiation has the potential to flip a few bits here and there
11.
by jspiros 12y ago
Well, if you don't get a kick out of "tweaking and worrying", yes, I definitely recommend FreeNAS. Although I'm confident in my system now, it took a long time to get this way, and I could've saved hundreds of hours
12.
by jspiros 12y ago
As far as I'm concerned, the most identifiable characteristic of Debian is the packaging system, dpkg/apt. I've used FreeBSD occasionally, and that's what I always end up missing about Debian. I did consider going with N
13.
by jspiros 12y ago
I only have 32GB of RAM for ~73TiB under ZFS management, so I have huge SSD cache devices in my pool. The cache devices really lower ZFS' need for RAM, and it works well for me. Before the cache devices, 32GB felt very tight. So, yes,
14.
by jspiros 12y ago
ZFS still protects you from bitrot when compared to ext4 over mdraid. When you get to many terabytes of data, it's almost guaranteed that you're going to lose something to bitrot. In my case, my most recent scrub detected and repa
15.
by jspiros 12y ago
It means I ran a scrub that completed on February 21, 2014 after almost 202 hours, and there were no errors, but there were some corrupt data blocks that were repaired from mirrors, adding up to 1.58MB of data that was repaired. See http:&
16.
by jspiros 12y ago
By "something like this", do you mean ZFS? I am a HUGE fan of ZFS, and I do think that it's worth using in any situation where data integrity is a high priority. As far as ZFS on Linux, it still has its wrinkles. I use it bec
17.
by jspiros 12y ago
As you can see, I do not perform scrubs as often as I should. Until I switched to SAS a year ago, I wasn't able to complete a scrub at all. The scrub you see is one of the few I've been able to complete. I need a week or two where
18.
by jspiros 12y ago
I've got some external hard drives that I rotate in and store off-site but still nearby (down the street) for some data. I also have constant online backups running to various locations/services (Linode, AWS, CrashPlan, Dreamhost,
19.
by jspiros 12y ago
I've got some external hard drives that I rotate in and store off-site but still nearby (down the street) for some data. I also have constant online backups running to various locations/services (Linode, AWS, CrashPlan, Dreamhost,
20.
by jspiros 12y ago
I'm in Ohio, where it apparently averages around 0.11USD per kWh, so probably closer to ~320USD here.
21.
by jspiros 12y ago
~330 watts.
22.
by jspiros 12y ago
I haven't experienced ANY drive failures. Which means I'm probably on track for one soon... When I started out, I began with a single 5-disk vdev using a SATA port multiplier enclosure to connect the drives. Over time, I bought mo
23.
by jspiros 12y ago
It is running 24/7; I don't feel comfortable powering it down regularly; that is something I would worry about from the OP's setup, I wouldn't want to subject all those mechanical drives to so many power cycles over time
24.
by jspiros 12y ago
I have a similar capacity solution running at home, though I have far more (fewer disks per) vdevs. I've been running it for a few years now, so some things aren't as optimized as they could be, but it still works well for my uses
25.
by jspiros 12y ago
Huh, here I am using iTerm2 every day and I didn't realize it had support for this. Fantastic.
26.
by jspiros 12y ago
The ReGIS support is nice, but with the custom functionality it would be nice if instead of echoing an ASCII string like "HTERMFILEXFER" it used actual escape sequences. Terminology[1] does this correctly with its own escape seque
27.
by jspiros 13y ago
I'd imagine this works similarly to how a slice of bread in a bag of cookies keeps the cookies chewy, as the sugar attracts and holds the water from the bread, and keeps the cookies from drying out. Something to do with sugar being hyg
28.
by jspiros 13y ago
What are you looking for in a city, besides friendly people?
29.
by jspiros 13y ago
I've used xpra for about a year now, and I do recommend it if it seems like it would fill a need in your workflow. For me, I'm using it primarily as a way to run Pidgin (for Jabber and AIM, primarily) on my server that I can conne
30.
by jspiros 13y ago
If I could vote this up a thousand times, I would. Very nice metaphor.

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