I have a ZFS server that's stuck in a weird state, and I was wondering if someone could suggest my next step.
pool: pool1
state: DEGRADED
scan: resilvered 21.7G in 0 days 00:05:02 with 0 errors on Sat Dec 19 14:33:14 2020
config:
NAME STATE READ WRITE CKSUM
pool1 DEGRADED 0 0 0
raidz2-3 DEGRADED 0 0 0
spare-0 DEGRADED 0 0 0
replacing-0 UNAVAIL 0 0 0 insufficient replicas
vd09 UNAVAIL 0 0 0
d37 OFFLINE 0 0 0
vd17 ONLINE 0 0 0
vd10 ONLINE 0 0 0
vd11 ONLINE 0 0 0
vd12 ONLINE 0 0 0
vd13 ONLINE 0 0 0
vd14 ONLINE 0 0 0
vd15 ONLINE 0 0 0
vd16 ONLINE 0 0 0
spares
vd17 INUSE currently in use
vd09 is the drive that originally failed. It had the following naming convention in /etc/zfs/vdev_id.conf:
alias vd09 /dev/disk/by-path/pci-0000:81:00.0-scsi-0:2:9:0
It has been replaced by a new drive which, since it is in the same backplane/slot, has the same /dev/disk path as the old vd09.
d37 is the drive that was meant to replace it, and uses a slightly different naming convention:
alias d37 /dev/disk/by-id/wwn-0x600605b00ed148102442281633e8797d
d37 isn't currently showing up at the OS level, but since the LSI controller is showing all 36 drives, must be in there somewhere. Instead of JBOD, we're using these drives as "one-drive RAID arrays" so we can use the LSI's write caching.
vd17 was a spare drive that apparently decided to leap into action. So now all three are a bit knotted up.
Any suggestions on how to clear that up?
I came across this neat theorem, and I thought it would make an excellent topic.
You've done a lot of videos on knot theory. One neat fact is that any knot diagram of the unknot can be simplified into a circle via Reidemeister moves. However, this is not a monotonic simplification: there are times when, to unknot a certain diagram, you must first make a Reidemeister move that increases the number of crossings before they can decrease.
However! There is a way to monotonically simplify unknots. A grid diagram of a knot is a knot diagram made of horizontal and vertical line segments such that the vertical edges are all overpasses and the horizontal edges are all underpasses. Here's an example: notice how all the horizontal edges are beneath the vertical ones. This restriction means the crossings are completely determined by the positions of the edges. It turns out that every knot can be represented by a grid diagram.
Define the complexity of a grid diagram to be the number of vertical edges (or the number of horizontal edges; there's always the same amount). Note that this isn't the same as the number of crossings.
There exists a set of "elementary moves" on grid diagrams such that any two grid diagrams of the same knot can be related by a sequence of these elementary moves. Some of these do not change the complexity; others do. (You can see a description and images of these moves starting on page 3 of this paper.)
Dynnikov's monotonic simplification theorem says: Any grid diagram of the unknot can be turned into the trivial diagram via moves that never increase the complexity (as defined above).
I wish this result was better known. Isn't it neat? If I give you a nasty unknot and tell you to unknot it, you can be guaranteed you never need to make it more complex in any intermediate step (for a certain meaning of "complex").
So, I am formally requesting: Please make a video on this! Maybe you can't track down Dynnikov himself (he's in Russia I think), but perhaps Ian Agol, or another topologist who can describe the result (if not the proof) on camera. More people really need to know about this theorem.
To simplify things and not spew out a huge bit of world building I’ll keep it brief. Essentially I have two characters from the distant past that fill more or less the same role in the lore of the world, one being the first mage who created magic and taught it to mankind and another who is a hero that tamed the world to make it habitable for mankind and gave fire and the art of blacksmithing to the world. The problem is that both of these are important for different reasons and play very differently roles in the story. The mage plays a active role in the story as a mentor to the main character near the midpoint of her arc while the hero in question both founded a major religion and is the reason for the philosophical background that the world operates on.
A major point of the story is that the main character is a extremely optimistic person stuck in a world where the archetypal hero is less of a Christ figure and more of a Atlas Shrugged style Randian hero, and this historical hero is probably the biggest example of a glorious bastard I’ve ever written. He started a war that lead to mass deicide, the death of most of the monsters in the world, and a whole hell of a lot of other things including but not limited too starting a religion dedicated to killing the last gods that survived. (I should also say that said character is from our world and a lot of the drama is based around the culture shock)
Now that I’ve explained why these two are important I should say my problem. Both of them have a Prometheus style backstory of liberating mankind by bringing them the knowledge they need to rise to the top of the world. Changing the backstories to not contradict isn’t a problem, that’s mostly as simple as moving the dates around, im just worried that the existence of one will devalue the other. If the mage came later then gifting magic to mankind is less important because they had already been liberated from the various monsters of the world and the hero coming later wouldn’t make sense either because then humans wouldn’t need his help. I thought about just combining the characters but the two of them are very different in what they really think.
I was every 3 days and i started towel rubbing like a month ago but i feel like i’m not going anywhere . Whenever i wash my hair just becomes loose , any tips?
https://en.wikipedia.org/wiki/6%E2%82%83_knot
Not sure what subreddit to post so sorry if it does not belong here.
Just officially stopped lurking on this subreddit, in need of some perspective and advice. This is a long one.
A little background: I spent my early- to mid-twenties in a relationship with someone very unadventurous in bed, and a lot of my fantasies went unfulfilled, but I always felt safe and comfortable with him, and he was always very vocal about how attractive he found me, both before I lost weight and after. After him, I had two short term sexual relationships which were fun but not exactly what I was looking for.
About my sex style: I tend to take a long time to warm up, and up until this year have only had clitoral orgasms (learned to give myself g-spot orgasms this year, which has been great fun!). I much prefer sex where I'm being dominated; d/s fantasies, porn and erotica is essentially the only thing I use for masturbatory aid. It's not the only type of sex that I enjoy, but since I get very little physical sensation from a penis in my vagina, I feel like I need something more mentally or emotionally connected than just the physical act. I also really enjoy sex with a massage first or just a lot of build up.
Right now, my partner of a year and a half, who I just moved in with, and I are having an extraordinarily difficult time making sex work for us. At the beginning of our relationship he told me that the sex wasn't working for him, partly because he was used to giving women multiple orgasms from piv sex, and he loved the feeling of being able to turn a woman on so much (for the record, he's slept with a lot more people than I have and has had a few long term girlfriends, who all apparently had multiple orgasms every time.). We did a lot of talking and negotiating, and the sex got a lot better for both of us. Better sex than I've ever had, he's much more adventurous than any other partner I've had, we were doing more d/s stuff that I loved, and he said that he didn't mind anymore about the orgasms.
Just before we moved in together, right after we had signed the lease, he dropped the bombshell that he wasn't as physically attracted to me as his previous girlfriends, although he assured me that he was more overall attracted to me than anyone else. Some other things he told me were that he used to have sex with more touching and looking at each other with previous girlfriends because he found their bodies more arousing. He told me all this just after I had inadvertently said something that triggered a memory of bad past sexual experience
... keep reading on reddit ➡I'm looking for a hair salon in Albany or surrounding areas that can help me fix my hair. I recently had a medical issue that disallowed me from doing my own hair for the past 6 weeks or so. I have one huge dread in particular that I want out, but I can't do it on my own. I have long, curly hair and am not interested in cutting.
Any recommendations of a hair salon that can help?!
Counting by mathematical prime knots! Make sure to include a diagram, image or wiki page of the knot with your posts.
Tables can be found here
Mirrors are not counted as separate.
Thread ends at the 1000th knot, 12a_199.
After I got my new backpack, I tied my Flareon plush onto the loop of my backpack like it was on my old backpack. That plush has had a history of coming untied and falling off on this new backpack. Thankfully people told me something fell from my bag.
Three weeks later (last week Wednesday), I decided to knot the hell out of the string attached to the Flareon plush. I could not even get it unknotted myself at this point.
However, I just noticed that the Flareon was gone from the loop on my backpack, string and all. The last time I had my backpack was Thursday. This means that it came unknotted somewhere downtown on Thursday.
Like I said, I could not even unknot the damn thing. So how can it come unknotted like this on its own when I could not even unknot it manually?
