5/31/2023 0 Comments Shadow openzfs![]() when I look through said mount, I now see that new files are not there, and the snapshots are taking up 0B of space, and zfs list is not showing that the used space is growing (like "du -s /pool/dataset/childDataset3" would)Īnd, if I "sudo zfs rename pool/dataset/childDataset3 pool/dataset/childDataset3-bad", the /pool/dataset/childDataset3 folder is still there with all the data, and path /pool/dataset/childDataset3-bad doesn't exist, albeit zfs thinks it exists and consuming space i.e. Note that albeit new snapshots are being made on this glitched child dataset, and I can at least mount those snapshots (albeit can't browse. Since it doesn't seem like anyone has an answer (or they do, but just not finding my post), I'll answer my question: My backup solution is to switch users to the replicated dataset (on another server), and then destroy this dataset, then send a snapshot back (but I want to avoid this, because 32TB doesn't just pop over) Using zfs version 0.7.12-2+deb10u2 if that matters So is there a way to re-create the child dataset's inode? (forgive me if I'm totally saying that wrong) I can browse one snapshot of files this way also noteworthy, when I run the disk filesystems command with show inodes, all of the working datasets and child datasets show up EXCEPT for the one I'm having trouble with (what I'm calling "childDataset3"): $ df -i zfs for them and, I can even mount a snapshot from the above list from the one troublesome dataset (so they exist, just not as a nice list in a normal spot that users can dip into): $ sudo mkdir /mnt/tempShadow I have other child datasets, and I can see the snapshot dir inside. ![]() Ls: cannot access '/pool/dataset/childDataset3/.zfs': No such file or directory $ sudo zfs list -t snapshot | grep childDataset3Ī whole bunch are listed as expected (e.g.
0 Comments
5/31/2023 0 Comments Definition dendrite![]() Typically, when an electrochemical signal stimulates a neuron, it occurs at a dendrite and causes changes in the electrical potential across the neuron's plasma membrane. Dendrites provide an enlarged surface area to receive signals from the terminal buttons of other axons, and the axon also commonly divides at its far end into many branches ( telodendria) each of which ends in a nerve terminal, allowing a chemical signal to pass simultaneously to many target cells. Typically, axons transmit electrochemical signals and dendrites receive the electrochemical signals, although some types of neurons in certain species lack axons and simply transmit signals via their dendrites. Dendrites often taper off in shape and are shorter, while axons tend to maintain a constant radius and be relatively long. Axons can be distinguished from dendrites by several features including shape, length, and function. The green arrow shows the dendrites emanating from somaĭendrites are one of two types of protoplasmic protrusions that extrude from the cell body of a neuron, the other type being an axon. Electrical stimulation is transmitted onto dendrites by upstream neurons (usually via their axons) via synapses which are located at various points throughout the dendritic tree.ĭendrites play a critical role in integrating these synaptic inputs and in determining the extent to which action potentials are produced by the neuron. Please see for interactive versionĭendrites (from Greek δένδρον déndron, "tree"), also dendrons, are branched protoplasmic extensions of a nerve cell that propagate the electrochemical stimulation received from other neural cells to the cell body, or soma, of the neuron from which the dendrites project. The dendrites receive a signal, the axon hillock funnels the signal to the initial segment and the initial segment triggers the activity (action potential) that is sent along the axon towards the synapse. ![]() Synapses allow neurons to activate other neurons. Schwann cells make activity move faster down axon. Many will live the whole lifetime of the animal.The neuron contains dendrites that receives information, a cell body called the soma, and an axon that sends information. Generally, once born, neurons do not divide. However, stem cells in the adult brain may regenerate functional neurons throughout the life of an organism. The chain reaction is a strong electrical current called an action potential that flows down the axon to the next synapse.įully differentiated neurons do not divide. If the dendrites get lots of signals from axons, then it sets off a chain reaction. The movement of the charged ions in the dendrite causes an electrical current, which spreads to the soma briefly before being restored to normal. These chemicals cross the synapse to the dendrite, where they trigger the flow of ions into or out of the cell. When electrical impulses reach the end of an axon, they trigger the release of chemicals called neurotransmitters. Ī dendrite from one neuron and an axon from another neuron meet at a synapse, which is a very narrow gap between the two cells. ![]() The dendrites carry signals from other neurons into the soma, and the axon carries a single signal from the soma to the next neuron or to a muscle fiber. The signals go into the cell body (or soma).Ī cell may have hundreds of dendrites, but may have only one axon. ![]() Dendrites are the branches of neurons that receive signals from other neurons. |