Azure Virtual Machine Scale Set error: The selected virtual network has a default subnet with a reserved name

What makes a subnet as default if not the name or lower starting IP? Getting below error on selecting a virtual network:

enter image description here

Below are the subnets configured
Name                IPv4            Available IPs
default             10.0.0.0/24     251
GatewaySubnet       10.0.1.0/24     availability dependent on dynamic use
AzureFirewallSubnet 10.0.3.0/26     56
Bot-subnet          10.0.4.0/24     251

postgresql – SQL statements to ensure that the same location cannot be reserved more than once on the same day?

I have two tables one for venues (3 locations hall1, hall2 and hall3) and one for orders (a row could be 441,2004,50895,’Requested’,’2021-01-02 10:53′,’2021-03-06 11:46′,7,3) as follow:

CREATE TABLE loc (
    loc_id       INT NOT NULL,
    name_loc     VARCHAR(150) NOT NULL,
    description  VARCHAR(150) NOT NULL,
    type_loc     VARCHAR(150) NOT NULL,
                 CONSTRAINT pk_loc PRIMARY KEY (loc_id)
);

CREATE TABLE orders (
    o_id             INT NOT NULL, 
    o_code           INT NOT NULL, 
    type_id          INT NOT NULL, 
    degree           VARCHAR(150), 
    creation         TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
    status           TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP, 
    c_user           INT NOT NULL,
    loc_id           INT NULL,
    loc_dt           TIMESTAMP NULL,
                     CONSTRAINT pk_orders PRIMARY KEY(o_id),
                     CONSTRAINT fk_loc FOREIGN KEY ( loc_id ) REFERENCES loc ( loc_id )
);

I cannot change the table structure with indexes and I have to use transactions to prove my theory.
At first, I was trying to solve the problem as if there’s no concurrency, I was doing something like this:

START TRANSACTION READ COMMITED;

UPDATE orders
SET loc_id = 1 -- 2 or 3
WHERE 
    o_id IN
    (
        SELECT o2.id
        FROM orders AS o2
        WHERE o2.loc_id IS NULL AND CURRENT_TIME != loc_dt 

    )
COMMIT;

Which SQL statements do I need to ensure that the same location cannot be reserved more than once on the same day? How can I test it with and without concurrency?
I don’t know if my SQL statements are okay or how to continue when there are two transactions executing at the same time.

All suggestions are welcome.

script – Why were OP_RESERVED, OP_RESERVED1, and OP_RESERVED2 originally reserved?

Since the earliest public release of Bitcoin, OP_RESERVED, OP_RESERVED1, and OP_RESERVED2 have been defined at 0x50 (80), 0x89 (137), and 0x8a (138), respectively.

Why?

The intended purpose of all the other now-disabled opcodes seem to be well documented, but do we have any record or explanation for why the OP_RESERVED{1,2} opcodes were assigned at their current locations?

OP_RESERVED seems pretty clearly placed to allow OP_1 (0x51, 81) through OP_16 (0x60, 96) to match each pushed number 1-to-1 with the second half of the byte (such that 0x515253 is easily read as OP_1 OP_2 OP_3). It may also be reserved to ensure users writing raw contracts don’t accidentally assume 0x50 is either OP_0 (0x00) or OP_1NEGATE (0x4f, 79), which might be easily confused because 0x80 is basically a negative sign in the Script Number encoding. (Any other ideas as to why Satoshi didn’t fill in OP_RESERVED?)

For OP_RESERVED1 and OP_RESERVED2, the reasoning seems less obvious.

In the oldest commit they are listed under // bit logic, a set of 8 opcodes which begins at 0x83 (131) and continue through OP_RESERVED2 (0x8a, 138).

These don’t seem to fall on any particularly special codepoints, and neither of the preceding or following opcode “groups” begin or end at any obviously special codepoints.

Is there something unusual about 0x89/137 and 0x8a/138 for which Satoshi might have reserved these codepoints?

Is there some other instruction set which reserves them (or where reserving them makes the “Bitcoin instruction set” consistent with that instruction set)?

mining theory – How is the witness reserved value set in a coinbase transaction?

The only constraint on this value is that it must be 32 bytes. Otherwise there are no constraints. This is done to allow for a future soft fork to commit to new data and have non-upgraded nodes still be able to store something in the block that commits to the new data. As such, the witness reserved value must remain unconstrained to allow for a future soft fork to work.

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history – In Crete, Greece around mid-late 1940’s photos with the stamped on the back “A M Crown Copyright Reserved”?

I have a few old photos from about the mid to late 1940’s in Crete, Greece (the civil war occurred during the time). There is a specific stamp on the back of two photos which is marked A M Crown Copyright Reserved. Any guesses why only the children were photographed by the British photographers?

One photo is a family (my relatives) who were kids and teenagers then, standing close together looking straight into the camera as if they were told to stand like that with their arms down next to their sides. They were not smiling. And a few looked “concerned” in the photos. Before recently, I thought it was a “family” photo. But now I am not so sure. Maybe it was a family photo.

Furthermore, the other small picture I have with the same stamp on the back is only of the small boy from the other photo. He is standing in front of some kind of painted or printed mural on a cloth backdrop that shows a scene of a column, stairs, stair rails, and a wooden look image in the back of a wall.

I did some research and all I could find is that the British forces and photographers were in Greece at that time and it wasn’t the best of times.

I found this info:
“The A crown M was the copyright mark of the Air Ministry, now ministry of Defence.
I was a photographer in the RAF and all photographs had to be stamped on the reverse
https://www.ephotozine.com/forums/topic/crown-c…”

I rooted my phone but my root is saying “binary reserved” as the app was uninstalled, causing me to be unable to reroot or unroot

I rooted my phone but my root is saying “binary reserved” as the app was uninstalled, causing me to be unable to reroot or unroot, I can’t do anything when it comes to rooting. My phone is rooted but the superuser was deleted by accident and i tried to reinstall it, it installed successfully but my phone is still not giving me the option to allow an app to run with su permissions. I tried flashing odin and odin is not working, twrp, and supersu. I’m scared to flash any other root methods because I rooted my phone and the only app that stopped working was Google Chrome. I don’t want to lose access to my apps, I was trying to back up but stupid ODIN won’t let me flash TWRP or CWM recovery to my phone. My phone is a Galaxy S4 (SGH-I337).

windows 10 – Not enough space in System Reserved partition (for shadow copy) when trying to create System Image

I do know that system image is a legacy way to create Windows 10 backups, and I only use it as added helper method.

I freshly installed my Windows 10 19041 Workstation and in the setup I created a 300G partition on a 1T unpartitioned SATA SDD. Windows 10 setup created an additional 50M(!) System Reserved partition automatically, the size was its chosen size. Creating System Reserved automatically is OK, I did know this habot of Windows setup.

Now I am trying to create a System Image, and got the error message. The message has right, below 500M the minimum req for shadow copy is 50M, so in my 50M partition, where 31M is reserved obviously there are no free 50M space. (then why it picked the 50M size during setup?) In my prev Windows 10 install the size of System Partition was 131M… also automatically created…)

Question

If I would like to have the System Image creation possibility, what are my options?

a) Can I somehow resize this System Reserved partitions (I suppose only with 3rd party tool, because the Windows System Partition has to be moved) If there is a trusted tool, (I means security, not data safety) I would give it a shoot)

b) In case it is not recommended, I am willing to reinstall my Windows 10, but it is possible to somehow let Windows 10 during the setup create bigger System Reserved partition supposing there are 300G unpartitioned space?

enter image description here

enter image description here

amazon web services – How to find available “2nd hand” AWS EC2 instances in the Reserved Instance Marketplace?

Using the AWS CLI, I run this command

call aws ec2 describe-reserved-instances-offerings --availability-zone us-east-1b --filters Name=marketplace,Values=true

https://awscli.amazonaws.com/v2/documentation/api/latest/reference/ec2/describe-reserved-instances-offerings.html

It takes forever to run (more than 5mins). The output is below. This seems to indicate there are only two 2nd hand reserved instances in the whole of us-east-1b? weird. I hope there’s a bug, or a timeout, or something wrong with my command.

---------------------------------------------------------------------------
|                   DescribeReservedInstancesOfferings                    |
+-------------------------------------------------------------------------+
||                      ReservedInstancesOfferings                       ||
|+------------------------------+----------------------------------------+|
||  AvailabilityZone            |  us-east-1b                            ||
||  CurrencyCode                |  USD                                   ||
||  Duration                    |  36288000                              ||
||  FixedPrice                  |  218.75                                ||
||  InstanceTenancy             |  default                               ||
||  InstanceType                |  m1.small                              ||
||  Marketplace                 |  True                                  ||
||  OfferingClass               |  standard                              ||
||  OfferingType                |  All Upfront                           ||
||  ProductDescription          |  SUSE Linux                            ||
||  ReservedInstancesOfferingId |  af1959a7-f884-4781-a8d8-25719911daf7  ||
||  Scope                       |  Availability Zone                     ||
||  UsagePrice                  |  0.0                                   ||
|+------------------------------+----------------------------------------+|
|||                           PricingDetails                            |||
||+--------------------------------+------------------------------------+||
|||  Count                         |  1                                 |||
|||  Price                         |  218.75                            |||
||+--------------------------------+------------------------------------+||
|||                          RecurringCharges                           |||
||+--------------------------------------+------------------------------+||
|||  Amount                              |  0.0                         |||
|||  Frequency                           |  Hourly                      |||
||+--------------------------------------+------------------------------+||
||                      ReservedInstancesOfferings                       ||
|+------------------------------+----------------------------------------+|
||  AvailabilityZone            |  us-east-1b                            ||
||  CurrencyCode                |  USD                                   ||
||  Duration                    |  2592000                               ||
||  FixedPrice                  |  58.75                                 ||
||  InstanceTenancy             |  dedicated                             ||
||  InstanceType                |  c4.2xlarge                            ||
||  Marketplace                 |  True                                  ||
||  OfferingClass               |  standard                              ||
||  OfferingType                |  No Upfront                            ||
||  ProductDescription          |  Linux/UNIX (Amazon VPC)               ||
||  ReservedInstancesOfferingId |  73fc138d-d536-4806-b2a3-2cd05752240e  ||
||  Scope                       |  Availability Zone                     ||
||  UsagePrice                  |  0.0                                   ||
|+------------------------------+----------------------------------------+|
|||                           PricingDetails                            |||
||+---------------------------------+-----------------------------------+||
|||  Count                          |  1                                |||
|||  Price                          |  58.75                            |||
||+---------------------------------+-----------------------------------+||
|||                          RecurringCharges                           |||
||+--------------------------------------+------------------------------+||
|||  Amount                              |  0.195                       |||
|||  Frequency                           |  Hourly                      |||
||+--------------------------------------+------------------------------+||