## When should we change our catch-all email accounts?

I have some tote bags.
And I wondered when it is necessary to empty an email account and start using a new one.
How many entries on spam lists?
In addition, once I get rid of old projects, apart from the projects that submitted (but unverified accounts), is there another need to keep older accounts?
Thank you!! I hope everyone is having a good weekend.

## Stories with Swipe up on Instagram

you do not do it?

Advertise almost everything here, with CPM banners, CPM mail ads, and CPC context links. You can target relevant areas of the site and show ads based on the geographic location of the user, if you wish.

Starts at just \$ 1 per CPM or \$ 0.10 per CPC.

## Problems accessing partitions gpt raid on linux ubuntu 16.04.2 LTS

I had a 6 year old server that I replaced the hard drives and upgraded last summer. It was an AMD Athlon system of 2 cpu (18 cores each) whose sole purpose was to run VMs (using KVM) that my graduate students could use to test their research. It contained a 1 TB boot disk and 4 2T disks in a Raid6 array. Periodically, I took the virtual machines and saved the virtual disks. The server was located in a secure server room with limited access. However, earlier this week, the unthinkable happened and a fire broke out in the server room. I was able to access the system remotely and proceed to a methodical shutdown (now shutdown -h).

The machine itself is not too damaged, but is full of toxic soot. The technicians were able to remove the disks from the machine and clean them. I currently have them in an Intel machine borrowed from Office 7, and although there are not enough drive bays, there are enough SATA ports. The idea was to boot from the seeded boot disk and mdadm would reassemble drives based on UUIDs. We could then save the virtual disks in order of priority. However, when we started, the RAID array was not present.
Putting them back in the previous machine is not really an option as there is still a significant amount of very fine toxic soot in the casing that the fans will spread everywhere.

I am currently imaging the raw data of the 4 RAID disks on a large external drive using dd. So, if they fail because of damage, we still have the data. Until now, the discs behave themselves. Two disks were copied without any errors reported by dd and the third is in progress. No disk errors appear to be reported in the system logs.

At the moment, the problem seems to be that the system does not see partitions on 2TB drives. The command Parted / dev / sdb print & # 39; does not report anything to the player. I used fdisk and I got the following results. I showed the help menus (but I did not want to show that the options I had used).

``````Script started on Sat 31 Aug 2019 11:17:57 AM EDT
root@perseus:~/usb2# fsdisk /dev/sdb
Welcome to fdisk (util-linux 2.27.1).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.

Command (m for help): p
Disk /dev/sdb: 1.8 TiB, 2000398934016 bytes, 3907029168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 2947A17A-DC83-4C60-8D2A-63D2403015DD

Command (m for help): m

Help:
...
Misc
x   extra functionality (experts only)
...

Command (m for help): x

Expert command (m for help): m

Help (expert commands): m
...
GPT
i   change disk GUID
n   change partition name
u   change partition UUID
M   enter protective/hybrid MBR
..

Expert command (m for help): p
Disk /dev/sdb: 1.8 TiB, 2000398934016 bytes, 3907029168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 2947A17A-DC83-4C60-8D2A-63D2403015DD
First LBA: 34
Last LBA: 3907029134
Alternative LBA: 3907029167
Partition entries LBA: 2
Allocated partition entries: 128

Expert command (m for help): M
Entering protective/hybrid MBR disklabel.

Expert command (m for help): p
Disk /dev/sdb: 1.8 TiB, 2000398934016 bytes, 3907029168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: dos
Disk identifier: 0x00000000

Device     Boot Start        End    Sectors Id Type Start-C/H/S   End-C/H/S Attrs
/dev/sdb1           1 3907029167 3907029167 ee GPT        0/2/0 1023/63/255

Partition 1 does not start on physical sector boundary.

Expert command (m for help): q

root@perseus:~/usb2# exit
exit

Script done on Sat 31 Aug 2019 11:18:51 AM EDT
``````

All readers print identical results. I guess if there was a problem when shutting down during the fire, they would not all be corrupted in the same way.

So the score seems to be there, but parted and partprobe do not find it. I've checked with asmod, and the raid456, raid6_pq and async_raid6_recov modules are loaded. As far as I know, if the partition is not in / dev, the mdadm variants to parse or specifically assemble the raid will not work. I still tried them, but no luck.

The system was reinstalled and configured using the ubuntu 16.04 server installation DVD last summer (previous raid disks were backed up and replaced with new ones). As far as I know, the installation was nothing special, apart from the use of a bridge network device so that graduate students could remotely access their individual vm's . The boot volume and the RAID array have been created and configured by the ubuntu installer with default options as far as I can remember.

I was trying to follow the advice on the following link, but I did not use anything that could be destructive because I'm saving the raw data from the disks.

The score does not show in / dev

Any ideas how can I make partitions visible? The graduate student is writing her thesis and, although she has most of the data (previous backups), data on these disks is needed.

Thank you.

## Can not start prometheus with blackbox_exporter configuration example in place

``````scrape_configs:
- job_name: 'blackbox'
metrics_path: /probe
params:
module: (http_2xx)  # Look for a HTTP 200 response.
static_configs:
- targets:
- http://prometheus.io    # Target to probe with http.
- https://prometheus.io   # Target to probe with https.
- http://example.com:8080 # Target to probe with http on port 8080.
relabel_configs:
target_label: __param_target
- source_labels: (__param_target)
target_label: instance
replacement: 127.0.0.1:9115  # The blackbox exporter's real hostname:port.
``````

The execution of prometool check-config prometheus.yml & # 39; returns the following text.

``````Checking prometheus.yml
FAILED: relabel configuration requires a regular expression
``````

Can not get the service to start with the configuration of the blackbox exporter? No matter which ideas like the example configuration of the github page and the same detailed configuration elsewhere online.

## manual focus – Canon 350D Old Practicar + lens: sharp image on focus screen, blurred image on sensor

I've tried using an old Practicar 50mm / 1.8 lens with Canon 350D, using a suitable adapter ring, Practica B / Canon EF. Of course, this lens is completely manual in this configuration. In the viewfinder, it seemed to go: the focus was perfect if the scene was distant and the focus ring was set to infinity.

However, the photos taken in the same situation are considerably blurred and it is not just an illusion, for example. Small objects clearly visible with the physical viewfinder are almost completely blurred in a photo, playback discs are clearly visible on the photo.

I think the case is out of order, but the factory zoom supplied with this 350D, in manual focus mode, displays the same sharpness on the focus screen and on the pictures taken.

I can not explain that. Do you have an answer to this riddle? Is there a solution?

## combinatory – Show that a 1-high band can be tiled iff a 2-high band can be tiled

Consider the set of all triples $$(X, x_0, x_1)$$ and also the set of all pairs $$(X, x_0)$$, or $$X, X$$ are sets of squares whose sides are assigned colors and $$x_0, x_1 in X; x_0 & # 39; in X & # 39;$$ are fixed squares.

Prove that there is a function (calculable) that assigns to each triple $$(X, x_0, x_1)$$ with finish $$X$$ a pair $$(X, x_0)$$ with finish $$X$$ such as

• For all triples $$(X, x_0, x_1)$$ with finish $$X$$, if the band of infinite length and height 2 can be tiled with elements of $$X$$ in such a way that $$x_0$$ go to the lower left corner and $$x_1$$ go to the upper left corner, then the infinite horizontal band (height 1) can be tiled with squares of $$X$$ so that the leftmost square is $$x_0$$.

• For all triples $$(X, x_0, x_1)$$ with finish $$X$$, the infinite horizontal band (height 1) can be tiled with squares of $$X$$ so that the leftmost square is $$x_0$$, then the band of infinite length and height 2 can be tiled with squares of $$X$$ in such a way that $$x_0$$ go to the lower left corner and $$x_1$$ go to the upper left corner.

I do not even know how to define the function, let alone the following steps. A natural candidate for the image of $$X$$ is $$X$$ itself, but is it useful? And we do not know how $$x_0$$ should be linked to $$x_0$$ and $$x_1$$.

## mdadm – Why is RAID 0 slower than a single NVME drive?

I have created a MD RAID 0 array using two NVME disks. I realize that using two different drives rather than identical drives is not optimal, but when I come to buy the new one, they are all faster than my reader. ;a year.
Using Patriot Scorch 512 Go Nvme and Mushkin Helix 256 GB. I created a 32GB partition on each of them and created the MD RAID array 0 using 16 KB chips, then formatted in EXT4 to test it.

``````kde-swiebel@T5600-kde:~\$ cat /proc/mdstat
Personalities : (raid0)
unused devices:
kde-swiebel@T5600-kde:~\$ sudo mdadm -Cv -l0 -c16 -n2 /dev/md0   /dev/nvme0n1p3 /dev/nvme1n1p2
mdadm: /dev/nvme0n1p3 appears to contain an ext2fs file system
size=34277376K  mtime=Wed Dec 31 17:00:00 1969
mdadm: /dev/nvme1n1p2 appears to contain an ext2fs file system
size=34277376K  mtime=Wed Dec 31 17:00:00 1969
Continue creating array? y
kde-swiebel@T5600-kde:~\$ cat /proc/mdstat
Personalities : (raid0)
md0 : active raid0 nvme1n1p2(1) nvme0n1p3(0)
68487168 blocks super 1.2 16k chunks

unused devices:
kde-swiebel@T5600-kde:~\$ sudo mkfs.ext4 -F /dev/md0
mke2fs 1.44.6 (5-Mar-2019)
Creating filesystem with 17121792 4k blocks and 4284416 inodes
Filesystem UUID: f9826f0f-7ba4-40b2-9c9f-861379e82703
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424

Allocating group tables: done
Writing inode tables: done
Creating journal (131072 blocks): done
Writing superblocks and filesystem accounting information: done
``````

Evaluation tests of the Gnome-disk 3.32.1 utility
1000 samples, size 1MB

Patriot Scorch
Average reading: 1362.2 MB / s
Average writing: 228.7 MB / s
Average access time 0.07 ms

Helix Mushkin
Average reading: 1529.5 MB / s
Average writing: 1003.1 MB / s
Average access time 0.06 ms

/ dev / md0
Average reading: 1751.3 MB / s
Average writing: 26.9 MB / s
Average access time 0.05 ms

/ dev / md0
Average reading: 2927.6 MB / s
Average text: NA
Average access time 0.04 msec

The read speed, though faster than either drive alone, is not too impressive, but when I changed the read-only test, it improved dramatically.
The speed of writing, however, was horrible. The write speed was 10% of that of the slowest reader.

I've tried removing the RAID array and creating it with different block sizes (4K, 32K, 128K), but little change with each change. The write speed was between 11 MB / s and 32 MB / s

According to Phoronix and other sites, that's what I do well and I should see a lot more gains.

Using mdadm version 4.1-1ubuntu1, kernel 5.0.0-25-generic
Running on a Dell T5600 with Dual Xeon E5-2609 (Quad Core 2.4Ghz)

Ideas that I did wrong?

## WordPress Relational Database – WordPress Development Stack Exchange

#### Battery Exchange Network

The Stack Exchange network includes 175 question-and-answer communities, including Stack Overflow, the largest and most reliable online community on which developers can learn, share knowledge and build their careers.

Visit Stack Exchange

## stock android – Contacts displayed multiple times with different color codings

Today, I migrated to a new mobile phone under Android Pie. The model of this phone is Xiaomi Mi A3. I had the habit of saving all my contacts in Google Contacts and syncing them every time I changed my phone. This time, I have encountered a problem. Although each contact has been saved exactly once in Google Contacts, I find multiple copies of each contact displayed in my Contacts app with different color codes. Suggest a way to solve this problem. Thank you!