What could cause network transfer stalling in ubuntu server 18.04 running on Raspberry Pi 3B+?

I was playing around with raspiBackup.sh (https://www.linux-tips-and-tricks.de/en/quickstart-rbk/) on my 2nd pi as I successfully use it on my 1st pi which runs Raspbian, but I’m running into trouble getting it running on pi3b+ with ubuntu server (ubuntu-18.04.2-preinstalled-server-arm64+raspi3.img.xz)

I did do a succesful rsync backup to attached usb key to rule out it’s the script malfunctioning and this worked out no problem.

However when trying to do the same onto a nfs share (mounted via autofs) the pi stalled and monitoring the nfs share on the host didn’t show any files being copied over past the first few hundred of megabytes.

Then I did some testing and found out that while my link speed is reported as 1000Mbit, I could only copy 5GB file from the nfs server to the pi at ~10-13MB/s. This might be due to sdcard although I’m using the samsung evo 64gb one supposed to have 90read/30write iirc.

However, when trying to copy the 5GB file back to the nfs share the pi started copying at around 10-13MB/s again, and stalled withing first 300-ish MBs and I captured this in dmesg: https://turbomrak.ddns.net/s/tE8cApNQ7nKiHTT

dd backup copied a bit, hung, copied a bit, hung and then after it took 3 hours to copy 1gb I gave up and rebooted the pi.

using wifi achieves same results more slowly.

Is this something wrong with my installation or the pi or the system ?

I have a question about domain transfer

Hi,
this may seem a newbie question but this is confusing for me.
If anyone can explain this, I would be greatful.

I have this website (domain+hosting) with a company. registered on Sep 18, 2018 for one year.
The hosting package + domain is going to expire on Sep 17, 2019.
I want to keep this domain but not with this company.
So do I have to transfer this domain or renew with another company?
And when?
If I transfer this domain to new company, today on June 23, 2019.
Will it be…

I have a question about domain transfer

Gare du Nord to Gare de Lyon transfer time for a family

When I book with the Eurostar site to a destination in the south of France, they only offer a short Paris transfer time (54 minutes) between Gare du Nord Eurostar and Gare de Lyon TGV. Is this easily achievable with 2 adults and 2 walking toddlers (no buggy)? How would you travel it to not be in a rush, and are there any tips to avoid surprises and delays?

Can I transfer SEVIS Information for F1 US Visa, if I have already paid once for a J1 US visa before?

I applied for an F1 US visa sometime back, for which, the biometric information has already been submitted; the interview is also coming up soon. I had previously visited the US for a summer as a J1 summer intern, which had involved paying a SEVIS fee, and thus has a corresponding SEVIS ID. When applying for my F1 visa, I used my old SEVIS ID (from the DS-2019 corresponding to the old J1 visa) by mistake, and the application showed no error. I was wondering which of the following needs to be done by me now:

  1. Request transfer from old SEVIS ID (DS-2019) to new SEVIS ID (I-20)
  2. Pay SEVIS fee for the new SEVIS ID and request the information to be updated in my visa application
  3. Cancel the previous application and start a new application after paying the SEVIS fee

Any help in this regard will be deeply appreciated!

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Transfer excel File in memoryStream to frontend corrupted

back end i create my file who was working fine when i save it on the server

using (SpreadsheetDocument document = SpreadsheetDocument.Create(ms, SpreadsheetDocumentType.Workbook)) byte[] xlsxInBytes; string xslxBase64; MemoryStream ms = new MemoryStream(); 

my code to populate the file

the code to save it and put it on base 64

workbookPart.Workbook.Save(); xlsxInBytes = ms.ToArray(); xslxBase64 = Convert.ToBase64String(xlsxInBytes); return Ok(xslxBase64); 

front end

downloadFile(data: string, contentType: string) {     // const contentType = 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet';     const blob = new Blob([data], { type: contentType });     // const url = window.URL.createObjectURL(blob);      // const test = atob(data);     console.log(blob);     const downloadLink = document.createElement('a');     document.body.appendChild(downloadLink);     downloadLink.href = 'data:application/' + contentType + ';base64, ' + encodeURI(blob.);     downloadLink.download = 'title.xlsx';     downloadLink.click();     document.body.removeChild(downloadLink);     // window.open(url);   } 

when i open the file it say it corrupted

1h40 to transfer in Sydney, one booking but can’t check baggage through

We booked a flight from Manila to Christchurch with 1hr 40mins layover at Sydney. Upon booking, the details indicated at Sydney-Christchurch flight, its still Qantas Airways but already operated by Emirates and, the “baggage is not checked in through” I asked the the customer service to clarify what does that mean. She said that upon arrival at sydney, we still need to pick up our baggages & check in again going to Christchurch.

My questions are:

1) I’d like to ask (for those who have already experienced this) if 1hr 40mins is enough from picking up the baggages and checking in again?

2) Are we going to line up now at Emirates & not in Qantas?

3) Do they have different line for checking in, baggage drop & just for transfers?

Please enlighten me. I am bothered by this because we might miss our flight going to Christchurch given the 1hr 40mins layover & checking in the baggages again. Thank you!