Backup to Azure failing

Getting Help
1

Hi all – I’m new to Restic and trying my first backup of about 4TB to Azure blob storage, and am seeing some strange behvaior / failures.

First of all, the backup was saying it was going to take around 14-17 days. Is that normal for that volume of data on “cool” blob Azure storage on a decent ~1G internet connection?

Here’s the last things I see that lead to the failure, with some things redacted:

uploaded intermediate index c6f2fe46
uploaded intermediate index 6712c792
uploaded intermediate index 8572f572
uploaded intermediate index 4e2e97e7
uploaded intermediate index 94269649
uploaded intermediate index 52ea7f73
uploaded intermediate index 1625766a
uploaded intermediate index 2b40fe74
Save(<lock/f1621524d6>) returned error, retrying after 554.857589ms: CreateBlockBlobFromReader: Put https://[redacted]: dial tcp: lookup [redacted].windows.net: Temporary failure in name resolution [redacted].mov
Save(<lock/f1621524d6>) returned error, retrying after 688.623729ms: CreateBlockBlobFromReader: Put https://[redacted]: dial tcp: lookup [redacted]: Temporary failure in name resolution [redacted].mov
uploaded intermediate index 962d901c
uploaded intermediate index 247e016f
uploaded intermediate index fb5521b0
uploaded intermediate index 34e34506
uploaded intermediate index 6e036e69
Save(<lock/edc692571c>) returned error, retrying after 468.004837ms: CreateBlockBlobFromReader: Put [redacted]: dial tcp [redacted]:443: i/o timeout mnt/[redacted].mov
uploaded intermediate index 6630023b
error: context canceled
Fatal: unable to save snapshot: CreateBlockBlobFromReader: Put https://[redacted]: net/http: HTTP/1.x transport connection broken: write tcp 192.168.50.12
3:56476->[redacted]:443: write: connection timed out

Any ideas? I can’t tell if it is having issues with reading the mounted file share that it is backing up, or if it is having network issues talking to Azure?

2

You’re using a quite old restic version. Please update to a recent version. The errors look like some network problems, although I’d recommend to first upgrade restic before trying anything else.

3

I have a dozen of VM doing a backup to Azure Storage every day and I never had any issue. Plus 2 NAS at home on a 5Mb/s upload (third world broadband) as well.

I sometimes get some retries though but never a complete fail.

2 Likes