B2 transmission errors

Tim Brodie    Jan 17 5:51PM 2018

We can't seem to get reliable transmissions of backups to our BackBlaze B2 bucket. After sending for a while, we get an error "Failed to send request post https://pod-000-1099-09.backblaze.com/b2api/v1/b2_upload_file/..._t0024: HTTPSConnectionPool(host='pod-000-1099-09.backblaze.com', port=443): Max retries exceeded with url: /b2api/v1/b2_upload_file/..._t0024 (Caused by NewConnectionError(': Failed to establish a new connection: [Errno 111] Connection refused',))

We're running on ESXi v5.5, patched to current. Ideas?

gchen    Jan 17 8:16PM 2018

Can you run ./vertical -vv --log backup vm_name and post the output here (or email to vertical-backup-support@acrosync.com)?

Tim Brodie    Jan 19 12:40PM 2018

I've emailed a DropBox link to the address above. Thanks for your help!

Tim Brodie    Jan 19 1:45PM 2018

Oh, and if I try to restart the backup again with the same command line, it fails with:

2018-01-19 18:41:14.493095 INFO BACKUP_LISTING No previous backup found. Listing existing chunks Traceback (most recent call last): File "vertical_main.py", line 145, in File "vertical_backup.py", line 449, in backupCommand File "vertical_backup.py", line 473, in backupVM File "vertical_snapshot.py", line 356, in createSnapshot File "vertical_snapshot.py", line 261, in listChunkFiles File "vertical_b2storage.py", line 300, in listFiles MemoryError Failed to execute script vertical_main

gchen    Jan 19 2:22PM 2018

It looks like the B2 upload server rejected the connection. I don't know why, but you can increase the number of retries by setting VB_MAX_RETRIES to 16. The default is 8, but if it is a connection error, the number of retries is half of that.

For the memory error, you can run the backup command as:

./vertical backup --no-chunk-listing vmname

With this --no-chunk-listing option, Vertical Backup will not attempt to list all chunks in the storage and construct a chunk cache in memory. The downside of this option is that for each chunk that already exists in the storage, a lookup is needed to determine if the chunk upload can be skipped.

Tim Brodie    Jan 20 2:31PM 2018

I'm probably doing something wrong here, but I get a "error: unrecognized arguments: --no-chunk-listing" error when I try that option. That option also doesn't show up for ./vertical backup -h. Am I running the correct version (1.1.5)?

gchen    Jan 20 10:54PM 2018

If you download the latest 1.1.5 build from http://acrosync.com/esxi/vertical it should have this option. The sha256 of the latest build is 11a9459a2a93047d16fe5e9399186c33f383e8843ac19b601527cc543eb897bf.

Tim Brodie    Jan 21 12:43AM 2018

This is what I see when getting the latest version: /vmfs/volumes/5839ff6b-b37d5a97-9435-6805ca0a89c0/verticalbackup # wget http://verticalbackup.com/esxi/vertical

Connecting to verticalbackup.com ( vertical 100% |***********************************************************************************| 10472k 0:00:00 ETA

/vmfs/volumes/5839ff6b-b37d5a97-9435-6805ca0a89c0/verticalbackup # chmod u+x vertical

/vmfs/volumes/5839ff6b-b37d5a97-9435-6805ca0a89c0/verticalbackup # ./vertical -vv backup --threads 8 --no-chunk-listing -l 30000 2008R2\ Mail\ Server usage: vertical [-h] [-v] [--log] [--disable-script] [--print-stack]


vertical: error: unrecognized arguments: --no-chunk-listing

gchen    Jan 21 1:39PM 2018

It is http://acrosync.com/esxi/vertical, not http://verticalbackup.com/esxi/vertical:

[root@esxi55:/opt/vertical] wget http://acrosync.com/esxi/vertical 
Connecting to acrosync.com (
vertical             100% |****************************************************************************************************************************************************| 10472k  0:00:00 ETA
[root@esxi55:/opt/vertical] sha256sum vertical
11a9459a2a93047d16fe5e9399186c33f383e8843ac19b601527cc543eb897bf  vertical
[root@esxi55:/opt/vertical] chmod u+x vertical
[root@esxi55:/opt/vertical] ./vertical backup -h
usage: vertical backup [-h] [-p] [--no-quiesce] [-t TAG] [--threads THREADS]
                       [-l LIMIT_RATE] [-e EXCLUDES] [--email]
                       [--subject EMAIL_SUBJECT]
                       [--failure-subject FAILURE_SUBJECT] [--parallel]
                       [--exclude-disk EXCLUDED_DISKS] [--no-chunk-listing]
                       [vmname [vmname ...]]

positional arguments:
  vmname                the name of the virtual machine to back up

optional arguments:
  -h, --help            show this help message and exit
  -p, --preserve-snapshots
                        don't remove or create snapshots
  --no-quiesce          do not quiesce the virtual machine before the backup
  -t TAG, --tag TAG     specify a backup tag
  --threads THREADS     number of uploading threads
  -l LIMIT_RATE, --limit-rate LIMIT_RATE
                        limit the upload speed (KiloBytes/sec)
  -e EXCLUDES, --exclude EXCLUDES
                        do not backup the virtual machine with this name
  --email               email log after backup is done
  --subject EMAIL_SUBJECT
                        the subject of the email to be sent
  --failure-subject FAILURE_SUBJECT
                        the email subject to use when backup fails
  --parallel            allow multiple backups at the same time
  --exclude-disk EXCLUDED_DISKS
                        do not backup the disk with this name
  --no-chunk-listing    do not list chunks for initial backup

Tim Brodie    Jan 22 12:02AM 2018

The Guide page has the wrong link on it then. Thanks.

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