BackWPup can't create ZIPs larger than 4 GB

(@cbruegg)

I’ve been successfully creating TAR backups (about 12 GB), but after switching to ZIP the backups fail all the time. A backup file is uploaded to S3 with a size of 4.01 GB. I suspect the reason is that BackWPup doesn’t split the archive to compensate for the 4 GB ZIP limit and it doesn’t use ZIP64 either.
Here’s the log:

[INFO] BackWPup 3.3; A project of Inpsyde GmbH
[INFO] Log Level: Normal (translated)
[INFO] BackWPup job: Daily to S3
[INFO] Logfile is: backwpup_log_08fe03_2016-04-01_03-00-07.html
[INFO] Backup file is: xxx_2016-04-01_03-00-07.zip
[01-Apr-2016 03:00:07] 1. Try to backup database …
[01-Apr-2016 03:00:08] Connected to database xxx on localhost
[01-Apr-2016 03:01:05] Added database dump "xxx.sql" with 181,10 MB to backup file list
[01-Apr-2016 03:01:05] Database backup done!
[01-Apr-2016 03:01:05] 1. Trying to make a list of folders to back up …
[01-Apr-2016 03:01:10] Added "wp-config.php" to backup file list
[01-Apr-2016 03:01:10] 839 folders to backup.
[01-Apr-2016 03:01:10] 1. Trying to generate a file with installed plugin names …
[01-Apr-2016 03:01:10] Added plugin list file "XYZ.pluginlist.2016-04-01.txt" with 4,91 kB to backup file list.
[01-Apr-2016 03:01:10] 1. Trying to generate a manifest file …
[01-Apr-2016 03:01:10] Added manifest.json file with 6,71 kB to backup file list.
[01-Apr-2016 03:01:10] 1. Trying to create backup archive …
[01-Apr-2016 03:01:10] Compressing files as ZipArchive. Please be patient, this may take a moment.
[01-Apr-2016 03:32:04] WARNING: ZipArchive::close(): Invalid or unitialized Zip object
[01-Apr-2016 03:32:04] ERROR: ZIP archive cannot be closed correctly.
[01-Apr-2016 03:32:05] ERROR: Cannot create backup archive correctly. Aborting creation.
[01-Apr-2016 03:32:07] 2. Trying to create backup archive …
[01-Apr-2016 03:32:07] Compressing files as ZipArchive. Please be patient, this may take a moment.
[01-Apr-2016 04:05:41] WARNING: ZipArchive::close(): Invalid or unitialized Zip object
[01-Apr-2016 04:05:41] ERROR: ZIP archive cannot be closed correctly.
[01-Apr-2016 04:05:42] ERROR: Cannot create backup archive correctly. Aborting creation.
[01-Apr-2016 04:05:43] 3. Trying to create backup archive …
[01-Apr-2016 04:05:43] Compressing files as ZipArchive. Please be patient, this may take a moment.
[01-Apr-2016 04:37:53] WARNING: ZipArchive::close(): Invalid or unitialized Zip object
[01-Apr-2016 04:37:53] ERROR: ZIP archive cannot be closed correctly.
[01-Apr-2016 04:37:54] ERROR: Cannot create backup archive correctly. Aborting creation.
[01-Apr-2016 04:37:54] ERROR: Step aborted: too many attempts!
[01-Apr-2016 04:37:54] 1. Trying to send backup file to S3 Service …
[01-Apr-2016 04:37:57] Connected to S3 Bucket "aasbackupeu" in eu-west-1
[01-Apr-2016 04:37:57] Checking for not aborted multipart Uploads …
[01-Apr-2016 04:37:57] Starting upload to S3 Service …
[01-Apr-2016 04:43:27] Backup transferred to XXX.
[01-Apr-2016 04:43:28] One file deleted on S3 Bucket.
[01-Apr-2016 04:43:28] One old log deleted
[01-Apr-2016 04:43:28] ERROR: Job has ended with errors in 6201 seconds. You must resolve the errors for correct execution.

https://wordpress.org/plugins/backwpup/

Viewing 5 replies - 1 through 5 (of 5 total)

Plugin Author Daniel Hüsken
(@danielhuesken)

8 years ago

BackWPup uses the ZipArchive class from PHP. I will do some testing.

Thread Starter cbruegg
(@cbruegg)

8 years ago

Perhaps consider this? https://github.com/vobruba-martin/php-zip64

Thread Starter cbruegg
(@cbruegg)

8 years ago

Any update on this? I should probably clarify the motivation of switching to ZIPs:

1) Indexing: Tars are not indexed and thus a big archive needs to be extracted completely, even if you only want one file out of it.
2) Filename and paths are very restricted in their length, so my backups are always missing some files.

ZIP64 support would eliminate both of these issues. In other software, ZIP64 support is very common, for example Windows supports the format since Vista. Additionally, I think it’s very common for older blogs and online magazines to have more than 4 GB of media files in their CMS, which of course needs to be backed up.

Plugin Author Daniel Hüsken
(@danielhuesken)

7 years, 12 months ago

No Update, but i have an eye on it.

webtent
(@webtent)

7 years, 11 months ago

I have same problem for the same reasons. I’m not finding an answer to the 4GB limit in ZipArchive class, a split feature is needed.

Viewing 5 replies - 1 through 5 (of 5 total)

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