Title: [Plugin: Backup Scheduler] Corrupted Backups? Last modified: August 20, 2016 --- # [Plugin: Backup Scheduler] Corrupted Backups? * Resolved [elbasunu](https://wordpress.org/support/users/elbasunu/) * (@elbasunu) * [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-backup-scheduler-corrupted-backups/) * I can’t seem to extract the zip archives using any zip tools whatsoever (7z, winrar, winzip) . They appear to be corrupt. * All of them. Am I missing something here? * [http://wordpress.org/extend/plugins/backup-scheduler/](http://wordpress.org/extend/plugins/backup-scheduler/) Viewing 15 replies - 1 through 15 (of 17 total) 1 [2](https://wordpress.org/support/topic/plugin-backup-scheduler-corrupted-backups/page/2/?output_format=md) [→](https://wordpress.org/support/topic/plugin-backup-scheduler-corrupted-backups/page/2/?output_format=md) * Plugin Author [Sed Lex](https://wordpress.org/support/users/sedlex/) * (@sedlex) * [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-backup-scheduler-corrupted-backups/#post-2560154) * i have detect a bug which create corrupted zip in very few cases ! Do you want to beta test the new plugin ? * If so please contact me through the feedback tab in the plugin configuration page. I will send you a new version * Plugin Author [Sed Lex](https://wordpress.org/support/users/sedlex/) * (@sedlex) * [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-backup-scheduler-corrupted-backups/#post-2560155) * Actually, I have release a new version … could you try ? * Plugin Author [Sed Lex](https://wordpress.org/support/users/sedlex/) * (@sedlex) * [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-backup-scheduler-corrupted-backups/#post-2560165) * Any news ? any feedback so that I could know if your problem is solved ? * Plugin Author [Sed Lex](https://wordpress.org/support/users/sedlex/) * (@sedlex) * [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-backup-scheduler-corrupted-backups/#post-2560175) * Could you tell us if your problem is now solved ? Please ? * Would be very helpful * [jplanglais](https://wordpress.org/support/users/jplanglais/) * (@jplanglais) * [14 years, 3 months ago](https://wordpress.org/support/topic/plugin-backup-scheduler-corrupted-backups/#post-2560210) * I’m having this problem as well, with the latest version (1.2.6) * Also my total backup should be less than 10Mb and even tough I’ve set the maximum file size of 50mb it still breaks down in 2 files: 10.75Mb and 159K * I can beta test for you. * Plugin Author [Sed Lex](https://wordpress.org/support/users/sedlex/) * (@sedlex) * [14 years, 3 months ago](https://wordpress.org/support/topic/plugin-backup-scheduler-corrupted-backups/#post-2560211) * Hi, * It is normal to have at least 2 files One for the data one for the summary of the zip files … It is due to splitted zip format 🙂 * When you try to open the files it is not working ? * [jplanglais](https://wordpress.org/support/users/jplanglais/) * (@jplanglais) * [14 years, 3 months ago](https://wordpress.org/support/topic/plugin-backup-scheduler-corrupted-backups/#post-2560212) * No, I get a corrupted archive, like the OP. * FYI: One file is .zip and the other one is .z01 * I retreived an old backup (don’t know hat version was used) that has only one zip file it it’s working correctly. It seems to be happening since the files are splitted. * Plugin Author [Sed Lex](https://wordpress.org/support/users/sedlex/) * (@sedlex) * [14 years, 3 months ago](https://wordpress.org/support/topic/plugin-backup-scheduler-corrupted-backups/#post-2560213) * Could you contact me through the feedback tab of the plugin ? So I will know your email and your parameters * [w0rdpr3ss](https://wordpress.org/support/users/w0rdpr3ss/) * (@w0rdpr3ss) * [13 years, 4 months ago](https://wordpress.org/support/topic/plugin-backup-scheduler-corrupted-backups/#post-2560285) * Unfortunately, I think this bug is still existing on Version 1.4.2 * unzip BackupScheduler_20130120101852_osgimbp3ma.zip Archive: BackupScheduler_20130120101852_osgimbp3ma. zip Compressed/Splitted by the SL framework (SedLex) warning [BackupScheduler_20130120101852_osgimbp3ma. zip]: zipfile claims to be last disk of a multi-part archive; attempting to process anyway, assuming all parts have been concatenated together in order. Expect “ errors” and warnings…true multi-part support doesn’t exist yet (coming soon). file #1: bad zipfile offset (local header sig): 4 file #2: bad zipfile offset( local header sig): 50 file #3: bad zipfile offset (local header sig): 105 file# 4: bad zipfile offset (local header sig): 162 file #5: bad zipfile offset (local header sig): 220 file #6: bad zipfile offset (local header sig): 278 file #7: bad zipfile offset (local header sig): 337 file #8: bad zipfile offset (local header sig): 397 file #9: bad zipfile offset (local header sig): 458 file #10: bad zipfile offset (local header sig): 519 file #11: bad zipfile offset (local header sig): 581 file #12: bad zipfile offset (local header sig): 643 file #13: bad zipfile offset (local header sig): 706 file #14: bad zipfile offset (local header sig): 769 ….. * No way to unpack the backups under linux :s * Plugin Author [Sed Lex](https://wordpress.org/support/users/sedlex/) * (@sedlex) * [13 years, 4 months ago](https://wordpress.org/support/topic/plugin-backup-scheduler-corrupted-backups/#post-2560286) * Hum… I do not know if the unzip command for Linux/Unix work correctly. Have you try with WinZip Winrar IZArc (windows) or Unarchiver (Macos) ? * [w0rdpr3ss](https://wordpress.org/support/users/w0rdpr3ss/) * (@w0rdpr3ss) * [13 years, 4 months ago](https://wordpress.org/support/topic/plugin-backup-scheduler-corrupted-backups/#post-2560287) * The unzip command under linux work fine if the archive is correct. Example: * % unzip wordpress-3.5.1.zip Archive: wordpress-3.5.1.zip creating: wordpress/ inflating: wordpress/license.txt inflating: wordpress/wp-activate.php inflating: wordpress/wp-login.php inflating: wordpress/readme.html inflating: wordpress/ wp-blog-header.php inflating: wordpress/wp-cron.php …… and so on % ls wordpress wordpress-3.5.1.zip % du -s wordpress 15M wordpress * I’m sorry but I can’t test using Windows or MacOS because I don’t have this 2 OS. * Plugin Author [Sed Lex](https://wordpress.org/support/users/sedlex/) * (@sedlex) * [13 years, 4 months ago](https://wordpress.org/support/topic/plugin-backup-scheduler-corrupted-backups/#post-2560288) * Hum … as it is indicated in your log `Expect "errors" and warnings...true multi- part support doesn't exist yet (coming soon).` * Your last try is not a multipart zip files. * The generated file is **correct **but splitted * [w0rdpr3ss](https://wordpress.org/support/users/w0rdpr3ss/) * (@w0rdpr3ss) * [13 years, 4 months ago](https://wordpress.org/support/topic/plugin-backup-scheduler-corrupted-backups/#post-2560289) * I hope that this can be fixed in your next release. It’s normal that some people don’t have other OS. * Or what about to give other possibility for the compression. (tar, gz, bz, rar, lzma, xz, …) some of them should exist on any company that provide hosting * Plugin Author [Sed Lex](https://wordpress.org/support/users/sedlex/) * (@sedlex) * [13 years, 4 months ago](https://wordpress.org/support/topic/plugin-backup-scheduler-corrupted-backups/#post-2560290) * I cannot fix with a release of my plugin a “bug” (or a mis-support) in the zip/ unzip function **in Linux**. * The other compression method does not allow the split archive (according to my knowledge). When you save 350 Mo of data, it is impossible to handle it in only one file due to memory limitation in most of the hosting services * [w0rdpr3ss](https://wordpress.org/support/users/w0rdpr3ss/) * (@w0rdpr3ss) * [13 years, 4 months ago](https://wordpress.org/support/topic/plugin-backup-scheduler-corrupted-backups/#post-2560291) * Hello Sed, * I understand. So please just add that for restore we need to use another OS. For me I was surprised when I tried to test the restore and was blocked with this. * For info, you have right, spliting is **almost** impossible using a direct archiving command line. But you can pipe the archive to the program “split”. Split is provided by coreutils in Linux * > GNU core utilities: This package contains the basic file, shell and text manipulation > utilities which are expected to exist on every operating system. * Without split, it’s possible to do it with rar. * rar a -ol -m3 -v**size**b -Idp — /tmp/files.rar @/file-list Viewing 15 replies - 1 through 15 (of 17 total) 1 [2](https://wordpress.org/support/topic/plugin-backup-scheduler-corrupted-backups/page/2/?output_format=md) [→](https://wordpress.org/support/topic/plugin-backup-scheduler-corrupted-backups/page/2/?output_format=md) The topic ‘[Plugin: Backup Scheduler] Corrupted Backups?’ is closed to new replies. * ![](https://s.w.org/plugins/geopattern-icon/backup-scheduler_f8f7f7.svg) * [Backup Scheduler](https://wordpress.org/plugins/backup-scheduler/) * [Frequently Asked Questions](https://wordpress.org/plugins/backup-scheduler/#faq) * [Support Threads](https://wordpress.org/support/plugin/backup-scheduler/) * [Active Topics](https://wordpress.org/support/plugin/backup-scheduler/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/backup-scheduler/unresolved/) * [Reviews](https://wordpress.org/support/plugin/backup-scheduler/reviews/) * 17 replies * 4 participants * Last reply from: [w0rdpr3ss](https://wordpress.org/support/users/w0rdpr3ss/) * Last activity: [13 years, 4 months ago](https://wordpress.org/support/topic/plugin-backup-scheduler-corrupted-backups/page/2/#post-2560293) * Status: resolved