backupd IOERROR reading backup files larger than 2GB

ellie timoney ellie at
Wed Jun 5 22:04:51 EDT 2019

It kinda sounds like your platform might be 32bit? Or your zlib is compiled to use 32bit integer sizes?

On Mon, Jun 3, 2019, at 10:07 PM, Carlos Larrañaga wrote:
> Hi,
> We're testing backup feature un cyrus-imapd 3.0.10. There's no problem when backup is created first time, but when the backup already exists and is larger than 2GB, we get the following error from the backupd: 
>> cyrus/backupd[xxxx]: IOERROR: gzuc_read: lseek 12: No such file or directory
> As said, it happens only when then backup file already exists and is larger than 2GB. The backupd process keeps reading de compressed backup file til sync_client exit with "Error from sync_do_user(xxx): bailing out!".
>  We use xfs with latest CentOs. Seems like backupd is unable to read the compressed backup file.
>  Anyone else with this problem? Any idea how to fix it? 
> Thanks in advance for your help.
>  Best regards,
>  Carlos.
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