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Accepted
RobbieTheK
Asked: 2017-01-08 11:36:41 +0800 CST

Fedora 25 tar errors from backup script aquota.user: Cannot time Operation not permitted

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We just upgraded to Fedora 25 and re-enabled our tar/gzip backups to our Drobo units.

These errors just started happening after re-enabling the backups. 

gzip: stdout: Input/output error
/bin/tar: Child returned status 1
/bin/tar: Error is not recoverable: exiting now

STANDARD OUTPUT:
Backed up /home to /drobo/home.tgz

Backup of /home/users FAILED

Backed up /home/users to
home-users-FAILED.tgz
/bin/tar: home/users/aquota.user: Cannot utime: Operation not permitted

I know that the aquota.user file is set to be immutable:

lsattr aquota.user 

----i--A------e---- aquota.user

So I tried this:

# chattr -iAe aquota.user
chattr: Operation not permitted while setting flags on aquota.user

So I tried to add these flags to the tar command in our backup script:

--no-overwrite-dir --preserve-permissions

The errors continue. Any ideas?

quota file-permissions tar

2 Answers

  1. The file belongs to your quota system and you should leave it untouched. Just add that file your exclude list in your tar command.

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  2. Best Answer

    I received a reply from one of the GNU tar maintainers:

    Exclude-related options are "position-sensitive"; you need to move the 'home/users' argument to the end of the command (after --exclude=aquota.user).

    So in our /etc/drobo-backup.conf file, we can't have any exclude options in the backup directive like we had:

    backup = /home/users --atime-preserve --exclude=aquota.user  --exclude=.gvfs --exclude=--exclude-ignore-recursive=S.gpg-agent

    Once we changed it to simply:

    backup = /home/users

    And placed them in this directive:

    tarargs= --one-file-system --warning=no-file-ignored --warning=no-file-changed --warning=no-file-removed --use-compress-program=pigz  --atime-preserve --exclude=.gvfs

    No more errors. So I simply created a separate cron backup to backup just the aquota.user file.

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