Bug 1398082
| Summary: | ReaR didn't recover ACL attribute of files | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | JongYoung Moon <jmoon> |
| Component: | rear | Assignee: | Jakub Mazanek <jmazanek> |
| Status: | CLOSED NOTABUG | QA Contact: | qe-baseos-daemons |
| Severity: | urgent | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 7.2 | CC: | gratien.dhaese, praiskup, tcerna |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2017-02-23 15:49:27 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | |||
| Bug Blocks: | 1400961 | ||
This is not a rear bug. It seems to be a bug in tar utility. If you believe this should be fixed, please file a bug to tar example: [root@unused-4-187 tmp]# setfacl -m u:jmazanek:r hello_file [root@unused-4-187 tmp]# getfacl hello_file # file: hello_file # owner: jmazanek # group: jmazanek user::rw- user:jmazanek:r-- group::rw- mask::rw- other::r-- [root@unused-4-187 tmp]# tar --acls -vczf hello.tar.gz hello_file hello_file [root@unused-4-187 tmp]# tar -xvzf hello.tar.gz hello_file [root@unused-4-187 tmp]# getfacl hello_file # file: hello_file # owner: jmazanek # group: jmazanek user::rw- group::rw- other::r-- (In reply to Jakub Mazanek from comment #2) > [root@unused-4-187 tmp]# tar -xvzf hello.tar.gz > hello_file Extended attributes are not extracted by default, at least not these days. So to make it work, we need to use 'tar --acls -xf hello.tar.gz'. See also the content of https://github.com/rear/rear/issues/1175 - I believe there are issues in tar itself with xattr and capabilities. |
- Description of problem: Although applying the following backup options so that ACL could be backed up and recovered for the certain files when backing filesystem up, ACL could not be applied after recovering. - Version-Release number of selected component (if applicable): RHEL 7.2 rear-1.17.2-1.el7.noarch - How reproducible: Always - Steps to Reproduce: 01. Created VM 02. Installed RHEL 7.2 03. Configured local repository after mount ISO installation image. 04. Install rear package $ yum install rear 05. Configure /etc/reare/local.conf OUTPUT=ISO OUTPUT_URL=nfs://xxx.xxx.xxx.xxx/sswp_appshr/backup BACKUP=NETFS BACKUP_URL=nfs://xxx.xxx.xxx.xxx/sswp_appshr/backup BACKUP_PROG=tar BACKUP_PROG_OPTIONS="--anchored --acls --xattrs" BACKUP_TYPE=incremental FULLBACKUPDAY="Mon" BACKUP_PROG_EXCLUDE=("${BACKUP_PROG_EXCLUDE[@]}" '/media' '/var/tmp' '/var/crash' '/var/mqm' '/applog' '/oraclient' '/appsw' '/infsw' '/infha4' '/appcore' '/appbin' '/appwrk' '/inftmp' '/appshr' '/applog') 06. Run the following command. @ setfacl -m u:<user>:r /var/log/messages 07. Create backup $ rear -d -D mkbackup 08. Confirm if backup is created. We confirmed if backup data and ISO image are created in local /backup directory and backup directory in NFS Server. 09. Perform recovery with rear ISO created. 10. Recover from rear ISO and the reboot. 11. Confirm if ACL is properly applied with the following command. $ getfacl /var/log/messages 12. You could see that ACL before backup is not applied. - Actual results: ACL changed is not applied after recovery via rear ISO. - Expected results: ACL changed should be applied after recovery via rear ISO. - Additional info: Here are the configuration and log file that we'd seen /etc/rear/local.conf OUTPUT=ISO OUTPUT_URL=nfs://xxx.xxx.xxx.xxx/sswp_appshr/backup BACKUP=NETFS BACKUP_URL=nfs://xxx.xxx.xxx.xxx/sswp_appshr/backup BACKUP_PROG=tar BACKUP_PROG_OPTIONS="--anchored --acls --xattrs" BACKUP_TYPE=incremental FULLBACKUPDAY="Mon" BACKUP_PROG_EXCLUDE=("${BACKUP_PROG_EXCLUDE[@]}" '/media' '/var/tmp' '/var/crash' '/var/mqm' '/applog' '/oraclient' '/appsw' '/infsw' '/infha4' '/appcore' '/appbin' '/appwrk' '/inftmp' '/appshr' '/applog') We see the following "Warning" messages when checking log files regarding recover. Warning: Cannot acl_from_text 2016-11-10 08:58:21 Including restore/NETFS/default/38_prepare_multiple_isos.sh 2016-11-10 08:58:21 Including restore/NETFS/default/40_restore_backup.sh 2016-11-10 08:58:21 Decrypting disabled 2016-11-10 08:58:21 Restoring tar archive '/tmp/rear.yRb6VE9IiDq3wUW/outputfs/skt-sswpbt04/2016-11-10-1743-I.tar.gz' 2016-11-10 08:58:21 dd if=/tmp/rear.yRb6VE9IiDq3wUW/outputfs/skt-sswpbt04/2016-11-10-1736-F.tar.gz | cat | tar --block-number --totals --verbose --anchored --acls --xattrs --gzip -C /mnt/local/ -x -f - tar: var/log/messages: Warning: Cannot acl_from_text 10003278+1 records in 10003278+1 records out 5121678690 bytes (5.1 GB) copied, 65.728 s, 77.9 MB/s Total bytes read: 11235604480 (11GiB, 164MiB/s) 2016-11-10 08:59:31 dd if=/tmp/rear.yRb6VE9IiDq3wUW/outputfs/skt-sswpbt04/2016-11-10-1743-I.tar.gz | cat | tar --block-number --totals --verbose --anchored --acls --xattrs --gzip -C /mnt/local/ -x -f - tar: var/log/messages: Warning: Cannot acl_from_text 10003847+1 records in 10003847+1 records out 5121969805 bytes (5.1 GB) copied, 92.0977 s, 55.6 MB/s We see this issue when checking if ACL is properly applied or not at the filesystem recovered as running "rear recover" after entering Recovery menu since booting with "Rear ISO" media.