.The GNU tar utility currently cannot extract archives directly into the Ceph Object Gateway NFS mounted file systems
The current version of the GNU tar utility makes overlapping write operations when extracting files. This behavior breaks the strict sequential write restriction in the current version of the Ceph Object Gateway NFS. In addition, GNU tar reports these errors in the usual way, but it also by default continues extracting the files after reporting the errors. As a result, the extracted files can contain incorrect data.
To work around this problem, use alternate programs to copy file hierarchies into the Ceph Object Gateway NFS. Recursive copying by using the `cp -r` command works correctly. Non-GNU archive utilities might be able to correctly extract the tar archives, but none have been verified.
DescriptionRamakrishnan Periyasamy
2017-02-02 10:28:11 UTC
Description of problem:
Decompression of folder in NFS mount fails with errors.
Tried compressing files using zip and tar which worked but while trying to decompress the folder and files, they are decompressed but command gives error message. This problem is there with zip/tar files but there is no errors observed in normal Linux directory.
[ubuntu@host003 nfs_mount]$ tar -xvf old.tar
old/
old/l
old/k
old/h
old/a
old/e
old/i
old/j
old/b
old/f
old/d
old/g
old/c
tar: old: Cannot utime: Input/output error
tar: Exiting with failure status due to previous errors
[ubuntu@host003 nfsuser_s3_dir]$ unzip old.zip
Archive: old.zip
creating: old/
chmod (directory attributes) error: Input/output error
warning: cannot set modif./access times for old/
Input/output error
warning: cannot set permissions for old/
Input/output error
warning: set times/attribs failed for old/
failed setting times/attribs for 1 dir entries[ubuntu@magna003 nfsuser_s3_dir]$ ls
Version-Release number of selected component (if applicable):
Ceph: 10.2.5-18.el7cp (6d6e431ef9e773beaa8ddc28b6c552d6f813b36a)
rgw: nfs-ganesha-rgw-2.4.2-1.el7cp.x86_64
How reproducible:
2/2
Steps to Reproduce:
1. Configure Ceph Cluster, RGW and NFS ganesha
2. Mount NFS mount to a client
3. Create some files and folders in NFS mount point
4. Compress one folder and decompress it using zip and tar.
Actual results:
decompression of folders and files works but there are error messages
Expected results:
There should not be any error message and data corruption
Additional info:
Do we have support for most options in zip ?, tried some options and its not compressing folder.
Description of problem: Decompression of folder in NFS mount fails with errors. Tried compressing files using zip and tar which worked but while trying to decompress the folder and files, they are decompressed but command gives error message. This problem is there with zip/tar files but there is no errors observed in normal Linux directory. [ubuntu@host003 nfs_mount]$ tar -xvf old.tar old/ old/l old/k old/h old/a old/e old/i old/j old/b old/f old/d old/g old/c tar: old: Cannot utime: Input/output error tar: Exiting with failure status due to previous errors [ubuntu@host003 nfsuser_s3_dir]$ unzip old.zip Archive: old.zip creating: old/ chmod (directory attributes) error: Input/output error warning: cannot set modif./access times for old/ Input/output error warning: cannot set permissions for old/ Input/output error warning: set times/attribs failed for old/ failed setting times/attribs for 1 dir entries[ubuntu@magna003 nfsuser_s3_dir]$ ls Version-Release number of selected component (if applicable): Ceph: 10.2.5-18.el7cp (6d6e431ef9e773beaa8ddc28b6c552d6f813b36a) rgw: nfs-ganesha-rgw-2.4.2-1.el7cp.x86_64 How reproducible: 2/2 Steps to Reproduce: 1. Configure Ceph Cluster, RGW and NFS ganesha 2. Mount NFS mount to a client 3. Create some files and folders in NFS mount point 4. Compress one folder and decompress it using zip and tar. Actual results: decompression of folders and files works but there are error messages Expected results: There should not be any error message and data corruption Additional info: Do we have support for most options in zip ?, tried some options and its not compressing folder.