[Lustre-discuss] e2scan question

[Wojciech Turek]

We are using e2scan since few days and we have noticed that date 
specification is not being processed correctly by e2scan.
 > date
Fri Apr  3 15:56:49 BST 2009
 >  /usr/sbin/e2scan -C /ROOT -l -N "2009-03-29 19:44:00" /dev/dm-0 > 
file_list
generating list of files with
        mtime newer than Sun Mar 29 15:56:54 2009
        ctime newer than Sun Mar 29 15:56:54 2009
inode bitmap is read, 0 seconds
visible root: "/ROOT"
scanning inode tables ..

However solution for us is to use epoch time format.
Let me know if it works for you.

Cheers

Wojciech

Chad Kerner wrote:
> We have been trying to use e2scan to generate a list of files that were 
> changed since a specific date.  We are seeing that it has been missing 
> some of the modified files and was wondering if anyone else has seen 
> this behavior.
>
> I executed:
> e2scan -N "Mar 27 08:00:00 2009" /dev/mapper/mdt_scratch > chad.out
>
> [root at abe-mds04 projects_sync]# grep ILRocstar chad.out
> ./ROOT/.projects/roc/fnajjar/ILRocstar
> [root at abe-mds04 projects_sync]#
>
> The following list is a very small subset of files within this directory 
> that were changed after the scan date:
> [root at abe-bk1 ILRocstar]# pwd
> /cfs/scratch/.projects/roc/fnajjar/ILRocstar
> [root at abe-bk1 ILRocstar]# ls -lR | grep "Mar 28"
> drwxr-x---  4 fnajjar gac    4096 Mar 28 00:56 RSRM105_3D_HG
> drwxr-x--- 2 fnajjar gac  4096 Mar 28 00:56 Turb_LES
> -rw------- 1 fnajjar gac      4424 Mar 28 01:05 IVHG_j01.o863001
> -rw------- 1 fnajjar gac      4412 Mar 28 02:00 IVHG_j02.o863005
> -rw------- 1 fnajjar gac      4427 Mar 28 05:53 IVHG_j03.o863017
> -rw------- 1 fnajjar gac      5616 Mar 28 06:54 IVHG_j04.o863026
> -rw------- 1 fnajjar gac      5084 Mar 28 11:47 IVHG_j05.o863591
> -rw------- 1 fnajjar gac      4489 Mar 28 11:58 IVHG_j06.o863592
> -rw------- 1 fnajjar gac      4428 Mar 28 20:55 IVHG_j07.o863637
>
> [root at abe-bk1 ILRocstar]# ls -lR | grep "Mar 28" | wc -l
> 164
> [root at abe-bk1 ILRocstar]#
>
>
> We are wanting to use e2scan to generate a list of files to back up with 
> tivoli, because it is much faster to pass tivoli a list than have it 
> traverse the entire tree.  However, it looks like e2scan can't be 
> trusted to generate a valid list.
>
> The version of e2scan we are running is:
> [root at abe-mds04 projects_sync]# rpm -qilf `which e2scan`
> Name        : e2fsprogs                    Relocations: (not relocatable)
> Version     : 1.40.11.sun1                      Vendor: (none)
> Release     : 0redhat                       Build Date: Thu 10 Jul 2008 11:21:23 AM CDT
> Install Date: Sat 20 Dec 2008 04:07:31 AM CST      Build Host: lts-build-x86-64-0.co.cfs
> Group       : System Environment/Base       Source RPM: e2fsprogs-1.40.11.sun1-0redhat.src.rpm
> Size        : 2085263                          License: GPLv2
> Signature   : (none)
> URL         : ftp://ftp.lustre.org/pub/lustre/other/e2fsprogs/
> Summary     : Utilities for managing the second and third extended 
> (ext2/ext3) filesystems
> Description :
>
>
> Any thoughts or suggestions would be greately appreciated.
>
> Thanks,
> Chad
> --
> Chad Kerner - ckerner at ncsa.uiuc.edu
> Systems Engineer, Storage Enabling Technologies
> National Center for Supercomputing Applications
> http://www.ncsa.uiuc.edu/~ckerner
>
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