Am Freitag 15 Juni 2007 schrieb Martin Steigerwald:
> Hello Eric!
>
> Well also from the man page as I just found out after sending my mail:
>
> "xfs_fsr can be called with one or more arguments naming filesystems
> (block device name), and files to reorganize. In this mode xfs_fsr
> does not read or write /var/tmp/.fsrlast_xfs nor does it run for a
> fixed time interval. It makes one pass through each specified regular
> file and all regular files in each specified filesystem. A command
> line name referring to a symbolic link (except to a file system
> device), FIFO, or UNIX domain socket generates a warning message, but
> is otherwise ignored. While traversing the filesystem these types of
> files are silently skipped."
>
> So maybe something along the lines of:
>
> xfs_fsr ~/Mail/.trash.index
>
> while it is open by KMail should be enough. I think I will give this a
> try soon.
Hello!
Hmmm, could not reproduce it with a single file. xfs_fsr seems to be
behaving correctly:
shambala:Mail/.Lichtvoll.directory/.Linux.directory>
xfs_bmap -v .Kernel.index
.Kernel.index:
EXT: FILE-OFFSET BLOCK-RANGE AG AG-OFFSET TOTAL
0: [0..167]: 83985960..83986127 15 (1586760..1586927) 168
1: [168..175]: 83985824..83985831 15 (1586624..1586631) 8
shambala:Mail/.Lichtvoll.directory/.Linux.directory> md5sum .Kernel.index
9d1fdd1138e297fd97548a3a4696e308 .Kernel.index
Started Kontact (KMail)...
shambala:Mail/.Lichtvoll.directory/.Linux.directory> md5sum .Kernel.index
9d1fdd1138e297fd97548a3a4696e308 .Kernel.index
shambala:Mail/.Lichtvoll.directory/.Linux.directory> lsof .Kernel.index
COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME
kontact 15985 martin mem REG 8,2 86497 254828298 .Kernel.index
kontact 15985 martin 23u REG 8,2 86497 254828298 .Kernel.index
shambala:Mail/.Lichtvoll.directory/.Linux.directory>
cp -a .Kernel.index .Kernel.index.old
shambala:Mail/.Lichtvoll.directory/.Linux.directory>
md5sum .Kernel.index.old
9d1fdd1138e297fd97548a3a4696e308 .Kernel.index.old
shambala:Mail/.Lichtvoll.directory/.Linux.directory> md5sum .Kernel.index
9d1fdd1138e297fd97548a3a4696e308 .Kernel.index
Trying to defragment while file is open: xfs_fsr seems to leave the file
alone completely like it should.
shambala:Mail/.Lichtvoll.directory/.Linux.directory> xfs_fsr .Kernel.index
shambala:Mail/.Lichtvoll.directory/.Linux.directory>
xfs_bmap -v .Kernel.index
.Kernel.index:
EXT: FILE-OFFSET BLOCK-RANGE AG AG-OFFSET TOTAL
0: [0..167]: 83985960..83986127 15 (1586760..1586927) 168
1: [168..175]: 83985824..83985831 15 (1586624..1586631) 8
shambala:Mail/.Lichtvoll.directory/.Linux.directory> md5sum .Kernel.index
9d1fdd1138e297fd97548a3a4696e308 .Kernel.index
Also on a second try
shambala:Mail/.Lichtvoll.directory/.Linux.directory> xfs_fsr .Kernel.index
shambala:Mail/.Lichtvoll.directory/.Linux.directory>
xfs_bmap -v .Kernel.index
.Kernel.index:
EXT: FILE-OFFSET BLOCK-RANGE AG AG-OFFSET TOTAL
0: [0..167]: 83985960..83986127 15 (1586760..1586927) 168
1: [168..175]: 83985824..83985831 15 (1586624..1586631) 8
shambala:Mail/.Lichtvoll.directory/.Linux.directory> md5sum .Kernel.index
9d1fdd1138e297fd97548a3a4696e308 .Kernel.index
Stopping Kontact (KMail) and trying to defragment then... well now it
defragments. md5sum stays the fine.
shambala:Mail/.Lichtvoll.directory/.Linux.directory> md5sum .Kernel.index
9d1fdd1138e297fd97548a3a4696e308 .Kernel.index
shambala:Mail/.Lichtvoll.directory/.Linux.directory> xfs_fsr .Kernel.index
shambala:Mail/.Lichtvoll.directory/.Linux.directory>
xfs_bmap -v .Kernel.index
.Kernel.index:
EXT: FILE-OFFSET BLOCK-RANGE AG AG-OFFSET TOTAL
0: [0..175]: 86612448..86612623 15 (4213248..4213423) 176
shambala:Mail/.Lichtvoll.directory/.Linux.directory> md5sum .Kernel.index
9d1fdd1138e297fd97548a3a4696e308 .Kernel.index
Hmmm, maybe there is some race condition that is not triggered always. If
I find time I let xfs_fsr run von ~/Mail or folder with several sub
folders so that more index files are touched. I can make a backup, let it
run and if Kontact / KMail complains look at the differences.
Regards,
--
Martin 'Helios' Steigerwald - http://www.Lichtvoll.de
GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7
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