Hi all.
I have currently a server:
cat /etc/redhat-release
CentOS release 5.7 (Final)
uname -a
Linux host.domain.com 2.6.18-274.18.1.el5 #1 SMP Thu Feb 9 12:45:44
EST 2012 x86_64 x86_64 x86_64 GNU/Linux
I have there a filesystem mounted:
/dev/vg0/paczki /home/paczki-workdir ext4
defaults,noatime 0 0
on which df gives strange output:
LANG=C df -h /home/paczki-workdir;sleep 3;df -h /home/paczki-workdir
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg0-paczki
1008G 268G 690G 28% /home/paczki-workdir
System plików rozm. użyte dost. %uż. zamont. na
/dev/mapper/vg0-paczki
1008G 155G 803G 17% /home/paczki-workdir
du -sk /home/paczki-workdir;sleep 3;du -sk /home/paczki-workdir
48426364 /home/paczki-workdir
48428980 /home/paczki-workdir
du -sh /home/paczki-workdir;sleep 3;du -sh /home/paczki-workdir
47G /home/paczki-workdir
47G /home/paczki-workdir
Currently there is only one process writing to the filesystem:
root 27945 27918 3 09:16 ? 00:01:44 tar
--exclude=*/Maildir/.Spam/cur/* --exclude=*/Maildir/.Spam/new/*
--use-compress-program /usr/bin/pigz -cf
/home/paczki-workdir/abaksa-mail-20120628-0413.tgz
and it writes so much data:
du -sh /home/paczki-workdir/abaksa-mail-20120628-0413.tgz;sleep 3;du
-sh /home/paczki-workdir/abaksa-mail-20120628-0413.tgz
13G /home/paczki-workdir/abaksa-mail-20120628-0413.tgz
13G /home/paczki-workdir/abaksa-mail-20120628-0413.tgz
du -sk /home/paczki-workdir/abaksa-mail-20120628-0413.tgz;sleep 3;du
-sk /home/paczki-workdir/abaksa-mail-20120628-0413.tgz
13410988 /home/paczki-workdir/abaksa-mail-20120628-0413.tgz
13425040 /home/paczki-workdir/abaksa-mail-20120628-0413.tgz
I've also noticed that when nothing writes to this filesystem than df
output also varies over short time periods.
When I've updated the kernel and restarted the host for few hours df
was showing ok info. There is no info about problems in
/var/log/messages and dmesg.
Additional info:
vgdisplay -v vg0
Using volume group(s) on command line
Finding volume group "vg0"
--- Volume group ---
VG Name vg0
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 7
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 2
Max PV 0
Cur PV 1
Act PV 1
VG Size 3,64 TB
PE Size 4,00 MB
Total PE 953863
Alloc PE / Size 786432 / 3,00 TB
Free PE / Size 167431 / 654,03 GB
VG UUID wRjDqu-TUlW-7YH2-j6xl-nuc1-EczW-D2CAOK
--- Logical volume ---
LV Name /dev/vg0/paczki
VG Name vg0
LV UUID 0EyRjA-p90A-bfX6-1zEA-eMba-5Hn5-jc9slo
LV Write Access read/write
LV Status available
# open 1
LV Size 1,00 TB
Current LE 262144
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 512
Block device 253:0
--- Logical volume ---
LV Name /dev/vg0/msklon5
VG Name vg0
LV UUID 8nlU4T-Qozl-bPnr-JOmh-g9Pi-cabs-J7yI7V
LV Write Access read/write
LV Status available
# open 1
LV Size 2,00 TB
Current LE 524288
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 512
Block device 253:1
--- Physical volumes ---
PV Name /dev/md0
PV UUID hly53e-wbbR-5xLo-3P4k-U4xt-8XeR-W0YCul
PV Status allocatable
Total PE / Free PE 953863 / 167431
mdadm --detail /dev/md0
/dev/md0:
Version : 0.90
Creation Time : Wed Apr 11 10:37:04 2012
Raid Level : raid10
Array Size : 3907023872 (3726.03 GiB 4000.79 GB)
Used Dev Size : 1953511936 (1863.01 GiB 2000.40 GB)
Raid Devices : 4
Total Devices : 4
Preferred Minor : 0
Persistence : Superblock is persistent
Update Time : Thu Jun 28 10:17:04 2012
State : active
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0
Layout : near=2
Chunk Size : 64K
UUID : 423fd5cf:beedc018:915808f0:8ec673de
Events : 0.845339
Number Major Minor RaidDevice State
0 8 17 0 active sync /dev/sdb1
1 8 33 1 active sync /dev/sdc1
2 8 49 2 active sync /dev/sdd1
3 8 65 3 active sync /dev/sde1
Any clues why du shows wrong and floating info?
Best regards,
Rafal Radecki.