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.