As other people have noted, five percent are reserved on an ext2/3/4 filesystem by default. It is a good idea to leave at least 5% of reserved blocks on the FS to prevent fragmentation. 10% would be more efficient for this purpose but if you know what you are doing, you can reduce this reserved blocks count. (use tune2fs -m)
Regards, Morgan ________________________________ From: [email protected] [mailto:[email protected]] On Behalf Of Nick Lunt Sent: Thursday, November 04, 2010 1:41 PM To: Red Hat Enterprise Linux 5 (Tikanga) discussion mailing-list Subject: Re: [rhelv5-list] df is inaccurate Possible I suppose, but this happens on every rhel server I've ever worked on ! From: [email protected] [mailto:[email protected]] On Behalf Of Langley, Morgan (GE Capital) Sent: 04 November 2010 12:24 To: Red Hat Enterprise Linux 5 (Tikanga) discussion mailing-list Subject: Re: [rhelv5-list] df is inaccurate Hmm, maybe you have some reserved blocks which are not showing up in df? I have not checked this though... ________________________________ From: [email protected] [mailto:[email protected]] On Behalf Of Nick Lunt Sent: Thursday, November 04, 2010 12:57 PM To: Red Hat Enterprise Linux 5 (Tikanga) discussion mailing-list Subject: [rhelv5-list] df is inaccurate Hi folks every now and then I seem to get a flurry of users asking me "why is 'df' inaccurate?". I've never really understood why though, so anyone know ? Eg: $ df -klP / Filesystem 1024-blocks Used Available Capacity Mounted on /dev/mapper/VG00-LVol00 4031680 2204200 1622680 58% / $ bc bc 1.06 Copyright 1991-1994, 1997, 1998, 2000 Free Software Foundation, Inc. This is free software with ABSOLUTELY NO WARRANTY. For details type `warranty'. 4031680 - 2204200 1827480 So either df is wrong, I'm blind, or bc can't do take aways ;) Anyone know why df is wildly inaccurate ? Cheers Nick . __________ Information from ESET NOD32 Antivirus, version of virus signature database 5590 (20101104) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com
_______________________________________________ rhelv5-list mailing list [email protected] https://www.redhat.com/mailman/listinfo/rhelv5-list
