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Correct usage of inode64/running out of inodes

To: xfs@xxxxxxxxxxx
Subject: Correct usage of inode64/running out of inodes
From: Adam Donald <Adam.Donald@xxxxxxxxxxxxxxx>
Date: Mon, 29 Jun 2009 07:59:33 -0500

Hello

In short, I believe that I have used the indode64 option correctly in mounting my XFS device on my Centos 5.2 system, however, I seem to only have 59 free inodes available and 7.5TB of free space.  I would appreciate any insight as to what the best approach would be to fix this situation.  In case it is helpful, I have included output from various commands/files below, the XFS device in question is /dev/mapper/VolGroup01-DATA01.  Thank you in advance for your assistance!

uname:
Linux NAS01 2.6.18-92.1.6.el5 #1 SMP Wed Jun 25 13:45:47 EDT 2008 x86_64 x86_64 x86_64 GNU/Linux

df -h:
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00        71G   12G   55G  18% /
/dev/sda1              99M   25M   70M  26% /boot
tmpfs                         3.9G     0  3.9G   0% /dev/shm
/dev/mapper/VolGroup01-DATA01        18T  9.9T  7.5T  57% /DATA01

df -ih:
Filesystem            Inodes   IUsed   IFree IUse% Mounted on
/dev/mapper/VolGroup00-LogVol00        19M    123K     19M    1% /
/dev/sda1                26K      44     26K    1% /boot
tmpfs                           999K       1    999K    1% /dev/shm
/dev/mapper/VolGroup01-DATA01        18G    297K     18G    1% /DATA01

mount:
...
/dev/mapper/VolGroup01-DATA01 on /DATA01 type xfs (rw,inode64)
...

fstab:
...
/dev/VolGroup01/DATA01  /DATA01                 xfs     rw,suid,dev,exec,auto,nouser,async,inode64      1 0
...

/usr/sbin/xfs_db -r -c sb -c p /dev/mapper/VolGroup01-DATA01:
magicnum = 0x58465342
blocksize = 4096
dblocks = 4638613504
rblocks = 0
rextents = 0
uuid = 2dc65efd-97e9-429f-a9bd-530bd86eac23
logstart = 4294967300
rootino = 128
rbmino = 129
rsumino = 130
rextsize = 1
agblocks = 144956672
agcount = 32
rbmblocks = 0
logblocks = 32768
versionnum = 0x3094
sectsize = 512
inodesize = 256
inopblock = 16
fname = "\000\000\000\000\000\000\000\000\000\000\000\000"
blocklog = 12
sectlog = 9
inodelog = 8
inopblog = 4
agblklog = 28
rextslog = 0
inprogress = 0
imax_pct = 25
icount = 303360
ifree = 59
fdblocks = 2001250945
frextents = 0
uquotino = 0
gquotino = 0
qflags = 0
flags = 0
shared_vn = 0
inoalignmt = 2
unit = 0
width = 0
dirblklog = 0
logsectlog = 0
logsectsize = 0
logsunit = 0
features2 = 0
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