VXFS (veritas) 文件系统已满 - 但事实并非如此

VXFS (veritas) 文件系统已满 - 但事实并非如此

我有一台 Solaris 10 服务器,它报告文件系统已满:

# df -h /opt/CSCObac/var
Filesystem             size   used  avail capacity  Mounted on
/dev/vx/dsk/RDU-VAR-DG/RDU-VAR-VOL

# df -F vxfs /opt/CSCObac/var/
/opt/CSCObac/var   (/dev/vx/dsk/RDU-VAR-DG/RDU-VAR-VOL): 4469796 blocks   558723 files

# df -h | fgrep '/opt/'
/dev/vx/dsk/RDU-APP-DG/RDU-APP-VOL    68G   547M    63G     1%    /opt/CSCObac
/dev/vx/dsk/RDU-VAR-DG/RDU-VAR-VOL   134G   132G   2.0G    99%    /opt/CSCObac/var
/dev/vx/dsk/RDU-LOG-DG/RDU-LOG-VOL   134G   5.2G   121G     5%    /opt/CSCObac/var/rdu

除了文件系统上没有占用 100G+ 的文件外,df 报告它没有用尽可用块,并且也不缺少可用的 inode:

# du -sh /opt/CSCObac/var
 5.1G   /opt/CSCObac/var
                   134G   132G   2.0G    99%    /opt/CSCObac/var

# df -g /opt/CSCObac/var/
/opt/CSCObac/var   (/dev/vx/dsk/RDU-VAR-DG/RDU-VAR-VOL):     8192 block size          1024 frag size  
280938496 total blocks    4469536 free blocks  4190192 available             558720 total files
558691 free files     74450896 filesys id  
vxfs fstype       0x00000004 flag             255 filename length

此外,没有打开的文件描述符:

# lsof /opt/CSCObac/var/
#

这是一个 vxfs 文件系统,卷和大小配置见下文:

# fstyp -v /dev/vx/dsk/RDU-VAR-DG/RDU-VAR-VOL
vxfs
magic a501fcf5  version 7  ctime November 15, 2013  2:15:55 PM CET
logstart 0  logend 0
bsize  1024 size  140469248 dsize  0  ninode 140469248  nau 0
defiextsize 0  ilbsize 0  immedlen 96  ndaddr 10
aufirst 0  emap 0  imap 0  iextop 0  istart 0
bstart 0  femap 0  fimap 0  fiextop 0  fistart 0  fbstart 0
nindir 2048  aulen 32768  auimlen 0  auemlen 8
auilen 0  aupad 0  aublocks 32768  maxtier 15
inopb 4  inopau 0  ndiripau 0  iaddrlen 8 bshift 10
inoshift 2  bmask fffffc00  boffmask 3ff  checksum f790321b
oltext1 32  oltext2 1282  oltsize 1  checksum2 0
free 2234899  ifree 0
efree  5 9 7 2 3 5 4 4 2 0 3 1 2 3 2 0 1 2 1 1 1 0 0 0 0 0 0 0 0 0 0 0 

# vxlist disk | grep 'VAR'
disk disk_4     RDU-VAR-DG01   RDU-VAR-DG     133.96g   608.00k imported
disk disk_8     RDU-VAR-DG02   RDU-VAR-DG     133.96g   608.00k imported

# vxlist vol RDU-VAR-VOL
Volume:  RDU-VAR-VOL
GUID:               {0de33acc-1dd2-11b2-a8f9-00212800c1e0}
Disk Group:         name=RDU-VAR-DG id=1384520670.51.rdu2a
Host:               rdu2a
Size:               133.9g
Type:               fsgen
Status:             healthy
Layout:             concat-mirror
NMirrors:           2
Read Policy:        SELECT
Flags:              open writeback
Device Path:        /dev/vx/dsk/RDU-VAR-DG/RDU-VAR-VOL
Permissions:        user=root group=root mode=0600

filesystem
TY   FSTYPE     %USED VSET   MOUNT-POINT
fs   vxfs         98% -      /opt/CSCObac/var

stats
TY   OPERATION       COUNT      BLOCKS   TIME(MSEC)
stat read          1160490     1731963      17538.5
stat write         3928639   294438233       7579.4

plexes
TY   NAME             TYPE     STATUS
plex RDU-VAR-VOL-03   simple   attached

# vxlist fs | fgrep 'VAR'
fs   var       vxfs       133.96g   2046.10m     99% /dev/vx/dsk/RDU-VAR-DG/RDU-VAR-VOL   /opt/CSCObac/var

# vxassist -g RDU-VAR-DG -p maxgrow RDU-VAR-VOL
VxVM vxassist ERROR V-5-1-1178 Volume RDU-VAR-VOL cannot be extend within the given constraints

# fsadm -D /opt/CSCObac/var/ 

  Directory Fragmentation Report
             Dirs        Total      Immed    Immeds   Dirs to   Blocks to
             Searched    Blocks     Dirs     to Add   Reduce    Reduce
  total            11         3         8         0         0           0

除了 inode、块和文件描述符之外,还有什么可以填满我的文件系统?

答案1

经过与支持供应商的长时间故障排除,我们找到了解决方案。在安装 vxfs 文件系统之前,有一个进程正在运行。此进程正在将数据写入 /opt/CSCObac/var/rdu,这是 /opt/CSCObac/var/ 挂载点的嵌套目录。终止此进程后,磁盘使用率恢复到预期的 1%。由于 rdu 挂载点遮挡了此目录的内容,因此操作系统无法报告此目录的内容。在安装文件系统之前,长时间运行的进程开始写入此目录挂载点中的文件,这解释了为什么它的大小在增加,而目录中的可见文件却没有增加。

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