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<p class="MsoNormal"><span lang="EN-US">Hi, everyone</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">The test environment is Ubuntu 1204, with ocfs2-tools 1.6.4, Linux kernel version is 3.2.40.</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">I format the disk of sdc as the OCFS2, and sdc disk is one LUN on iSCSI storage.</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">root@Server13:~# fdisk -l /dev/sdc</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">Disk /dev/sdc: <span style="color:red">222.0 GB, 222049599488 bytes</span></span></p>
<p class="MsoNormal"><span lang="EN-US">255 heads, 63 sectors/track, 26995 cylinders, total 433690624 sectors</span></p>
<p class="MsoNormal"><span lang="EN-US">Units = sectors of 1 * 512 = 512 bytes</span></p>
<p class="MsoNormal"><span lang="EN-US">Sector size (logical/physical): 512 bytes / 512 bytes</span></p>
<p class="MsoNormal"><span lang="EN-US">I/O size (minimum/optimal): 512 bytes / 512 bytes</span></p>
<p class="MsoNormal"><span lang="EN-US">Disk identifier: 0x2887d2e0</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US"> Device Boot Start End Blocks Id System</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">I formatted one disk with the command line as below, 32 node and block is 4K, cluster_size is 1M, used as Virtual machine storage:
</span></p>
<p class="MsoNormal"><span lang="EN-US">mkfs.ocfs2 -b 4k -C 1M -L targetwu-lun1 -T vmstore -N
<span style="color:red">32</span> /dev/sdc</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">The disk capacity is about 200G after formatting.</span></p>
<p class="MsoNormal"><span lang="EN-US">As the capacity is used, there is remained about 17.8G on the disk sdc.</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">It is no space when I copy one file about 5G to the mount point /vms/he:
</span></p>
<p class="MsoNormal"><span lang="EN-US">root@Server13:~# cp /vms/Share/X16w2k3-1-11 /vms/he/;echo $?</span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="color:red">cp: writing `/vms/he/X16w2k3-1-11': No space left on device</span></b></p>
<p class="MsoNormal"><b><span lang="EN-US" style="color:red">cp: failed to extend `/vms/he/X16w2k3-1-11': No space left on device</span></b></p>
<p class="MsoNormal"><span lang="EN-US">1</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">It is OK to create file with 1K size.</span></p>
<p class="MsoNormal"><span lang="EN-US">root@Server13:/vms/he# <b><span style="color:red">dd if=/dev/zero of=filename.a bs=1K count=2;echo $?</span></b></span></p>
<p class="MsoNormal"><span lang="EN-US">2+0 records in</span></p>
<p class="MsoNormal"><span lang="EN-US">2+0 records out</span></p>
<p class="MsoNormal"><span lang="EN-US">2048 bytes (2.0 kB) copied, 2.237e-05 s, 91.6 MB/s</span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="color:red">0</span></b></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">The remained inode number is as below: </span>
</p>
<p class="MsoNormal"><span lang="EN-US">root@Server13:~# df -i /vms/he</span></p>
<p class="MsoNormal"><span lang="EN-US">Filesystem Inodes IUsed IFree IUse% Mounted on</span></p>
<p class="MsoNormal"><span lang="EN-US">/dev/sdc 211763 193537 <b><span style="color:red">18226
</span></b> 92% /vms/he</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">The cluster size informations: </span></p>
<p class="MsoNormal"><span lang="EN-US">root@Server13:/var/spool# debugfs.ocfs2 -n -R "stats" /dev/sdc | grep -i "Cluster Size"</span></p>
<p class="MsoNormal"><span lang="EN-US"> Block Size Bits: 12 Cluster Size Bits: 20</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">The disk stats is: </span></p>
<p class="MsoNormal"><span lang="EN-US">debugfs: stats</span></p>
<p class="MsoNormal"><span lang="EN-US"> Revision: 0.90</span></p>
<p class="MsoNormal"><span lang="EN-US"> Mount Count: 0 Max Mount Count: 20</span></p>
<p class="MsoNormal"><span lang="EN-US"> State: 0 Errors: 0</span></p>
<p class="MsoNormal"><span lang="EN-US"> Check Interval: 0 Last Check: Mon Mar 18 14:04:56 2013</span></p>
<p class="MsoNormal"><span lang="EN-US"> Creator OS: 0</span></p>
<p class="MsoNormal"><span lang="EN-US"> Feature Compat: 3 backup-super strict-journal-super</span></p>
<p class="MsoNormal"><span lang="EN-US"> Feature Incompat: 4688 sparse inline-data xattr refcount</span></p>
<p class="MsoNormal"><span lang="EN-US"> Tunefs Incomplete: 0 </span></p>
<p class="MsoNormal"><span lang="EN-US"> Feature RO compat: 1 unwritten</span></p>
<p class="MsoNormal"><span lang="EN-US"> Root Blknum: 513 System Dir Blknum: 514</span></p>
<p class="MsoNormal"><span lang="EN-US"> First Cluster Group Blknum: 256</span></p>
<p class="MsoNormal"><span lang="EN-US"> Block Size Bits: 12 Cluster Size Bits: 20</span></p>
<p class="MsoNormal"><span lang="EN-US"> Max Node Slots: 32</span></p>
<p class="MsoNormal"><span lang="EN-US"> Extended Attributes Inline Size: 256</span></p>
<p class="MsoNormal"><span lang="EN-US"> Label: targetwu-lun1</span></p>
<p class="MsoNormal"><span lang="EN-US"> UUID: 158526F2CC804CB8B9A8734B11D62B08</span></p>
<p class="MsoNormal"><span lang="EN-US"> Hash: 2796710281 (0xa6b26989)</span></p>
<p class="MsoNormal"><span lang="EN-US"> DX Seed[0]: 0x00000000</span></p>
<p class="MsoNormal"><span lang="EN-US"> DX Seed[1]: 0x00000000</span></p>
<p class="MsoNormal"><span lang="EN-US"> DX Seed[2]: 0x00000000</span></p>
<p class="MsoNormal"><span lang="EN-US"> Cluster stack: classic o2cb</span></p>
<p class="MsoNormal"><span lang="EN-US"> Inode: 2 Mode: 00 Generation: 2995084755 (0xb2855dd3)</span></p>
<p class="MsoNormal"><span lang="EN-US"> FS Generation: 2995084755 (0xb2855dd3)</span></p>
<p class="MsoNormal"><span lang="EN-US"> CRC32: 00000000 ECC: 0000</span></p>
<p class="MsoNormal"><span lang="EN-US"> Type: Unknown Attr: 0x0 Flags: Valid System Superblock
</span></p>
<p class="MsoNormal"><span lang="EN-US"> Dynamic Features: (0x0) </span></p>
<p class="MsoNormal"><span lang="EN-US"> User: 0 (root) Group: 0 (root) Size: 0</span></p>
<p class="MsoNormal"><span lang="EN-US"> Links: 0 Clusters: 211763</span></p>
<p class="MsoNormal"><span lang="EN-US"> ctime: 0x50f74cb4 -- Thu Jan 17 08:58:28 2013</span></p>
<p class="MsoNormal"><span lang="EN-US"> atime: 0x0 -- Thu Jan 1 08:00:00 1970</span></p>
<p class="MsoNormal"><span lang="EN-US"> mtime: 0x50f74cb4 -- Thu Jan 17 08:58:28 2013</span></p>
<p class="MsoNormal"><span lang="EN-US"> dtime: 0x0 -- Thu Jan 1 08:00:00 1970</span></p>
<p class="MsoNormal"><span lang="EN-US"> ctime_nsec: 0x00000000 -- 0</span></p>
<p class="MsoNormal"><span lang="EN-US"> atime_nsec: 0x00000000 -- 0</span></p>
<p class="MsoNormal"><span lang="EN-US"> mtime_nsec: 0x00000000 -- 0</span></p>
<p class="MsoNormal"><span lang="EN-US"> Refcount Block: 0</span></p>
<p class="MsoNormal"><span lang="EN-US"> Last Extblk: 0 Orphan Slot: 0</span></p>
<p class="MsoNormal"><span lang="EN-US"> Sub Alloc Slot: Global Sub Alloc Bit: 65535</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">root@Server13:/vms/he# dd if=/dev/zero of=filename.iso2 bs=1k count=500;echo $?</span></p>
<p class="MsoNormal"><span lang="EN-US">dd: writing `filename.iso2': No space left on device</span></p>
<p class="MsoNormal"><span lang="EN-US">4+0 records in</span></p>
<p class="MsoNormal"><span lang="EN-US">3+0 records out</span></p>
<p class="MsoNormal"><span lang="EN-US">3072 bytes (3.1 kB) copied, 0.00250058 s, 1.2 MB/s</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">The information about /vms/he is as below:
</span></p>
<p class="MsoNormal"><span lang="EN-US">root@Server13:/vms/he# ls -al </span></p>
<p class="MsoNormal"><span lang="EN-US">total <span style="color:black">193093636</span></span></p>
<p class="MsoNormal"><span lang="EN-US">drwxr-xr-x 4 root root 3896 Apr 13 10:34 .</span></p>
<p class="MsoNormal"><span lang="EN-US">drwxr-xr-x 15 root root 4096 Apr 12 16:44 ..</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 4 Apr 12 15:09 aa</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 4 Apr 12 16:44 aaa.txt</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw------- 1 root root 3651141632 Apr 3 16:24 CAS-174</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw------- 1 root root 2030043136 Apr 5 13:19 CAS-178</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 940818432 Mar 18 11:32 CAS-R0105.iso</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 3070230528 Apr 12 14:51 F3w2k3-1-11</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 6520045568 Apr 13 10:01 Fedora1_EN</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 5651824640 Apr 13 10:46 Fedora2_EN</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 6450839552 Apr 12 13:45 Fedora3_EN</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 5645533184 Apr 10 18:02 Fedora_EN</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 3072 Apr 13 10:29 filename.a</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 1024 Apr 13 10:25 filename.iso2</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 0 Apr 13 10:25 filename.iso2d</span></p>
<p class="MsoNormal"><span lang="EN-US">drwxr-xr-x 2 root root 3896 Apr 13 10:23 gzh_test</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 419430400 Apr 12 14:25 h2w2k3-1-11</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 18874880 Apr 12 14:25 h5</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 18874880 Apr 9 16:08 h61h5</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 18874880 Apr 9 13:48 h62h5</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 18874880 Apr 11 14:26 h63h5</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 18874880 Apr 9 13:48 h64h5</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 18874880 Apr 9 13:48 h65h5</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 18874880 Apr 9 13:48 h66h5</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 18874880 Apr 11 18:09 h67h5</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 18874880 Apr 9 13:48 h68h5</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 18874880 Apr 11 15:43 hh10h5</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 18874880 Apr 11 15:43 hh1h5</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 18874880 Apr 11 16:36 hh2h5</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 18874880 Apr 9 13:50 hh3h5</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 18874880 Apr 9 13:50 hh4h5</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 18874880 Apr 11 16:21 hh5h5</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 18874880 Apr 11 16:19 hh6h5</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 18874880 Apr 9 13:50 hh7h5</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 18874880 Apr 9 13:50 hh8h5</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 18874880 Apr 9 13:50 hh9h5</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 18998099968 Apr 13 2013 XXa</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw------- 1 root root 3011510272 Apr 12 14:27 Linux-clone</span></p>
<p class="MsoNormal"><span lang="EN-US">drwxr-xr-x 2 root root 3896 Mar 18 14:04 lost+found</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw------- 1 root root 9080668160 Apr 13 2013 XX</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw------- 1 root root 5391777792 Apr 13 2013 XX-clone</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw------- 1 root root 5385486336 Apr 12 14:38 XX-clone10</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw------- 1 root root 5387583488 Apr 12 13:57 XX-clone11</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw------- 1 root root 5385486336 Apr 12 14:38 XX-clone12</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw------- 1 root root 5391777792 Apr 13 10:46 XX-clone13</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw------- 1 root root 5385486336 Apr 12 13:19 XX-clone14</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw------- 1 root root 5387583488 Apr 12 13:53 XX-clone15</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw------- 1 root root 5389680640 Apr 12 14:38 XX-clone16</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw------- 1 root root 5395972096 Apr 13 10:46 XX-clone17</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw------- 1 root root 5389680640 Apr 12 14:38 XX-clone18</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw------- 1 root root 5391777792 Apr 12 14:38 XX-clone19</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw------- 1 root root 5387583488 Apr 12 13:17 XX-clone2</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw------- 1 root root 5391777792 Apr 12 13:38 XX-clone3</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw------- 1 root root 5385486336 Apr 12 14:03 XX-clone4</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw------- 1 root root 5387583488 Apr 12 14:40 XX-clone5</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw------- 1 root root 5385486336 Apr 12 13:19 XX-clone6</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw------- 1 root root 5387583488 Apr 12 14:40 XX-clone7</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw------- 1 root root 5387583488 Apr 12 14:38 XX-clone8</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw------- 1 root root 5393874944 Apr 12 14:38 XX-clone9</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw------- 1 root root 5389680640 Apr 13 2013 XX-clone0</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 10486272 Mar 20 11:05 test4</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 1621098496 Apr 12 14:38 tf11w2k3-1-11</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 1621098496 Apr 12 14:53 tf12w2k3-1-11</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 1621098496 Apr 12 14:38 tf13w2k3-1-11</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 1621098496 Apr 12 14:54 tf14w2k3-1-11</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 1627390464 Apr 12 15:41 tf15w2k3-1-11</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 1621098496 Apr 12 14:38 tf16w2k3-1-11</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 1621098496 Apr 12 14:54 tf20w2k3-1-11</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 1621098496 Apr 12 14:54 tf3w2k3-1-11</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw------- 1 root root 6291968 Apr 12 14:25 tt</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw------- 1 root root 2480930816 Mar 14 18:37 ubuntu-1210</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 6291968 Mar 25 14:48 uuuqui</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 3917479936 Apr 1 15:11 XX_lldptool_muban_6-clone</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 3818913792 Mar 14 15:55 XX_muban</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 458227712 Apr 12 16:54 X13w2k3-1-11</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 0 Apr 13 09:24 X16w2k3-1-11</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 281018368 Apr 12 15:05 X1w2k3-1-11</span></p>
<p class="MsoNormal"><span lang="EN-US">-rw-r--r-- 1 root root 210763776 Apr 13 10:37 zero</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">Why is it no capacity to cp or create large size file, but the disk capacity remains about 17.8G with df check?</span></p>
<p class="MsoNormal"><span lang="EN-US">Is it OK, or something wrong with it?</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">Thanks a lot.</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">Guozhonghua</span></p>
<p class="MsoNormal"><span lang="EN-US">2013-4-16</span></p>
</div>
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