Ext3
增加 EXT3 文件系統時是否有大小限制?
我有一個卷組,其大小約為 30 TByte。它上面有一個 EXT3 文件系統:
SERVER:/home/usfman # dumpe2fs -h /dev/mapper/datavg-foolv dumpe2fs 1.41.9 (22-Aug-2009) Filesystem volume name: <none> Last mounted on: <not available> Filesystem UUID: censored Filesystem magic number: 0xEF53 Filesystem revision #: 1 (dynamic) Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery sparse_super large_file Filesystem flags: signed_directory_hash Default mount options: (none) Filesystem state: clean Errors behavior: Continue Filesystem OS type: Linux Inode count: 289669120 Block count: 1158676480 Reserved block count: 57920704 Free blocks: 216859296 Free inodes: 289592213 First block: 0 Block size: 4096 Fragment size: 4096 Reserved GDT blocks: 747 Blocks per group: 32768 Fragments per group: 32768 Inodes per group: 8192 Inode blocks per group: 512 Filesystem created: censored Last mount time: censored Last write time: censored Mount count: 5 Maximum mount count: 33 Last checked: censored Check interval: 15552000 (6 months) Next check after: censored Reserved blocks uid: 0 (user root) Reserved blocks gid: 0 (group root) First inode: 11 Inode size: 256 Required extra isize: 28 Desired extra isize: 28 Journal inode: 8 Default directory hash: half_md4 Directory Hash Seed: censored Journal backup: inode blocks Journal size: 128M SERVER:/home/usfman #
問題:我們能否將此 FS 從 4.3TB 增加到 ~13 TByte?
或者最大尺寸會有一些限制?EXT3 Wiki 頁面建議最大大小可以是 4 到 32 TByte。有人可以澄清嗎?
https://en.wikipedia.org/wiki/Ext3
更新:–>> 塊大小:4096 所以 16 TByte 是 4K 塊的最大 FS 大小。我只需要有人確認這個 wiki 連結。
SLES 11、64 位核心
這為您提供了最大文件大小的概述https://access.redhat.com/solutions/1532。您可能需要考慮將 ext3 升級到 ext4 https://docs.fedoraproject.org/en-US/Fedora/14/html/Storage_Administration_Guide/ext4converting.html。因此,如果您的核心不是太舊,13 TB 應該沒問題,例如您正在執行 SLES 11、SP4。