mirror of https://gitee.com/openkylin/linux.git
docs: filesystems: convert ext2.txt to ReST
- Add a SPDX header; - Some whitespace fixes and new line breaks; - Mark literal blocks as such; - Add table markups; - Use footnoote markups; - Add it to filesystems/index.rst. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Acked-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/fde6721f0303259d830391e351dbde48f67f3ec7.1581955849.git.mchehab+huawei@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Mauro Carvalho Chehab
Jonathan Corbet
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@ -1,3 +1,5 @@
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.. SPDX-License-Identifier: GPL-2.0
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The Second Extended Filesystem
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==============================
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@ -14,8 +16,9 @@ Options
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Most defaults are determined by the filesystem superblock, and can be
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set using tune2fs(8). Kernel-determined defaults are indicated by (*).
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bsddf (*) Makes `df' act like BSD.
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minixdf Makes `df' act like Minix.
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==================== === ================================================
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bsddf (*) Makes ``df`` act like BSD.
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minixdf Makes ``df`` act like Minix.
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check=none, nocheck (*) Don't do extra checking of bitmaps on mount
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(check=normal and check=strict options removed)
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@ -62,6 +65,7 @@ quota, usrquota Enable user disk quota support
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grpquota Enable group disk quota support
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(requires CONFIG_QUOTA).
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==================== === ================================================
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noquota option ls silently ignored by ext2.
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@ -294,9 +298,9 @@ respective fsck programs.
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If you're exceptionally paranoid, there are 3 ways of making metadata
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writes synchronous on ext2:
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per-file if you have the program source: use the O_SYNC flag to open()
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per-file if you don't have the source: use "chattr +S" on the file
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per-filesystem: add the "sync" option to mount (or in /etc/fstab)
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- per-file if you have the program source: use the O_SYNC flag to open()
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- per-file if you don't have the source: use "chattr +S" on the file
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- per-filesystem: add the "sync" option to mount (or in /etc/fstab)
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the first and last are not ext2 specific but do force the metadata to
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be written synchronously. See also Journaling below.
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@ -316,10 +320,12 @@ Most of these limits could be overcome with slight changes in the on-disk
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format and using a compatibility flag to signal the format change (at
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the expense of some compatibility).
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Filesystem block size: 1kB 2kB 4kB 8kB
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File size limit: 16GB 256GB 2048GB 2048GB
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Filesystem size limit: 2047GB 8192GB 16384GB 32768GB
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===================== ======= ======= ======= ========
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Filesystem block size 1kB 2kB 4kB 8kB
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===================== ======= ======= ======= ========
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File size limit 16GB 256GB 2048GB 2048GB
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Filesystem size limit 2047GB 8192GB 16384GB 32768GB
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===================== ======= ======= ======= ========
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There is a 2.4 kernel limit of 2048GB for a single block device, so no
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filesystem larger than that can be created at this time. There is also
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@ -370,19 +376,24 @@ ext4 and journaling.
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References
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==========
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======================= ===============================================
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The kernel source file:/usr/src/linux/fs/ext2/
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e2fsprogs (e2fsck) http://e2fsprogs.sourceforge.net/
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Design & Implementation http://e2fsprogs.sourceforge.net/ext2intro.html
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Journaling (ext3) ftp://ftp.uk.linux.org/pub/linux/sct/fs/jfs/
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Filesystem Resizing http://ext2resize.sourceforge.net/
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Compression (*) http://e2compr.sourceforge.net/
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Compression [1]_ http://e2compr.sourceforge.net/
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======================= ===============================================
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Implementations for:
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Windows 95/98/NT/2000 http://www.chrysocome.net/explore2fs
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Windows 95 (*) http://www.yipton.net/content.html#FSDEXT2
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DOS client (*) ftp://metalab.unc.edu/pub/Linux/system/filesystems/ext2/
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OS/2 (+) ftp://metalab.unc.edu/pub/Linux/system/filesystems/ext2/
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RISC OS client http://www.esw-heim.tu-clausthal.de/~marco/smorbrod/IscaFS/
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(*) no longer actively developed/supported (as of Apr 2001)
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(+) no longer actively developed/supported (as of Mar 2009)
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======================= ===========================================================
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Windows 95/98/NT/2000 http://www.chrysocome.net/explore2fs
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Windows 95 [1]_ http://www.yipton.net/content.html#FSDEXT2
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DOS client [1]_ ftp://metalab.unc.edu/pub/Linux/system/filesystems/ext2/
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OS/2 [2]_ ftp://metalab.unc.edu/pub/Linux/system/filesystems/ext2/
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RISC OS client http://www.esw-heim.tu-clausthal.de/~marco/smorbrod/IscaFS/
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======================= ===========================================================
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.. [1] no longer actively developed/supported (as of Apr 2001)
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.. [2] no longer actively developed/supported (as of Mar 2009)
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@ -62,6 +62,7 @@ Documentation for filesystem implementations.
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ecryptfs
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efivarfs
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erofs
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ext2
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fuse
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overlayfs
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virtiofs
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