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Message-Id: <1389359200-16539-1-git-send-email-cmaiolino@redhat.com> Date: Fri, 10 Jan 2014 11:06:40 -0200 From: Carlos Maiolino <cmaiolino@...hat.com> To: util-linux@...r.kernel.org, linux-ext4@...r.kernel.org Subject: [PATCH] Update ext3/4 mount options [V2] Add missing mount options to ext3 and ext4 filesystems. This also remove resize option information from the man page. Changelog: V2 - applied phrasing corrections Signed-off-by: Carlos Maiolino <cmaiolino@...hat.com> --- sys-utils/mount.8 | 42 +++++++++++++++++++++++++++++++----------- 1 file changed, 31 insertions(+), 11 deletions(-) diff --git a/sys-utils/mount.8 b/sys-utils/mount.8 index 6a5edd0..7f05f52 100644 --- a/sys-utils/mount.8 +++ b/sys-utils/mount.8 @@ -1466,12 +1466,12 @@ journal file; ext3 will create a new journal, overwriting the old contents of the file whose inode number is .IR inum . .TP -.BR journal_dev=devnum +.BR journal_dev=devnum / journal_path=path When the external journal device's major/minor numbers -have changed, this option allows the user to specify +have changed, these options allow the user to specify the new journal location. The journal device is -identified through its new major/minor numbers encoded -in devnum. +identified either through its new major/minor numbers encoded +in devnum, or via a path to the device. .TP .BR norecovery / noload Don't load the journal on mounting. Note that @@ -1504,6 +1504,13 @@ internal filesystem integrity, however it can allow old data to appear in files after a crash and journal recovery. .RE .TP +.BR data_err=ignore +Just print an error message if an error occurs in a file data buffer in +ordered mode. +.TP +.BR data_err=abort +Abort the journal if an error occurs in a file data buffer in ordered mode. +.TP .BR barrier=0 " / " barrier=1 " This enables/disables barriers. barrier=0 disables it, barrier=1 enables it. Write barriers enforce proper on-disk ordering of journal commits, making @@ -1541,7 +1548,7 @@ incorporates scalability and reliability enhancements for supporting large filesystem. The options -.B journal_dev, noload, data, commit, orlov, oldalloc, [no]user_xattr +.B journal_dev, norecovery, noload, data, commit, orlov, oldalloc, [no]user_xattr .B [no]acl, bsddf, minixdf, debug, errors, data_err, grpid, bsdgroups, nogrpid .B sysvgroups, resgid, resuid, sb, quota, noquota, grpquota, usrquota .B usrjquota, grpjquota and jqfmt @@ -1637,6 +1644,17 @@ operation is committed. This provides roughly the same level of guarantees as ext3, and avoids the "zero-length" problem that can happen when a system crashes before the delayed allocation blocks are forced to disk. .TP +.BR noinit_itable +Do not initialize any uninitialized inode table blocks in the background. This +feature may be used by installation CD's so that the install process can +complete as quickly as possible; the inode table initialization process would +then be deferred until the next time the filesystem is mounted. +.TP +.BR init_itable=n +The lazy itable init code will wait n times the number of milliseconds it took +to zero out the previous block group's inode table. This minimizes the impact on +system performance while the filesystem's inode table is being initialized. +.TP .BR discard / nodiscard Controls whether ext4 should issue discard/TRIM commands to the underlying block device when blocks are freed. This is useful for SSD devices and @@ -1648,12 +1666,6 @@ Disables 32-bit UIDs and GIDs. This is for interoperability with older kernels which only store and expect 16-bit values. .TP -.BR resize -Allows to resize filesystem to the end of the last -existing block group, further resize has to be done -with resize2fs either online, or offline. It can be -used only with conjunction with remount. -.TP .BR block_validity / noblock_validity This options allows to enables/disables the in-kernel facility for tracking filesystem metadata blocks within internal data structures. This allows multi- @@ -1672,6 +1684,14 @@ Note that dioread_nolock code path is only used for extent-based files. Because of the restrictions this options comprises it is off by default (e.g. dioread_lock). .TP +.BR max_dir_size_kb=n +This limits the size of the directories so that any attempt to expand them +beyond the specified limit in kilobytes will cause an ENOSPC error. This is +useful in memory-constrained environments, where a very large directory can +cause severe performance problems or even provoke the Out Of Memory killer. (For +example, if there is only 512mb memory available, a 176mb directory may +seriously cramp the system's style.) +.TP .BR i_version Enable 64-bit inode version support. This option is off by default. -- 1.8.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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