diff options
Diffstat (limited to 'mount/mount.8')
| -rw-r--r-- | mount/mount.8 | 130 |
1 files changed, 120 insertions, 10 deletions
diff --git a/mount/mount.8 b/mount/mount.8 index f90341198..42a7a4a72 100644 --- a/mount/mount.8 +++ b/mount/mount.8 @@ -95,7 +95,7 @@ prints a version string; and just .RE lists all mounted file systems (of type .IR type ). -The option \-l adds the (ext2) labels in this listing. +The option \-l adds the (ext2 and XFS) labels in this listing. See below. .\" In fact since 2.3.99. At first the syntax was mount -t bind. @@ -280,12 +280,12 @@ command is trying to do. It can also be used to add entries for devices that were mounted earlier with the -n option. .TP .B \-l -Add the ext2 labels in the mount output. Mount must have permission to +Add the ext2 and XFS labels in the mount output. Mount must have permission to read the disk device (e.g. be suid root) for this to work. -One can set such a label -using the +One can set such a label for ext2 using the .BR e2label (8) -utility. +utility, or for XFS using +.BR xfs_admin (8). .TP .B \-n Mount without writing in @@ -323,13 +323,13 @@ These two options require the file The argument following the .B \-t is used to indicate the file system type. The file system types which are -currently supported are listed in -.IR linux/fs/filesystems.c : +currently supported are: .IR adfs , .IR affs , .IR autofs , .IR coda , .IR coherent , +.IR cramfs , .IR devpts , .IR efs , .IR ext , @@ -352,6 +352,7 @@ currently supported are listed in .IR umsdos , .IR vfat , .IR xenix , +.IR xfs , .IR xiafs . Note that coherent, sysv and xenix are equivalent and that .I xenix @@ -391,7 +392,8 @@ option is given, or if the .B auto type is specified, the superblock is probed for the filesystem type .RI ( minix ", " ext ", " ext2 ", " xiafs ", " iso9660 ", " romfs -.RI , ufs ", " ntfs ", " qnx4 ", " bfs +.RI , ufs ", " ntfs ", " qnx4 ", " bfs ", " xfs ", " cramfs ", " hfs +.RI , hpfs ", " adfs are supported). If this probe fails, mount will try to read the file .IR /etc/filesystems , @@ -494,7 +496,7 @@ This is the default. .B remount Attempt to remount an already-mounted file system. This is commonly used to change the mount flags for a file system, especially to make a -readonly file system writeable. +readonly file system writeable. It does not change device or mount point. .TP .B ro Mount the file system read-only. @@ -522,7 +524,16 @@ The following options apply only to certain file systems. We sort them by file system. They all follow the .B \-o flag. - +.SH "Mount options for adfs" +.TP +\fBuid=\fP\fIvalue\fP and \fBgid=\fP\fIvalue\fP +Set the owner and group of the files in the file system (default: uid=gid=0). +.TP +\fBownmask=\fP\fIvalue\fP and \fBothmask=\fP\fIvalue\fP +Set the permission mask for ADFS 'owner' permissions and 'other' permissions, +respectively (default: 0700 and 0077, respectively). +See also +.IR /usr/src/linux/Documentation/filesystems/adfs.txt . .SH "Mount options for affs" .TP \fBuid=\fP\fIvalue\fP and \fBgid=\fP\fIvalue\fP @@ -863,6 +874,7 @@ that it is read-only, of course). .B norock Disable the use of Rock Ridge extensions, even if available. Cf.\& .BR map . +.TP .B nojoliet Disable the use of Microsoft Joliet extensions, even if available. Cf.\& .BR map . @@ -1218,6 +1230,102 @@ If `uni_xlate' gets set, UTF8 gets disabled. .SH "Mount options for xenix" None. +.SH "Mount options for xfs" +.TP +.BI biosize= size +Sets the preferred buffered I/O size (default size is 64K). +.I size +must be expressed as the logarithm (base2) of the desired I/O size. +Valid values for this option are 14 through 16, inclusive +(i.e. 16K, 32K, and 64K bytes). +On machines with a 4K pagesize, 13 (8K bytes) is also a valid +.IR size . +The preferred buffered I/O size can also be altered on an individual +file basis using the +.BR ioctl (2) +system call. +.TP +.B dmapi " / " xdsm +Enable the DMAPI (Data Management API) event callouts. +.TP +.BI logbufs= value +Set the number of in-memory log buffers. +Valid numbers range from 2-8 inclusive. +The default value is 8 buffers for filesystems with a blocksize of 64K, +4 buffers for filesystems with a blocksize of 32K, +3 buffers for filesystems with a blocksize of 16K, +and 2 buffers for all other configurations. +Increasing the number of buffers may increase performance on +some workloads at the cost of the memory used for the +additional log buffers and their associated control structures. +.TP +.BI logbsize= value +Set the size of each in-memory log buffer. +Valid sizes are 16384 (16K) and 32768 (32K). +The default value for machines with more than 32MB of memory is 32768, +machines with less memory use 16384 by default. +.TP +\fBlogdev=\fP\fIdevice\fP and \fBrtdev=\fP\fIdevice\fP +Use an external log (metadata journal) and/or real-time device. +An XFS filesystem has up to three parts: a data section, a log section, +and a real-time section. +The real-time section is optional, and the log section can be separate +from the data section or contained within it. +Refer to +.BR xfs (5). +.TP +.B noalign +Data allocations will not be aligned at stripe unit boundaries. +.TP +.B noatime +Access timestamps are not updated when a file is read. +.TP +.B norecovery +The filesystem will be mounted without running log recovery. +If the filesystem was not cleanly unmounted, it is likely to +be inconsistent when mounted in +.B norecovery +mode. +Some files or directories may not be accessible because of this. +Filesystems mounted +.B norecovery +must be mounted read-only or the mount will fail. +.TP +.B osyncisdsync +Make writes to files opened with the O_SYNC flag set behave +as if the O_DSYNC flag had been used instead. +This can result in better performance without compromising +data safety. +However if this option is in effect, timestamp updates from +O_SYNC writes can be lost if the system crashes. +.TP +.BR quota " / " usrquota " / " uqnoenforce +User disk quota accounting enabled, and limits (optionally) enforced. +.TP +.BR grpquota " / " gqnoenforce +Group disk quota accounting enabled and limits (optionally) enforced. +.TP +\fBsunit=\fP\fIvalue\fP and \fBswidth=\fP\fIvalue\fP +Used to specify the stripe unit and width for a RAID device or a stripe +volume. +.I value +must be specified in 512-byte block units. +If this option is not specified and the filesystem was made on a stripe +volume or the stripe width or unit were specified for the RAID device at +mkfs time, then the mount system call will restore the value from the +superblock. +For filesystems that are made directly on RAID devices, these options can be +used to override the information in the superblock if the underlying disk +layout changes after the filesystem has been created. +The +.B swidth +option is required if the +.B sunit +option has been specified, +and must be a multiple of the +.B sunit +value. + .SH "Mount options for xiafs" None. Although nothing is wrong with xiafs, it is not used much, and is not maintained. Probably one shouldn't use it. @@ -1275,7 +1383,9 @@ temporary file .BR umount (8), .BR swapon (8), .BR nfs (5), +.BR xfs (5), .BR e2label (8), +.BR xfs_admin (8), .BR mountd (8), .BR nfsd (8), .BR mke2fs (8), |