MOUNT(8) MOUNT(8) (NAME) mount - (SYNOPSIS) mount [-h|-V] mount [-l] [-t fstype] mount -a [-fFnrsvw] [-t fstype] [-O optlist] mount [-fnrsvw] [-o options] device|mountpoint mount [-fnrsvw] [-t fstype] [-o options] device mountpoint mount --bind|--rbind|--move olddir newdir mount --make-[shared|slave|private|unbindable|rshared|rslave|rprivate|runbindable] mountpoint (DESCRIPTION) mount . / . . mount . umount(8) . . mount : mount -t type device dir device ( type ) dir . -t type . mount . (root) . << >> . ( ) dir dir device . : mount /dir mount ( ) /etc/fstab . --target --source . : mount --target /mountpoint ( ) . mount . . --all ( --all ). (Listing the mounts) . findmnt(8) . '?' . ( type) : mount [-l] [-t type] -l . . (Indicating the device and filesystem) ( ) /dev/sda1 . NFS device knuth.cwi.nl:/dir . . UUID LABEL . (): LABEL=label . -L . UUID=uuid (UUID). UUID . -U . mount UUID . UUID fstab(5) . UUID . PARTLABEL=label . mkfs mkswap . GUID (GPT) . PARTUUID=uuid . mkfs mkswap . GUID (GPT) . ID=id udevd. WWN ( ) . ls /dev/disk/by-id udevd . udev udev . lsblk --fs UUID . blkid -p . UUID . lsblk -o +UUID,PARTUUID UUID . ( UUID=uuid) udev /dev/disk/by-{label,uuid,id,partuuid,partlabel} /etc/fstab . . mount(8) udev /etc/fstab . libblkid(3) . proc - proc - . ( none : <> mount .) /etc/fstab /etc/mtab /proc/mounts (The files /etc/fstab, /etc/mtab and /proc/mounts) /etc/fstab ( fstab(5) ) . fstab(5) --fstab path ( ). mount -a [-t type] [-O optlist] ( ) fstab ( / ) noauto . -F mount . fstab mtab . mount umount(8) /etc/mtab . /etc/mtab /etc/mtab /proc/mounts . mtab (namespaces) . mtab . mount . /etc/fstab -o : mount device|dir -o options /etc/fstab . --options-mode . . device ( LABEL UUID ID PARTUUID PARTLABEL) dir mount /etc/fstab . foo /dir: mount /dev/foo /dir --options-source-force fstab . mount fstab . (Non-superuser mounts) (superuser) . fstab user . /dev/cdrom /cd iso9660 ro,user,noauto,unhide iso9660 CDROM : mount /cd mount fstab . mount . NFS CIFS . util-linux 2.35 libmount mount . suid . ( fuse ). fstab(5) . . user fstab users . owner user . /dev/fd . group . user . user=someone (/sbin/mount.) . mount(2) ( ) . (TOCTOU) . . ( 5.2) (file descriptor) . user . mount(8) /dev/ ( ) /dev/ . /dev/ ( ) fstab . udev udev fstab . (Bind mount operation) . : mount --bind olddir newdir fstab: /olddir /newdir none bind . <> VFS . <> . <> . olddir newdir olddir (unmount) . ( ) . bind mount : mount --bind foo foo bind mount ( ) . : mount --rbind olddir newdir . ( _netdev) mount mount . util-linux 2.27 mount --bind . : mount -o bind,ro foo foo mount(2) . () . () bind (remount) : mount --bind olddir newdir mount -o remount,bind,ro olddir newdir bind ( VFS) (superblock) olddir newdir . VFS nosuid nodev noexec noatime nodiratime relatime nosymfollow "remount,bind" . ( ) . mount(2) ( -o rbind,ro). mount_setattr(2) libmount util-linux v2.39 "recursive" ( -o rbind,ro=recursive). . util-linux 2.31 mount bind /etc/fstab remount ( -o remount ). . bind bind . mount "remount,bind" /etc/fstab . util-linux 2.39 mount . . -o bind,rw - . mount(2) VFS . (The move operation) ( ). : mount --move olddir newdir olddir newdir . . olddir . (shared mount) . findmnt -o TARGET,PROPAGATION . (Shared subtree operations) 2.6.15 shared () private () slave () unbindable ( ) . . (slave) (master) . . bind . Documentation/filesystems/sharedsubtree.txt mount_namespaces(7) . : mount --make-shared mountpoint mount --make-slave mountpoint mount --make-private mountpoint mount --make-unbindable mountpoint : mount --make-rshared mountpoint mount --make-rslave mountpoint mount --make-rprivate mountpoint mount --make-runbindable mountpoint mount --make-* fstab(5) . . mount(2) . util-linux 2.23 mount () mount(8) . mount(2) . . fstab(5) (private slave shared unbindable rprivate rslave rshared runbindable). : mount --make-private --make-unbindable /dev/sda1 /foo : mount /dev/sda1 /foo mount --make-private /foo mount --make-unbindable /foo (COMMAND-LINE OPTIONS) mount fstab -o -r -w ( ) . mount /sbin/mount.suffix . mount (EXTERNAL HELPERS) . mount : -a, --all ( ) fstab ( noauto ). fstab . mount ( bind mount btrfs) . mount --all . fstab . /proc ( ) /sys ( UUID= LABEL=) . /proc /sys mount -a fstab . --all (remount) . (-t -O) . 2.35 -o fstab ( --options-mode ). mount -a fstab . findmnt --verify . -B, --bind ( ). (Bind mount operation) . -c, --no-canonicalize . mount ( fstab) . -f . mount -i . . X-mount.nocanonicalize . mount /sbin/mount.type . -F, --fork ( -a .) mount . NFS . NFS . . /usr /usr/spool . -f, --fake . --fake /etc/mtab . /etc/mtab 2.39 . --fake libmount . (fake) . --fake mount(8) . -i, --internal-only /sbin/mount.filesystem . -L, --label label label () . -l, --show-labels mount. mount ( set-user-ID root ). ext2 ext3 ext4 e2label(8) XFS xfs_admin(8) reiserfs reiserfstune(8) . -M, --move . (The move operation) . -m, --mkdir[=mode] ( ) . "-o X-mount.mkdir[=mode]" 0755 . X-mount.mkdir . --map-groups, --map-users inner:_outer_:_count_ / X-mount.idmap. . X-mount.idmap . --map-users /proc/PID/ns/user (id-mapped). "-o X-mount.idmap=/proc/PID/ns/user" inner:_outer_:_count_ . X-mount.idmap . -n, --no-mtab /etc/mtab. /etc . -N, --namespace ns ns . ns PID . mount /etc/fstab /etc/mtab ( /run/mount) mount(2) . mount(2) . mount_namespaces(7) . -O, --test-opts opts -a . -t -O -a . : mount -a -O no_netdev netdev /etc/fstab . -t no . -t -O : mount -a -t ext2 -O _netdev ext2 _netdev ext2 _netdev . -o, --options opts . opts . : mount LABEL=mydisk -o noatime,nodev,nosuid . fstab . . --onlyonce mount . --all . ( tmpfs). --options-mode mode fstab/mtab . mode ignore append prepend replace . append fstab . prepend -- fstab . . --options-source source . source fstab mtab disable . disable fstab mtab --options-source-force . fstab,mtab . --options-source-force fstab/mtab device dir . -R, --rbind ( ). (Bind mount operation) . -r, --read-only . -o ro . . ext3 ext4 . ext3 ext4 ro,noload blockdev(8) . -s (sloppy) . . . mount.nfs . --source device mount ( ) () . . --target directory mount . . --target-prefix directory . fstab : mount --all --target-prefix /chroot -o X-mount.mkdir fstab /chroot ( X-mount.mkdir). --fstab fstab . -T, --fstab path fstab . path strverscmp(3) "." .fstab . . initramfs chroot . mount --fstab /sbin/mount.type fstab . ( ) fstab . -t, --types fstype -t . . /proc/filesystems /lib/modules/$(uname -r)/kernel/fs . ext2 ext3 ext4 xfs btrfs vfat sysfs proc nfs cifs . mount umount(8) . '.subtype' . 'fuse.sshfs'. ( 'sshfs#example.com' ). -t auto mount . udev libblkid(3) . mount /etc/filesystems /proc/filesystems . "nodev" ( devpts proc nfs) . /etc/filesystems (*) mount /proc/filesystems . silent . ( ) libblkid(3) udev . udev fstab . /etc/filesystems ( vfat msdos ext3 ext2) . -t /etc/fstab . -t no . no /etc/fstab . no -a . : mount -a -t nomsdos,smbfs msdos smbfs . mount mount(2) . ( nfs nfs4 cifs smbfs ncpfs) . nfs nfs4 cifs smbfs ncpfs . mount type /sbin/mount.type ( ) . smbmount /sbin/mount.smbfs . -U, --uuid uuid uuid . -v, --verbose ( ). 2.41 . -w, --rw, --read-write -. - mount mount(2) - . -o rw . -w mount . -h, --help . -V, --version . (FILESYSTEM-INDEPENDENT MOUNT OPTIONS) /etc/fstab . . /proc/mounts . ( tune2fs -l extN ). (Virtual Filesystem Notes) (VFS) . . . nosuid noexec nodiratime relatime noatime strictatime nosymfollow . VFS : findmnt -o TARGET,VFS-OPTIONS,FS-OPTIONS 2.39 libmount VFS . ( rbind) . "recursive" : mount -orbind,ro=recursive,noexec=recursive,nosuid /foo /bar /foo /bar /bar noexec /bar "nosuid" . "recursive" VFS (EXPERIMENTAL) . (Read-only Setting Notes) (ro rw) mount(8) . . "-o bind,remount,ro" VFS "-o remount,ro" VFS . . 2.41 libmount vfs fs ( ro=fs) . : mount -o ro=vfs /dev/sdc1 /A - /A . "-o bind,remount,ro" . (Generic Mount Options) . sync ext2 ext3 ext4 fat vfat ufs xfs . async / (asynchronous) . ( sync .) atime noatime . relatime strictatime . noatime ( ). ( ) nodiratime . auto -a . noauto ( -a ). context=context, fscontext=context, defcontext=context, and rootcontext=context context= (xattr) VFAT SELinux ext3 ext4 SELinux . context= . xattr 2.4. . xattr . context="system_u:object_r:removable_t . fscontext= xattr . fscontext . . . xattr . context fscontext . defcontext= . (policy) xattr . rootcontext= . (stateless Linux) . @target . (remount) context . : context mount . . : mount -t tmpfs none /mnt -o \ 'context="system_u:object_r:tmp_t:s0:c127,c456",noexec' selinux(8) . defaults : rw suid dev exec auto nouser async. . . dev . nodev . diratime . . ( noatime .) nodiratime . ( noatime .) dirsync (synchronous) . : creat(2) link(2) unlink(2) symlink(2) mkdir(2) rmdir(2) mknod(2) rename(2). exec . noexec . group . nosuid nodev ( group,dev,suid). iversion i_version . noiversion i_version . mand (mandatory locking) . fcntl(2) . 5.15 . nomand . _netdev ( ). nofail . relatime . . ( noatime mutt(1) .) 2.6.30 ( noatime ) strictatime . 2.6.30 . norelatime relatime. strictatime . strictatime atime . relatime noatime . /proc/mounts . nostrictatime . lazytime (atime mtime ctime) . . : o o fsync(2) syncfs(2) sync(2) o o . nolazytime lazytime. suid set-user-ID set-group-ID (capabilities) . nosuid set-user-ID set-group-ID . SELinux nosuid_transition nnp_nosuid_transition . silent (silent). loud . owner . nosuid nodev ( owner,dev,suid). remount (remount) . . . bind . (Bind mount operation) . VFS (nodev, nosuid, noexec, ro) . mount(8) fstab /proc/self/mountinfo . --options-mode . ( v2.39 mount_setattr(2)) mount -o remount,ro=recursive / . mount fstab . mount fstab ( mtab) device dir . mount -o remount,rw /dev/foo /dir fstab ( mtab) loop= mount . mount -o remount,rw /dir mount fstab (-o) . fstab /proc/self/mountinfo . mount --all (-O -t) . : mount --all -o remount,ro -t vfat vfat . mount -o remount,ro /dir . mount fstab mtab . ro[=(recursive|vfs|fs)] . mount(2) . recursive VFS . vfs fs . fs ( ) vfs . . . rw[=(recursive|vfs|fs)] -. mount(2) . recursive VFS . vfs fs - . fs vfs . - . . sync / (synchronous) . ( ) sync . user . mtab . noexec nosuid nodev ( user,exec,dev,suid ). nouser . . users . noexec nosuid nodev ( users,exec,dev,suid ). X-* "X-" . ( mtab) mount.type mount(2) . X-appname.option . x-* X-* . umount(8) . libmount ( ). util-linux v2.30 x-* libmount ( X-* ) ( initrd systemd ) fstab . X-mount.auto-fstypes=list . list . "auto" . list mount ( -t ). "no" . X-mount.auto-fstypes="ext4,btrfs" ext4 btrfs X-mount.auto-fstypes="novfat,xfs" vfat xfs . auto-fstypes . : mount -t auto -o'X-mount.auto-fstypes="noext2,ext3"' /dev/sdc1 /mnt/test X-mount.mkdir[=mode] ( ) . mode mkdir(2) (octal) . 0755 . mount suid . x-mount.mkdir v2.30 . --mkdir . X-mount.nocanonicalize[=type] . mount . bind . type "source" "target" ( ) . type . ( LABEL= UUID=) fstab . --no-canonicalize open_tree bind-mount . mount(8) ( ) . . /dev/ . X-mount.noloop . X-mount.subdir=directory . . bind mount . bind . mount(2) . ( unshare --mount) mount(8) API . unshare --mount --propagation shared . ( ) 6.15 . (EXPERIMENTAL) . X-mount.owner=username|UID, X-mount.group=group|GID newdir/mountpoint . -N . X-mount.mode=mode newdir/mountpoint . X-mount.idmap=id-type:id-mount:id-host:id-range [id-type:id-mount:id-host:id-range], X-mount.idmap=file (idmapped mount) . . . : o . id-type:id-mount:id-host:id-range . u id-type UID g GID id-type b UID GID . id-mount . id-host . id-range . . . /etc/fstab . \040 . : X-mount.idmap=0:0:1\040500:1000:1. X-mount.idmap=u:1000:0:1 g:1001:1:2 5000:1000:2 : UID 0 UID 1000 GID 1 GUID 1001 GID 2 GID 1002 UID GID 1000 5000 UID GID 1001 5001 . . . o . . X-mount.idmap=/proc/PID/ns/user PID . nosymfollow . readlink(1) readlink(2) realpath(1) realpath(3) . (FILESYSTEM-SPECIFIC MOUNT OPTIONS) . . . +---------------------------+--------------------+ |() | | | | | +---------------------------+--------------------+ |btrfs | btrfs(5) | +---------------------------+--------------------+ |cifs | mount.cifs(8) | +---------------------------+--------------------+ |ext2, ext3, ext4 | ext4(5) | +---------------------------+--------------------+ |fuse | fuse(8) | +---------------------------+--------------------+ |nfs | nfs(5) | +---------------------------+--------------------+ |tmpfs | tmpfs(5) | +---------------------------+--------------------+ |xfs | xfs(5) | +---------------------------+--------------------+ . . . -o . . Documentation/filesystems . adfs uid=value gid=value (: uid=gid=0). ownmask=value othmask=value <> <> ADFS (: 0700 0077). /usr/src/linux/Documentation/filesystems/adfs.rst . affs uid=value gid=value (: uid=gid=0 uid gid UID GID ). setuid=value setgid=value . mode=value value & 0777 . (search) . . protect . usemp (sync) (umount) UID GID UID GID . ... verbose . prefix=string (volume) . volume=string ( ) '/' . reserved=value (: 2.) . root=value . bs=value . 512 1024 2048 4096. grpquota|noquota|quota|usrquota . ( /etc/fstab .) debugfs debugfs /sys/kernel/debug . 3.4 : uid=n, gid=n . mode=value . devpts devpts /dev/pts . /dev/ptmx /dev/pts/ . uid=value gid=value . UID GID . tty GID 5 gid=5 tty . mode=value . 0600 . mode=620 gid=5 "mesg y" . newinstance devpts devpts . devpts newinstance ( ). devpts newinstance . . 2.6.29 . CONFIG_DEVPTS_MULTIPLE_INSTANCES . /dev/ptmx pts/ptmx . Documentation/filesystems/devpts.txt . ptmxmode=value ptmx devpts . devpts ( newinstance ) ptmx devpts ( /dev/pts/ptmx). ptmx 0000 . ptmxmode=value ptmx newinstance . 2.6.29 CONFIG_DEVPTS_MULTIPLE_INSTANCES . fat (: fat msdos umsdos vfat .) blocksize={512|1024|2048} ( 512). . uid=value gid=value . (: UID GID .) umask=value umask ( ). umask . . dmask=value umask . umask . . fmask=value umask . umask . . allow_utime=value mtime/atime . 20 . 2 . 'dmask' . ( utime(2) dmask & 022~). utime(2) CAP_FOWNER . FAT UID/GID . . check=value : r[elaxed] ( verylongname.foobar verylong.foo ) . n[ormal] relaxed (* ? < ) . . s[trict] normal MS-DOS (+ = ) . codepage=value FAT VFAT . 437 . conv=mode . cvf_format=module CVF ( ) cvf_module . kmod cvf_format=xxx CVF . . cvf_option=option CVF . . debug debug. . discard discard/TRIM . SSD . dos1xfloppy BIOS . errors={panic|continue|remount-ro} FAT : panic ( ) continue ( ) remount-ro ( ). fat={12|16|32} FAT . FAT . ! iocharset=value . iso8859-1 . . nfs={stale_rw|nostale_ro} FAT NFS . stale_rw: NFS . nostale_ro: . . -o nfs stale_rw . tz=UTC UTC . time_offset=minutes FAT UTC . quiet quiet. chown chmod . rodir ATTR_RO . ATTR_RO . showexec EXE. COM. BAT. . . sys_immutable ATTR_SYS FAT IMMUTABLE . flush . usefree <> FSINFO . dots, nodots, dotsOK=[yes|no] FAT. hfs creator=cccc, type=cccc / (creator/type) . uid=n, gid=n . (: UID GID .) dir_umask=n, file_umask=n, umask=n umask . session=n CDROM . part=n n . CDROM . quiet . hpfs uid=value gid=value . umask=value umask . . case={lower|asis} (: case=lower). conv=mode . nocheck . iso9660 ISO 9660 CD-ROM . ( DVD udf .) iso9660 8.3 . . Rock Ridge iso9660 ( ) . norock Rock Ridge . nojoliet Microsoft Joliet . check={r[elaxed]|s[trict]} check=relaxed . (: check=strict.) uid=value gid=value . (: uid=0, gid=0.) map={n[ormal]|o[ff]|a[corn]} Rock Ridge (: map=normal). mode=value Rock Ridge . unhide . block={512|1024|2048} (: block=1024). conv=mode . cruft . session=x CD . sbsector=xxx xxx . vfat Joliet : iocharset=value CD . iso8859-1 . utf8 CD UTF-8. jfs iocharset=name . resize=value value . JFS . nointegrity . . integrity . . errors={continue|remount-ro|panic} . noquota|quota|usrquota|grpquota . msdos fat . msdos . ncpfs nfs ncpfs mount(2) ncpmount(8) . ntfs iocharset=name . . nls=name iocharset . utf8 UTF-8 . uni_xlate={0|1|2} vfat . posix=[0|1] (posix=1) . . uid=value, gid=value umask=value . root . overlay 3.18 overlay (union mount) . overlay : (upper) (lower). . . overlayfs . trusted.* d_type readdir NFS . overlay . lowerdir upperdir : mount -t overlay overlay \ -olowerdir=/lower,upperdir=/upper,workdir=/work /merged lowerdir=directory . upperdir=directory upperdir . workdir=directory workdir upperdir . userxattr "user.overlay." "trusted.overlay.". overlayfs . redirect_dir={on|off|follow|nofollow} redirect_dir ( ). "{trusted|user}.overlay.redirect" overlay . . on . off "redirect_always_follow" / . follow . nofollow . index={on|off} . <<>> . uuid={on|off} UUID null UUID . nfs_export={on|off} NFS "nfs_export" overlay NFS . xino={on|off|auto} "xino" st_ino fsid . : metacopy={on|off} overlayfs chown/chmod . . volatile (volatile) . overlay . sync . reiserfs Reiserfs . conv reiserfs 3.6 3.5 3.6 . hash={rupasov|tea|r5|detect} . r5 . hashed_relocation no_unhashed_relocation . noborder . nolog . notail reiserfs . . replayonly . resize=number reiserfs. user_xattr . attr(1) . acl POSIX. acl(5) . barrier=none / barrier=flush / ( barrier=flush ). ubifs UBIFS UBI . atime . ubiX_Y ubiY ubiX:NAME ubi:NAME . : bulk_read (bulk-read). no_bulk_read . . chk_data_crc CRC-32 . . no_chk_data_crc CRC-32 . compr={none|lzo|zlib} . udf UDF <> DVD-ROM . uid= gid= . forget uids/gids . umask= mode= dmode= . bs= . unhide undelete . adinicb / noadinicb ( adinicb ). shortad / longad UDF ( longad ). nostrict . iocharset= utf8 NLS UTF-8. novrs . session= ( ). anchor= ( 256 ). lastblock= . uid=ignore gid=ignore volume= partition= fileset= rootdir= . ufs ufstype=value UFS . : old ( ) 44bsd ( BSD) ufs2 5xbsd ( FreeBSD 5.x -) sun ( SunOS Sparc) sunx86 ( x86) hp ( HP-UX) nextstep nextstep-cd openstep ( macOS ). onerror=value : panic ( ) lock umount repair . umsdos msdos . dotsOK umsdos . vfat fat . dotsOK vfat . : uni_xlate . posix . . nonumtail name~num.ext. utf8 UTF-8 . shortname=mode 8.3 : lower win95 winnt mixed ( 2.6.32). usbfs devuid= devgid= devmode= usbfs (: uid=gid=0, mode=0644). busuid= busgid= busmode= usbfs (: uid=gid=0, mode=0555). listuid= listgid= listmode= devices (: uid=gid=0, mode=0444). DM-VERITY (DM-VERITY SUPPORT) verity (device-mapper) API . mount dm-verity . libcryptsetup libmount ( dlopen(3)). libcryptsetup . dm-verity: verity.hashdevice=path dm-verity. verity.roothash=hex verity.hashdevice. verity.roothashfile. verity.roothashfile=path verity.hashdevice. verity.roothash. verity.hashoffset=offset offset (: 0) dm-verity . verity.fecdevice=path (FEC) dm-verity. . CONFIG_DM_VERITY_FEC . verity.fecoffset=offset FEC offset (: 0) dm-verity FEC . . verity.fecroots=value (parity) FEC (: 2). . verity.roothashsig=path pkcs7(1ssl) . crypt_activate_by_signed_key() cryptsetup CONFIG_DM_VERITY_VERIFY_ROOTHASH_SIG . . . verity.oncorruption=ignore|restart|panic (panic) . / . 4.1 libcryptsetup 2.3.4 . . util-linux v2.35. : mksquashfs /etc /tmp/etc.raw veritysetup format /tmp/etc.raw /tmp/etc.verity --root-hash-file=/tmp/etc.roothash openssl smime -sign -in /tmp/etc.roothash -nocerts -inkey private.key \ -signer private.crt -noattr -binary -outform der -out /tmp/etc.roothash.p7s mount -o verity.hashdevice=/tmp/etc.verity,verity.roothashfile=/tmp/etc.roothash,\ verity.roothashsig=/tmp/etc.roothash.p7s /tmp/etc.raw /mnt squashfs /etc verity /mnt . roothashsig . (LOOP-DEVICE SUPPORT) (loop device) . : mount /tmp/disk.img /mnt -t vfat -o loop=/dev/loop3 /dev/loop3 /tmp/disk.img /mnt . ( '-o loop' ) mount : mount /tmp/disk.img /mnt -o loop mount libblkid : mount /tmp/disk.img /mnt mount -t ext4 /tmp/disk.img /mnt loop offset sizelimit losetup(8) . ( .) 2.6.25 mount /etc/mtab umount . losetup -d umount -d . util-linux v2.29 offset sizelimit mount . . (EXIT STATUS) mount ( OR ): 0 1 2 ( fork ) 4 mount 8 16 /etc/mtab 32 64 mount -a 0 ( ) 32 ( ) 64 ( ) . 126 /sbin/mount. ( util-linux v2.41) (EXTERNAL HELPERS) : /sbin/mount.suffix spec dir [-sfnv] [-N namespace] [-o options] [-t type.subtype] suffix -sfnvoN . -t ( /sbin/mount.fuse -t fuse.sshfs). mount unbindable runbindable private rprivate slave rslave shared rshared auto noauto comment x-* loop offset sizelimit mount. . -o . mount(8) . ()execl 126 . (ENVIRONMENT) LIBMOUNT_FORCE_MOUNT2={always|never|auto} mount(2) ( ). auto libmount mount(2) . libmount mount(2) never . LIBMOUNT_FSTAB= fstab ( suid ). LIBMOUNT_DEBUG=all libmount . LIBBLKID_DEBUG=all libblkid . LOOPDEV_DEBUG=all . (FILES) << /etc/fstab /etc/mtab /proc/mounts>> . /etc/fstab /run/mount libmount /etc/mtab /proc/mounts /etc/mtab~ ( mtab ) /etc/mtab.tmp ( mtab ) /etc/filesystems (HISTORY) mount AT&T . (BUGS) (crash) . -o sync -o dirsync ( ext2 ext3 ext4 fat vfat sync ). -o remount ( ext2fs sb remount gid umask fatfs ). /etc/mtab /proc/mounts mtab . mount ( NFS). mtab /proc/mounts . NFS noac . loop offset sizelimit mount . losetup(8) mount . (AUTHORS) Karel Zak (SEE ALSO) mount(2), umount(2), filesystems(5), fstab(5), nfs(5), xfs(5), mount_namespaces(7), xattr(7), e2label(8), findmnt(8), losetup(8), lsblk(8), mke2fs(8), mountd(8), nfsd(8), swapon(8), tune2fs(8), umount(8), xfs_admin(8) (REPORTING BUGS) : . (AVAILABILITY) mount util-linux : . util-linux MOUNT(8)