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5

1

After adding a new mount point in /etc/fstab, we usually execute mount -a to reflect the change (if we want to by bypass reboot), and df -kh output shows the new mount point.

How does mount -a work/impact already mounted partitions, which has reference to /etc/fstab file? Does it umount and then mount those partitions or just ignore since it is already mounted?

linux mount partition fstab

share|improve this question

edited 5 mins ago

RonJohn

559416

asked 17 hours ago

RaufRauf

4412

add a comment | 

5

1

After adding a new mount point in /etc/fstab, we usually execute mount -a to reflect the change (if we want to by bypass reboot), and df -kh output shows the new mount point.

How does mount -a work/impact already mounted partitions, which has reference to /etc/fstab file? Does it umount and then mount those partitions or just ignore since it is already mounted?

linux mount partition fstab

share|improve this question

edited 5 mins ago

RonJohn

559416

asked 17 hours ago

RaufRauf

4412

add a comment | 

After adding a new mount point in /etc/fstab, we usually execute mount -a to reflect the change (if we want to by bypass reboot), and df -kh output shows the new mount point.

How does mount -a work/impact already mounted partitions, which has reference to /etc/fstab file? Does it umount and then mount those partitions or just ignore since it is already mounted?

linux mount partition fstab

share|improve this question

edited 5 mins ago

RonJohn

559416

asked 17 hours ago

RaufRauf

4412

share|improve this question

edited 5 mins ago

RonJohn

559416

asked 17 hours ago

RaufRauf

4412

share|improve this question

edited 5 mins ago

RonJohn

559416

asked 17 hours ago

RaufRauf

4412

edited 5 mins ago

RonJohn

559416

edited 5 mins ago

RonJohn

559416

asked 17 hours ago

RaufRauf

4412

asked 17 hours ago

RaufRauf

4412

2 Answers
2

active

oldest

votes

11

It skips ones already mounted.

https://github.com/karelzak/util-linux/blob/master/sys-utils/mount.c#L185-L193

while (mnt_context_next_mount(cxt, itr, &fs, &mntrc, &ignored) == 0) {



    const char *tgt = mnt_fs_get_target(fs);



    if (ignored) {

        if (mnt_context_is_verbose(cxt))

            printf(ignored == 1 ? _("%-25s: ignoredn") :

                          _("%-25s: already mountedn"),

                    tgt);

share|improve this answer

answered 17 hours ago

stevesteve

14.6k22956

add a comment | 

4

It will ignore already mounted partitions.

In the same time, you can do a mount -o remount /dev/xxx on a partition already mounted, this won't cause any problem even if users are using this partition

share|improve this answer

answered 17 hours ago

darxmurfdarxmurf

60711

add a comment | 

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11

It skips ones already mounted.

https://github.com/karelzak/util-linux/blob/master/sys-utils/mount.c#L185-L193

while (mnt_context_next_mount(cxt, itr, &fs, &mntrc, &ignored) == 0) {



    const char *tgt = mnt_fs_get_target(fs);



    if (ignored) {

        if (mnt_context_is_verbose(cxt))

            printf(ignored == 1 ? _("%-25s: ignoredn") :

                          _("%-25s: already mountedn"),

                    tgt);

share|improve this answer

answered 17 hours ago

stevesteve

14.6k22956

add a comment | 

11

It skips ones already mounted.

https://github.com/karelzak/util-linux/blob/master/sys-utils/mount.c#L185-L193

while (mnt_context_next_mount(cxt, itr, &fs, &mntrc, &ignored) == 0) {



    const char *tgt = mnt_fs_get_target(fs);



    if (ignored) {

        if (mnt_context_is_verbose(cxt))

            printf(ignored == 1 ? _("%-25s: ignoredn") :

                          _("%-25s: already mountedn"),

                    tgt);

share|improve this answer

answered 17 hours ago

stevesteve

14.6k22956

add a comment | 

It skips ones already mounted.

https://github.com/karelzak/util-linux/blob/master/sys-utils/mount.c#L185-L193

while (mnt_context_next_mount(cxt, itr, &fs, &mntrc, &ignored) == 0) {



    const char *tgt = mnt_fs_get_target(fs);



    if (ignored) {

        if (mnt_context_is_verbose(cxt))

            printf(ignored == 1 ? _("%-25s: ignoredn") :

                          _("%-25s: already mountedn"),

                    tgt);

share|improve this answer

answered 17 hours ago

stevesteve

14.6k22956

while (mnt_context_next_mount(cxt, itr, &fs, &mntrc, &ignored) == 0) {



    const char *tgt = mnt_fs_get_target(fs);



    if (ignored) {

        if (mnt_context_is_verbose(cxt))

            printf(ignored == 1 ? _("%-25s: ignoredn") :

                          _("%-25s: already mountedn"),

                    tgt);

share|improve this answer

answered 17 hours ago

stevesteve

14.6k22956

answered 17 hours ago

stevesteve

14.6k22956

answered 17 hours ago

stevesteve

14.6k22956

4

It will ignore already mounted partitions.

In the same time, you can do a mount -o remount /dev/xxx on a partition already mounted, this won't cause any problem even if users are using this partition

share|improve this answer

answered 17 hours ago

darxmurfdarxmurf

60711

add a comment | 

4

It will ignore already mounted partitions.

In the same time, you can do a mount -o remount /dev/xxx on a partition already mounted, this won't cause any problem even if users are using this partition

share|improve this answer

answered 17 hours ago

darxmurfdarxmurf

60711

add a comment | 

It will ignore already mounted partitions.

In the same time, you can do a mount -o remount /dev/xxx on a partition already mounted, this won't cause any problem even if users are using this partition

share|improve this answer

answered 17 hours ago

darxmurfdarxmurf

60711

share|improve this answer

answered 17 hours ago

darxmurfdarxmurf

60711

answered 17 hours ago

darxmurfdarxmurf

60711

answered 17 hours ago

darxmurfdarxmurf

60711