UX:vxfs mount: ERROR: V-3-21264: /dev/vx/dsk/jdg/jvol is already mounted, /jvol_global is busy, allowable number of mount points exceeded

Article: 100001479
Last Published: 2012-07-21
Ratings: 0 1
Product(s): InfoScale & Storage Foundation

Problem

UX:vxfs mount: ERROR: V-3-21264: /dev/vx/dsk/jdg/jvol is already mounted, /jvol_global is busy, allowable number of mount points exceeded

Solution

When the file system gets disabled with an I/O error, the process might still hold the mount point, and it would prevent mounting back the file system later.

If the system has a non-global(or local) zone with a loopback file system, then you might see I/O error on the lofs inside the zone, and it should be cleaned up as well.

You can see the 2 entry for the file system; one for local file system, and the other for loopback file system(lofs) for none-global zone.

# mount |grep jvol
/jvol_global on /dev/vx/dsk/jdg/jvol read/write/setuid/devices/delaylog/largefiles/qio/ioerror=mwdisable/dev=4c8afc8 on Mon Apr 12 10:32:50 2010
/zone/jzone/root/jvol_local on /jvol_global read/write/setuid/devices/dev=4c8afc8 on Mon Apr 12 10:33:09 2010


Error Message when you try to mount the file system:

# mount -F vxfs /dev/vx/dsk/jdg/jvol /jvol_global
UX:vxfs mount: ERROR: V-3-21264: /dev/vx/dsk/jdg/jvol is already mounted, /jvol_global is busy,
allowable number of mount points exceeded


Solution:

(1) umount the file system from global zone.

# umount -f /jvol_global

Note: should use '-f' as normally some process still holding the mount point.


(2) umount the lofs in global zone

force option(-f) is not available for lofs, so you have to kill all the processes are running on the file system in the local zone before umount it.

# fuser -cu /zone/jzone/root/jvol_local
/zone/jzone/root/jvol_local: 26059c(root) 24336c(root)

# fuser -k /zone/jzone/root/jvol_local
/zone/jzone/root/jvol_local: 26264c 24336c

# umount /zone/jzone/root/jvol_local

(3) mount back the file system in global zone.

# mount -F vxfs /dev/vx/dsk/jdg/jvol /jvol_global

 

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