Bug 917008
| Summary: | mount --move doesn't work | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Petr Sklenar <psklenar> |
| Component: | util-linux | Assignee: | Karel Zak <kzak> |
| Status: | CLOSED CURRENTRELEASE | QA Contact: | Jan Ščotka <jscotka> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 7.0 | CC: | jscotka |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | util-linux-2.23-0.5 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2014-06-13 09:39:42 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Are you really sure that the used parents (mountpoints) are private? The current default in RHEL7 (not sure about RHEL6) is "shared", see /proc/self/mountinfo for the shared flag.
Linux kernel does not allow to move between shared targets.
Fedora 18:
# mount --bind /mnt/test /mnt/test
# mount --make-private /mnt/test
# mkdir /mnt/test/{foo,bar}
# mount /dev/sdb /mnt/test/foo
# findmnt /dev/sdb
TARGET SOURCE FSTYPE OPTIONS
/mnt/test/foo /dev/sdb ext2 rw,relatime,stripe=32
# mount --move /mnt/test/foo /mnt/test/bar
# findmnt /dev/sdb
TARGET SOURCE FSTYPE OPTIONS
/mnt/test/bar /dev/sdb ext2 rw,relatime,stripe=32
Fixed by upstream commit fcc0413a12efde3f413064a622ea0a0595ede49f (util-linux >= 2.23-rc2).
# mount --move /a /b
mount: bad option. Note that moving a mount residing under a shared
mount is unsupported.
This request was resolved in Red Hat Enterprise Linux 7.0. Contact your manager or support representative in case you have further questions about the request. |
Description of problem: mount --move doesn't work Version-Release number of selected component (if applicable): util-linux-2.22.1-2.4.el7.x86_64 Linux pes-guest-92.lab.eng.brq.redhat.com 3.7.0-0.32.el7.x86_64 #1 SMP Fri Jan 18 11:50:31 EST 2013 x86_64 x86_64 x86_64 GNU/Linux How reproducible: always Steps to Reproduce: 1. mount xyz:/mnt/qa on /mnt/qa 2. mkdir /tmp/1234 3. mount --move /mnt/qa /tmp/1234 Actual results: # mount -M /mnt/qa /tmp/tmp.fIC9T6y9lw mount: wrong fs type, bad option, bad superblock on /mnt/qa, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so Expected results: mount is moved Additional info: