Re: inconsistent mount attributes (ro/rw), RHEL5 / Netapp

["Gregory Baker" <gregory.baker@amd.com>]

Trond Myklebust wrote:
 > On Thu, 2007-04-19 at 15:37 -0500, Gregory Baker wrote:
 >
 >> ---+ BAD RHEL 5 64 system
 > ...
 >> [root@adcgar04 mnt2]# cat /proc/mounts | grep mnt2
 >> eng:/vol/vol4/pandora/pandora-k26_g25_64-2 /mnt2 nfs
 >> 
ro,vers=3,rsize=65536,wsize=65536,hard,intr,proto=tcp,timeo=600,retrans=2,sec=sys,addr=eng 

 >> 0 0
 >
 > That would be your problem right there. Is the same volume perhaps
 > mounted read-only somewhere else on the same client? That is no longer
 > allowed.
 >
 > Cheers
 >   Trond
 >

Ah, news to me!

So if you mount a volume ro at one mount point /mnt1 and then try to 
mount the same volume rw at a second mount point /mnt2 you'll run into 
problems?  Apologies, didn't catch this in release notes.  Thanks!

--Greg

---+ A New Beginning

[root@adcgar04 /]# umount -a -t nfs

[root@adcgar04 /]# mount -v | grep pandora

[root@adcgar04 /]# cat /proc/mounts | grep pandora

[root@adcgar04 /]# mount eng:/vol/vol4/pandora/pandora-k26_g25_64-2 /mnt2

[root@adcgar04 /]# mount -v | grep pandora
eng:/vol/vol4/pandora/pandora-k26_g25_64-2 on /mnt2 type nfs 
(rw,addr=163.181.34.137)

[root@adcgar04 /]# cat /proc/mounts | grep pandora
eng:/vol/vol4/pandora/pandora-k26_g25_64-2 /mnt2 nfs 
rw,vers=3,rsize=65536,wsize=65536,hard,proto=tcp,timeo=600,retrans=2,sec=sys,addr=eng 
0 0

[root@adcgar04 /]# touch /mnt2/asdf

---+ The ro Strikes Back

[root@adcgar04 /]# mount -o ro 
eng:/vol/vol4/pandora/pandora-k26_g25_64-2 /mnt1

[root@adcgar04 /]# mount -o rw 
eng:/vol/vol4/pandora/pandora-k26_g25_64-2 /mnt2

[root@adcgar04 /]# mount -v | grep mnt
eng:/vol/vol4/pandora/pandora-k26_g25_64-2 on /mnt1 type nfs 
(ro,addr=163.181.34.137)
eng:/vol/vol4/pandora/pandora-k26_g25_64-2 on /mnt2 type nfs 
(rw,addr=163.181.34.137)

[root@adcgar04 /]# cat /proc/mounts | grep mnt
eng:/vol/vol4/pandora/pandora-k26_g25_64-2 /mnt1 nfs 
ro,vers=3,rsize=65536,wsize=65536,hard,proto=tcp,timeo=600,retrans=2,sec=sys,addr=eng 
0 0
eng:/vol/vol4/pandora/pandora-k26_g25_64-2 /mnt2 nfs 
ro,vers=3,rsize=65536,wsize=65536,hard,proto=tcp,timeo=600,retrans=2,sec=sys,addr=eng 
0 0

[root@adcgar04 /]# touch /mnt2/asdf
touch: cannot touch `/mnt2/asdf': Read-only file system





-- 
----------------------------------------------------------------------
Greg Baker                                         512-602-3287 (work)
gregory.baker@amd.com                              512-602-6970 (fax)
5204 E. Ben White Blvd MS 625                      512-555-1212 (info)
Austin, TX 78741




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