Mount Point goes into a very strange state.


 
Thread Tools Search this Thread
Top Forums UNIX for Advanced & Expert Users Mount Point goes into a very strange state.
# 1  
Old 11-29-2019
Mount Point goes into a very strange state.

Hi Guys,

This one has got me completely baffled and after some fairly lengthy searching online and in the forum, I think I should share this with you - after all someone is bound to have seen this?

So the story so far, I've built a couple of RHEL 7.5 servers, these are HP DL360 G10's with two six core Xeon, 4 * 300Gb SSD and 64Gb RAM along with 6 network connections in bonds - all good so far.

While building the test server I lost a couple of directories to the same fault and effectively just recreated the box from an image due to time constraints.

However, I now have the problem again and am getting ready to go out in the carpark with the other SA and perform the formation headless chicken dance. The problem shows up as follows on both XFS and in this case a CIFS mount.

Mount the Share;

Code:
mount -t cifs -o username=XXXXXX,password=XXXXXX,dir_mode=0775,uid=520,gid=500 //CATHNAS01/SP_DB_EXP /mnt

This bit works and gives;
Code:
fbakirpomp2 (root) /-> df -h /mnt
Filesystem             Size  Used Avail Use% Mounted on
//CATHNAS01/SP_DB_EXP  1.5T 1000G  501G  67% /mnt
fbakirpomp2 (root) /->
fbakirpomp2 (root) /-> ls -l / | grep mnt
drwxrwxr-x    1 oraogi  dba         0 Nov 12 16:40 mnt
drwxr-xr-x    2 root    root     4096 Oct  3  2016 mnt1
fbakirpomp2 (root) /->

All good so far;
However after a little while (on the machine with the problem) we get;
Code:
[root@fbakirpomp3 ~]# df -h /mnt
df: '/mnt': No such device or address
[root@fbakirpomp3 ~]# ls -l / | grep mnt
ls: cannot access /mnt: No such device or address
d??????????   ? ?       ?          ?            ? mnt
[root@fbakirpomp3 ~]#

So it would seem that the mountpoint has really got itself in a panic, any pointes here would be handy.

The RHEL 7.5 install exhibits this "feature" in the version installed straight from media and the version where I have patched from the RHSM repo with the following command.
Code:
yum install yum-plugin-versionlock
  yum --releasever=7.5 update

So if anyone has seen this problem or has any pointers I'd be very grateful.

Regards

Gull04
hist

Last edited by vbe; 11-29-2019 at 07:26 AM..
# 2  
Old 11-29-2019
Yes, well, there have been all sorts of screw ups in the development of these modules as new security features have (tried) to be added.

I think this is probably a known bug.

Have you tried:

Code:
mount -t cifs -o username=XXXXXX,password=XXXXXX,dir_mode=0775,uid=520,gid=500,vers=1.0 //CATHNAS01/SP_DB_EXP /mnt

(i.e. using a previous version) to see if it stays up?

If vers=1.0 works then try vers=2.0

Or have you already tried that? You could also (if you are the sysadmin) try this on the share publishing end of things too.

Backing out to previous version(s) is where I would start but perhaps you've already tried that.
# 3  
Old 11-29-2019
Another thought is this. There have also been issues with such mounts resuming activity after hibernation (or link timeout) whereby upon resumption there is a problem authenticating (credentials error). Does this error only occur after a significant inactivity on the share? Does it not happen if you keep it busy? Could be useful to test that out.
# 4  
Old 11-29-2019
Hey.

Normally, on Linux systems, dmesg will show strange things at the H/W level.

Can you post your dmesg output?
# 5  
Old 11-29-2019
Hi Guys,

Some more info on this, but first the dmesg output - well the bit that matters I think.

Code:
[49732.732763] CIFS VFS: Send error in QFSAttributeInfo = -6
[49732.735099] CIFS VFS: cifs_mount failed w/return code = -6
[49732.737252] CIFS VFS: Send error in QFSAttributeInfo = -6
[49732.739391] CIFS VFS: cifs_mount failed w/return code = -6
[49744.903644] IPv4: martian source 255.255.255.255 from 10.1.100.205, on dev bond1
[49744.903661] ll header: 00000000: ff ff ff ff ff ff 00 50 56 aa 3e a5 08 00        .......PV.>...
[49777.214179] CIFS VFS: Send error in QFSAttributeInfo = -6
[49777.216321] CIFS VFS: cifs_mount failed w/return code = -6
[49777.218360] CIFS VFS: Send error in QFSAttributeInfo = -6
[49777.220431] CIFS VFS: cifs_mount failed w/return code = -6
[49804.989527] IPv4: martian source 255.255.255.255 from 10.1.100.205, on dev bond1
[49804.989544] ll header: 00000000: ff ff ff ff ff ff 00 50 56 aa 3e a5 08 00        .......PV.>...
[49865.075246] IPv4: martian source 255.255.255.255 from 10.1.100.205, on dev bond1
[49865.075262] ll header: 00000000: ff ff ff ff ff ff 00 50 56 aa 3e a5 08 00        .......PV.>...
[49925.161052] IPv4: martian source 255.255.255.255 from 10.1.100.205, on dev bond1
[49925.161068] ll header: 00000000: ff ff ff ff ff ff 00 50 56 aa 3e a5 08 00        .......PV.>...
[49948.451752] CIFS VFS: Send error in QFSAttributeInfo = -6
[49948.453737] CIFS VFS: cifs_mount failed w/return code = -6
[49948.455770] CIFS VFS: Send error in QFSAttributeInfo = -6
[49948.457747] CIFS VFS: cifs_mount failed w/return code = -6
[49974.570525] CIFS VFS: Send error in QFSAttributeInfo = -6
[49974.572493] CIFS VFS: cifs_mount failed w/return code = -6
[49974.574587] CIFS VFS: Send error in QFSAttributeInfo = -6
[49974.576472] CIFS VFS: cifs_mount failed w/return code = -6

I've currently got this set to version 1.0 for the CIFS type.

I think that I've resolved this, as I said in the first post it happened on my test build server as well and I've made a bit more progress.

Currently I'd like people to consider this thread closed and I'll post a fuller update when I return to the office on Monday. This seems to have turned out to be an LVM issue - which I think was caused by the installer.

I'll post a detailed explanation soon, I'm off to sunny Skye now which is a four hour drive for me if I leave now.

Regards

Gull04
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. AIX

AIX lsvg strange LV STATE and MOUNT POINT

What does it mean when your LV STATE changes to closed/syncd? What does it mean when your mount point is #? I was not able to mount it or write data to it. So in this case since there was no data in /opt/cvt I used rmlv to get rid of it. Why did I have to manually edit /etc/filesystems to get rid... (1 Reply)
Discussion started by: cokedude
1 Replies

2. UNIX for Beginners Questions & Answers

How to create a new mount point with 600GB and add 350 GBexisting mount point? IN AIX

How to create a new mount point with 600GB and add 350 GBexisting mount point Best if there step that i can follow or execute before i mount or add diskspace IN AIX Thanks (2 Replies)
Discussion started by: Thilagarajan
2 Replies

3. Solaris

Sol 10 - Strange NFS behaviour - adminnfs prefix to mount point

Something has changed..... /etc/vfstab entry:- host1:/backup/RMAN - /RMAN nfs - no rw,hard,rsize=32768,wsize=32768,llockBut when I mount it, and run df -k | grep RMANResults are:- host1:/backup/RMAN 54971960832 26752241664 28219719168 49% ... (1 Reply)
Discussion started by: psychocandy
1 Replies

4. AIX

How to change the mount point of LV?

I have situation where my disk upon reboot, has its mount point as # LOGICAL VOLUME: disk4vol VOLUME GROUP: disk4vg LV IDENTIFIER: 00f609aa00004c0000000152414b786c.1 PERMISSION: read/write VG STATE: active/complete LV STATE: closed/syncd TYPE: jfs2 WRITE VERIFY: off MAX LPs: 512 PP SIZE: 512... (1 Reply)
Discussion started by: mrmurdock
1 Replies

5. Red Hat

Regarding NFS mount point

Dear All, We have two different mount points in Linux NFS one is 15 TB and another one is 15 TB. Can we club both of the two mount points and club in to a single volume in Linux. As we need to restore Database in that single volume. Kindly help us on this. Regards , rj (10 Replies)
Discussion started by: jegaraman
10 Replies

6. Red Hat

NFS mount point

Hi, Can you tell me something about NFS mount point ? Regards, Maddy (3 Replies)
Discussion started by: Maddy123
3 Replies

7. UNIX for Advanced & Expert Users

mount point lists

is there any command to know the list of mount points in a server.i need only the mount point lists.i tried using df but it was not helpful.i am using Solaris (1 Reply)
Discussion started by: dr46014
1 Replies

8. UNIX for Dummies Questions & Answers

concept of mount point

Hi All I Know it is a really basic and stupid question perhaps...But I am going bonkers.. I have following valid paths in my unix system: 1. /opt/cdedev/informatica/InfSrv/app/bin 2. /vikas/cdedev/app Both refer to the same physical location. So if I created one file 'test' in first... (3 Replies)
Discussion started by: Vikas Sood
3 Replies

9. UNIX for Dummies Questions & Answers

mount point

hi people, I'm trying to create a mount point, but am having no sucess at all, with the following: mount -F ufs /dev/dsk/diskname /newdirectory but i keep getting - mount-point /newdirectory doesn't exist. What am i doing wrong/missing? Thanks Rc (1 Reply)
Discussion started by: colesy
1 Replies

10. UNIX for Dummies Questions & Answers

Recover mount point

A disk was sliced into 6 slices with m01 being the mount point for one of the slices. This mount point was deleted with rmdir (ie. rmdir m01). What is the easiest way to recover this mount point? (1 Reply)
Discussion started by: here2learn
1 Replies
Login or Register to Ask a Question