Ext3 filesystems on san become read only Post: 302913376

Sponsored Content

Operating Systems Linux Red Hat Ext3 filesystems on san become read only Post 302913376 by mig28mx on Friday 15th of August 2014 07:30:05 PM

08-15-2014

Registered User

multipath problem?

Hi all,
Thank you for your opinions.

The fact is, due to this is my productive database and this server is off-site, I can�t has Access to the hardware surrounding the SAN, fiber, etc.

When the system is starting, we see a double path for the SAN LUN.

The weird thing is: when I started to use the "default" path, the disks begin to fail after 15 minutes and the failure message start to appear. And then, the filesystems switchs to read only in order to protect the information.

Under this conditions, on the mounting points file, we comment the secondary path, in order to see just one. After doing this, the error message go away.

So, when I run the requested command multipath -l, appears like the command are unavailable.

This is possible?
I mean, work over a SAN without multipath enabled?
What is this two paths that I see in the boot process?

As far as I have knowledge on the hardware configuration, the server has 1 HBA card with two fiber distributed over 2 switches connected to the SAN.
Can be possible to have a one fibre with failure?
If this is true, an alert must be trown to the console, right?

Thank you all.

mig28mx

View Public Profile for mig28mx

Find all posts by mig28mx

10 More Discussions You Might Find Interesting

1. Filesystems, Disks and Memory

ext3 filesystem

what do you think about the ext3 journal filesystem??

2. Filesystems, Disks and Memory

ReiserFS vs ext3 vs anything else?

As i'm sure you all know, ext2 (and then ext3) is the most widely used linux fs... but some distros (SUSE & Debian) are now chosing to either use by default, or at least give the option of using ReiserFS. What is it about ReiserFS that's so great exactly? I understand that it has a limitless...

3. UNIX for Dummies Questions & Answers

/ext2 and /ext3

Hi all, I was installing linux, so i want to know the basic difference between /ext2 and /ext3 filetype.. what is the significance of using /ext2 and /ext3 pls clarify Thanks Vasikaran

4. Solaris

Thoughts/experiences of SAN attaching V880 to EMC SAN

Hi everyone, I wonder if I can canvas any opinions or thoughts (good or bad) on SAN attaching a SUN V880/490 to an EMC Clarion SAN? At the moment the 880 is using 12 internal FC-AL disks as a db server and seems to be doing a pretty good job. It is not I/O, CPU or Memory constrained and the...

5. UNIX for Dummies Questions & Answers

Mounting fs ext3

I'm trying to find a correct command that will mount a filesystem ext3 the device /dev/sda1 to mount point /mnt/usb but not allow any programs to run from it. I want to be honest as I've read the forum rules... This is a homework question BUT, i'm generally interested in the correct process and...

6. UNIX for Dummies Questions & Answers

Read only filesystems

hi guys suse 10.2 today some guys are adding some luns from a SAN so in order to add them I followed this command echo 1 > /sys/class/fc_host/host1/issue_lip echo "- - -" > /sys/class/scsi_host/host<number>/scan nice now after that I tried to create a folder in / but it won't let...

7. Solaris

Empty ZFS SAN file system with high read I/O using MPXIO

I am researching the cause of an issue. The SAN file system /export/pools/zd-xxxxxxxxxxx is having a high amount of read traffic even though it is empty. It is ZFS with MPXIO. Any ideas? It's really strange considering the file system is empty, and I don't see any errors. cpu us sy...

8. AIX

IBM SAN TO SAN Mirroring

Has anyone tried SAN to SAN mirroring on IBM DS SAN Storage. DS5020 mentions Enhanced Remote Mirror to multi-LUN applications I wonder if Oracle High availibility can be setup using Remote Mirror option of SAN ?

9. Solaris

Warnings about read-only filesystems while installing a Solaris package

I have two test machines having solaris 10. I have shared a location which have a package on machine1 and mounted that location onto machine2 as below. machine1: share -F nfs -o rw /home1/pkg/test machine2: mount -F nfs -o rw machine2:/home1/pkg/test /tmp/test Now, when i am trying to...

10. Filesystems, Disks and Memory

Faster way: SAN hd to SAN hd copying

hi! i got a rhel 6.3 host that already have an xfs filesystem mounted from a SAN (let's call it SAN-1) whose size is 9TB. i will be receiving another SAN (let's call it SAN-2) storage of 15TB size. this new addition is physically on another SAN storage. SAN-1 is on a Pillar storage while the new...

LEARN ABOUT DEBIAN

all-swaps

all-swaps(7)						 Miscellaneous Information Manual					      all-swaps(7)

NAME

       all-swaps - event signalling that all swap partitions have been activated

SYNOPSIS

       all-swaps [ENV]...

DESCRIPTION

       The  all-swaps  event  is  generated  by the mountall(8) daemon after it has activated all swap partitions listed in fstab(5).  mountall(8)
       emits this event as an informational signal, services and tasks started or stopped by this event will do so in parallel with  other  activ-
       ity.

       When this event occurs, common filesystems such as /usr may not be mounted.

EXAMPLE

       A service that wishes to be running once swap partitions are activated might use:

	      start on all-swaps

SEE ALSO

       mounting(7) mounted(7) virtual-filesystems(7) local-filesystems(7) remote-filesystems(7) filesystem(7)

mountall							    2009-12-21							      all-swaps(7)

10 More Discussions You Might Find Interesting

1. Filesystems, Disks and Memory

ext3 filesystem

Discussion started by: comadreja

2. Filesystems, Disks and Memory

ReiserFS vs ext3 vs anything else?

Discussion started by: fishsponge

3. UNIX for Dummies Questions & Answers

/ext2 and /ext3

Discussion started by: vasikaran

4. Solaris

Thoughts/experiences of SAN attaching V880 to EMC SAN

Discussion started by: si_linux