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Ext3 filesystems on san become read only

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Operating Systems Linux Red Hat Ext3 filesystems on san become read only
# 8  
Old 08-16-2014
Hi Mig28mx,

if you can confirm that the issue is present when the second PATH is active, probably your problem is the compatibility of linux native multipath with the storage system.

For example, if your Storage Array is a HighEnd ( EMC VMAX, HDS VSP, DS8000), normally, the multipath daemon is fully compatible with default settings.

However if you Storage is a midrage (EMC VNX, HDS HUS or AMS), you need write special settings inf the multipath.conf. You need review the notes about of this setting in the User Guide of the Storage Array.

If the issue continue, I think that you need review the SAN Switches in order to see if the error counters in the fibre ports are growing.

If you can share with me the model of switches and storage I can be more precise.
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LEARN ABOUT BSD

quotaoff

QUOTAON(8)						      System Manager's Manual							QUOTAON(8)

NAME

       quotaon, quotaoff - turn filesystem quotas on and off

SYNOPSIS

       quotaon [-v] filesystem ...
       quotaon [-v] -a
       quotaoff [-v] filesystem ...
       quotaoff [-v] -a

DESCRIPTION

       Quotaon	announces  to the system that disk quotas should be enabled on one or more filesystems.  Quotaoff announces to the system that the
       specified filesystems should have any disk quotas diskquotas turned off.  The filesystems specified must have entries in /etc/fstab and	be
       mounted.   Quotaon  expects  each  filesystem  to  have a quota file named quotas located at the root of the associated file system.  These
       defaults may be overridden in /etc/fstab.

       Available options:

       -a	      If the -a flag is supplied in place of any filesystem names, quotaon/quotaoff will enable/disable all the filesystems  indi-
		      cated in /etc/fstab to be read-write with disk quotas.

       -v	      Causes quotaon and quotaoff to print a message for each filesystem where quotas are turned on or off.

FILES

       quotas	      at the filesystem root with user quotas

       /etc/fstab     filesystem table

SEE ALSO

       quota(1), setquota(2), fstab(5), edquota(8), quotacheck(8), repquota(8)

HISTORY

       The quotaon command appeared in 4.2BSD.

4.2 Berkeley Distribution					 January 21, 1996							QUOTAON(8)