would anyone have suggestion as to what could cause errors such as (from dmesg)
Mar 9 22:18:00 uk1upvapmur060 genunix: [ID 457380 kern.notice] NOTICE: core_log: mx core dump failed, errno=30: /var/coreloc/core_uk1upvapmur060_mx_22815_1007_1362867480_16500
Mar 9 00:29:01 uk1upvapmur056 genunix: [ID 457380 kern.notice] NOTICE: core_log: mx core dump failed, errno=13: /var/coreloc/core_uk1upvapmur056_mx_22815_1007_1362788941_8941
the issue is that the target location is accessible. It can be read. there are some cores there.
any help or suggestion really appreciated.
According to intro(2):
30 EROFS Read-only file system
An attempt to modify a file or direc-
tory was made on a device mounted
13 EACCES Permission denied
An attempt was made to access a file
in a way forbidden by the protection
It looks to me as though /var/coreloc was a read-only file system at 22:18:00. The next error message indicates that something changed but it's still not writable. Perhaps there's an NFS file system mounted at /var/coreloc and it is not exported in such a way that it is writable by root.
You posted this question in the zones forum. Is there a reason that you suspect something specific to zones is to blame or were you just having problems finding the right forum?