Ayaz,
Ayaz Anjum wrote:
HI !
I have some concerns here, from my experience in the past, touching a
file ( doing some IO ) will cause the ufs filesystem to failover, unlike
zfs where it did not ! Why the behaviour of zfs different than ufs ? is
not this compromising data integrity ?
As others have explained, until a sync is done or unless the file is
opened to do 'sync writes', a write is not guaranteed to be on disk. If
the node fails before the disk commit, the data can be lost.
Applications are written with this in mind.
While ZFS and UFS do lots of things differently, the above applies to
both of them and to all POSIX filesystems in general.
Could you tell us more about how the UFS failover happened? Did you see
a UFS panic? Did the Sun Cluster disk path monitor cause the failover?
Regards,
Manoj
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