Hi Prashanth, My company did a lot of LVM+XFS vs. SVM+UFS testing in addition to ZFS. Overall, LVM's overhead is abysmal. We witnessed performance hits of 50%+. SVM only reduced performance by about 15%. ZFS was similar, though a tad higher.
Also, my understanding is you can't write to a ZFS snapshot...unless you clone it. Perhaps, someone who knows more than I can clarify. Best Regards, Jason On 1/23/07, Prashanth Radhakrishnan <[EMAIL PROTECTED]> wrote:
> > Is there someway to synchronously mount a ZFS filesystem? > > '-o sync' does not appear to be honoured. > > No there isn't. Why do you think it is necessary? Specifically, I was trying to compare ZFS snapshots with LVM snapshots on Linux. One of the tests does writes to an ext3FS (that's on top of an LVM snapshot) mounted synchronously, in order to measure the real Copy-on-write overhead. So, I was wondering if I could do the same with ZFS. Seems not. Thanks. _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
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