On December 2, 2014 8:11:54 AM EST, Jan Engelhardt
On Tuesday 2014-12-02 14:03, Carlos E. R. wrote:
I think that xfs implement copy snapshots, to another device or partition.
Source?
He doesn't have one because he's mistaken. Xfs provides xfsfreeze (sp) that flushes all data / metadata to disk, then an underlying layer in the storage stack can instantiate a snapshot by either COW or clone. (LVM snapshots being an example of that.) After the snapshot is instantiated xfsfreeze -u is called to release the filesystem to do more work. I wrote the first xfstest implementation for testing xfsfreeze a decade ago so I'm (or was) very familiar with xfsfreeze. (At the time the kernel implementation was buggy and would corrupt open files at times iirc. I was using it and had to write the xfstest to get a reproduced. With that in hand the kernel team fixed it in short order.) Greg -- Sent from my Android phone with K-9 Mail. Please excuse my brevity. -- To unsubscribe, e-mail: opensuse-factory+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-factory+owner@opensuse.org