Re: create lvm2 snapshot will take a long time while large IO on origin lv(till large IO ends)

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 4/28/2010 11:24 PM, Busby wrote:
> it seems the vgs suspend because the lvcreate cmd don't unlock the
> flock, but why the lvcreating of snapshot lv will be suspended while the
> origin is on big data IO?

Because when creating a snapshot it tries to flush any dirty buffers so
that the origin is in a consistent state at the time the snapshot is
created.  This is done to minimize the chance that the filesystem on the
snapshot will be corrupt.

--
dm-devel mailing list
dm-devel@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/dm-devel

[Index of Archives]     [DM Crypt]     [Fedora Desktop]     [ATA RAID]     [Fedora Marketing]     [Fedora Packaging]     [Fedora SELinux]     [Yosemite Discussion]     [KDE Users]     [Fedora Docs]

  Powered by Linux