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| author | David S. Miller <davem@davemloft.net> | 2015-10-20 06:08:27 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-10-20 06:08:27 -0700 |
| commit | 26440c835f8b1a491e2704118ac55bf87334366c (patch) | |
| tree | 3c2d23b59fd49b252fdbf6c09efc41b354933fc6 /Documentation/device-mapper/snapshot.txt | |
| parent | 371f1c7e0d854796adc622cc3bacfcc5fc638db1 (diff) | |
| parent | 1099f86044111e9a7807f09523e42d4c9d0fb781 (diff) | |
| download | lwn-26440c835f8b1a491e2704118ac55bf87334366c.tar.gz lwn-26440c835f8b1a491e2704118ac55bf87334366c.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
drivers/net/usb/asix_common.c
net/ipv4/inet_connection_sock.c
net/switchdev/switchdev.c
In the inet_connection_sock.c case the request socket hashing scheme
is completely different in net-next.
The other two conflicts were overlapping changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/device-mapper/snapshot.txt')
| -rw-r--r-- | Documentation/device-mapper/snapshot.txt | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/Documentation/device-mapper/snapshot.txt b/Documentation/device-mapper/snapshot.txt index 0d5bc46dc167..ad6949bff2e3 100644 --- a/Documentation/device-mapper/snapshot.txt +++ b/Documentation/device-mapper/snapshot.txt @@ -41,9 +41,13 @@ useless and be disabled, returning errors. So it is important to monitor the amount of free space and expand the <COW device> before it fills up. <persistent?> is P (Persistent) or N (Not persistent - will not survive -after reboot). -The difference is that for transient snapshots less metadata must be -saved on disk - they can be kept in memory by the kernel. +after reboot). O (Overflow) can be added as a persistent store option +to allow userspace to advertise its support for seeing "Overflow" in the +snapshot status. So supported store types are "P", "PO" and "N". + +The difference between persistent and transient is with transient +snapshots less metadata must be saved on disk - they can be kept in +memory by the kernel. * snapshot-merge <origin> <COW device> <persistent> <chunksize> |