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authorMike Snitzer <snitzer@redhat.com>2015-10-09 00:05:41 +0200
committerMike Snitzer <snitzer@redhat.com>2015-10-09 22:57:03 +0200
commitb0d3cc011e532d8c9db76cf717bcafa53c135595 (patch)
treed74330dcf71a599d637a7eecad8b56cdbd4487b9 /samples
parentdm cache: fix NULL pointer when switching from cleaner policy (diff)
downloadlinux-b0d3cc011e532d8c9db76cf717bcafa53c135595.tar.xz
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dm snapshot: add new persistent store option to support overflow
Commit 76c44f6d80 introduced the possibly for "Overflow" to be reported by the snapshot device's status. Older userspace (e.g. lvm2) does not handle the "Overflow" status response. Fix this incompatibility by requiring newer userspace code, that can cope with "Overflow", request the persistent store with overflow support by using "PO" (Persistent with Overflow) for the snapshot store type. Reported-by: Zdenek Kabelac <zkabelac@redhat.com> Fixes: 76c44f6d80 ("dm snapshot: don't invalidate on-disk image on snapshot write overflow") Reviewed-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'samples')
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