1. add it instead of BUG_ON
we should print error if warn is assigned to true
2. correct use of read_pagemap_page_from_parent, provide warn = true
Signed-off-by: Tikhomirov Pavel <snorcht@gmail.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
These processes don't have image files in a parent snapshot and crtools
should not fail in this case.
https://bugzilla.openvz.org/show_bug.cgi?id=2636
v2: return NULL from mem_snap_init, if a parent image is absent.
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Otherwise it contains trash and BUG at page-read.c:98 may be triggered.
https://bugzilla.openvz.org/show_bug.cgi?id=2633
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Use the format specifier PRIx64 instead of %lx to print an off_t integer.
Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This one is a little bit more tricky that dump. On restore we
should open the chain of pagemap-s (by "parent" links). Then for
every pagemap with in_parent set we should go to parent and ask
for the page. Parent, in turn, should properly determine where
the respective page is in his pagemap and position the page.img's
position respectively.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Now we have 2 forms of storing pages -- legacy pages.img and
new pagemap + pages image. We'll have one more (ovz) and the
pagemap + pages will be stacked (snapshot restore). Thus it's
handy to have this as an page-reader object.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
