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lvm2/lib/device
David Teigland aecf542126 metadata: prevent writing beyond metadata area
lvm uses a bcache block size of 128K.  A bcache block
at the end of the metadata area will overlap the PEs
from which LVs are allocated.  How much depends on
alignments.  When lvm reads and writes one of these
bcache blocks to update VG metadata, it can also be
reading and writing PEs that belong to an LV.

If these overlapping PEs are being written to by the
LV user (e.g. filesystem) at the same time that lvm
is modifying VG metadata in the overlapping bcache
block, then the user's updates to the PEs can be lost.

This patch is a quick hack to prevent lvm from writing
past the end of the metadata area.
2018-10-29 16:53:17 -05:00
..
bcache-utils.c build: Don't generate symlinks in include/ dir 2018-05-14 10:30:20 +01:00
bcache.c metadata: prevent writing beyond metadata area 2018-10-29 16:53:17 -05:00
bcache.h metadata: prevent writing beyond metadata area 2018-10-29 16:53:17 -05:00
dev-cache.c cov: drop uneeded header files 2018-10-15 17:49:44 +02:00
dev-cache.h Remove code for using files as devices 2018-06-21 09:33:21 -05:00
dev-dasd.c build: Don't generate symlinks in include/ dir 2018-05-14 10:30:20 +01:00
dev-ext-udev-constants.h dev-type: check for DEVLINKS udev db variable existence if udev_device_get_is_initialized fn is not present 2016-09-06 13:21:29 +02:00
dev-ext.c build: Don't generate symlinks in include/ dir 2018-05-14 10:30:20 +01:00
dev-io.c cov: drop uneeded header files 2018-10-15 17:49:44 +02:00
dev-luks.c build: Don't generate symlinks in include/ dir 2018-05-14 10:30:20 +01:00
dev-lvm1-pool.c build: Don't generate symlinks in include/ dir 2018-05-14 10:30:20 +01:00
dev-md.c scan: use full md filter when md 1.0 devices are present 2018-06-15 12:21:25 -05:00
dev-swap.c build: Don't generate symlinks in include/ dir 2018-05-14 10:30:20 +01:00
dev-type.c device_mapper: remove dbg_malloc. 2018-06-08 13:40:53 +01:00
dev-type.h scan: use full md filter when md 1.0 devices are present 2018-06-15 12:21:25 -05:00
device-types.h devices: Recognise Veritas Dynamic Multipathing 2017-01-10 22:23:23 +00:00
device.h scan: work around udev problems by avoiding open RDWR 2018-06-20 14:08:12 -05:00