mirror of
git://sourceware.org/git/lvm2.git
synced 2024-12-21 13:34:40 +03:00
LVM2 mirror repository
https://sourceware.org/lvm2/
dd0ee35378
cmirror uses the CPG library to pass messages around the cluster and maintain its bitmaps. When a cluster mirror starts-up, it must send the current state to any joining members - a checkpoint. When mirrors are large (or the region size is small), the bitmap size can exceed the message limit of the CPG library. When this happens, the CPG library returns CPG_ERR_TRY_AGAIN. (This is also a bug in CPG, since the message will never be successfully sent.) There is an outstanding bug (bug 682771) that is meant to lift this message length restriction in CPG, but for now we work around the issue by increasing the mirror region size. This limits the size of the bitmap and avoids any issues we would otherwise have around checkpointing. Since this issue only affects cluster mirrors, the region size adjustments are only made on cluster mirrors. This patch handles cluster mirror issues involving pvmove, lvconvert (from linear to mirror), and lvcreate. It also ensures that when users convert a VG from single-machine to clustered, any mirrors with too many regions (i.e. a bitmap that would be too large to properly checkpoint) are trapped. |
||
|---|---|---|
| autoconf | ||
| conf | ||
| daemons | ||
| doc | ||
| include | ||
| lib | ||
| libdaemon | ||
| libdm | ||
| liblvm | ||
| man | ||
| nix | ||
| old-tests | ||
| po | ||
| python | ||
| report-generators | ||
| reports | ||
| scripts | ||
| spec | ||
| test | ||
| tools | ||
| udev | ||
| unit-tests | ||
| .gitignore | ||
| acinclude.m4 | ||
| aclocal.m4 | ||
| configure | ||
| configure.in | ||
| COPYING | ||
| COPYING.LIB | ||
| INSTALL | ||
| make.tmpl.in | ||
| Makefile.in | ||
| README | ||
| VERSION | ||
| VERSION_DM | ||
| WHATS_NEW | ||
| WHATS_NEW_DM | ||
This tree contains the LVM2 and device-mapper tools and libraries. For more information about LVM2 read the changelog in the WHATS_NEW file. Installation instructions are in INSTALL. There is no warranty - see COPYING and COPYING.LIB. Tarballs are available from: ftp://sources.redhat.com/pub/lvm2/ The source code is stored in git: http://git.fedorahosted.org/git/lvm2.git git clone git://git.fedorahosted.org/git/lvm2.git Mailing list for general discussion related to LVM2: linux-lvm@redhat.com Subscribe from https://www.redhat.com/mailman/listinfo/linux-lvm Mailing lists for LVM2 development, patches and commits: lvm-devel@redhat.com Subscribe from https://www.redhat.com/mailman/listinfo/linux-lvm lvm2-commits@lists.fedorahosted.org (Read-only archive of commits) Subscribe from https://fedorahosted.org/mailman/listinfo/lvm2-commits Mailing list for device-mapper development, including kernel patches and multipath-tools: dm-devel@redhat.com Subscribe from https://www.redhat.com/mailman/listinfo/dm-devel The source code repository used until 7th June 2012 is accessible here: http://sources.redhat.com/cgi-bin/cvsweb.cgi/LVM2/?cvsroot=lvm2.