We've just made a new development release of LVM2 with a few new features we'd like people to test. ftp://sources.redhat.com/pub/lvm2/LVM2.2.02.31.tgz (Current stable release is 2.02.28) ftp://sources.redhat.com/pub/dm/device-mapper.1.02.24.tgz (considered stable in its default configuration) 1. Setting readahead is now supported. Use --readahead with lvchange or lvcreate. -r, --readahead ReadAheadSectors|auto|none Set read ahead sector count of this logical volume. For volume groups with metadata in lvm1 format, this must be a value between 2 and 120 sectors. The default value is "auto" which allows the kernel to choose a suitable value automatically. "None" is equivalent to specifying zero. We're particularly interested in comparisons between 'auto' and 'none' with different configurations. 2. vgsplit now lets you split off PVs into a new VG, and accepts vgcreate command line options to set properties of that VG. [a few known bugs in the validation still to fix here] 3. If you enable dmeventd (configure '--enable-dmeventd' on both packages) it can now monitor snapshots and report to syslog if they are getting full. [further enhancements to this are planned] 4. The --resizefs argument to lvresize/lvextend/lvreduce now calls out to a new script, fsadm, which attempts to resize the filesystem in conjunction with the LV. [further enhancements to this are planned - only some cases supported so far, and we want fsadm to become a new commandline entry point too, like e2fsadm used to be in LVM1 - it isn't yet] 5. pvs --segments will now also display LV segment fields so you can see what is layered on each PV segment. 6. lvconvert now supports additional mirror reconfigurations (similar to the way pvmove works). E.g. convert from -m1 to -m2. Alasdair -- agk@redhat.com _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
