14 Commits

Author	SHA1	Message	Date
Zdenek Kabelac	fcbef05aae	doc: change fsf address ... Hmm rpmlint suggest fsf is using a different address these days, so lets keep it up-to-date	2016-01-21 12:11:37 +01:00
Jonathan Brassow	2e0740f7ef	RAID: Add writemostly/writebehind support for RAID1 ... 'lvchange' is used to alter a RAID 1 logical volume's write-mostly and write-behind characteristics. The '--writemostly' parameter takes a PV as an argument with an optional trailing character to specify whether to set ('y'), unset ('n'), or toggle ('t') the value. If no trailing character is given, it will set the flag. Synopsis: lvchange [--writemostly <PV>:{t|y|n}] [--writebehind <count>] vg/lv Example: lvchange --writemostly /dev/sdb1:y --writebehind 512 vg/raid1_lv The last character in the 'lv_attr' field is used to show whether a device has the WriteMostly flag set. It is signified with a 'w'. If the device has failed, the 'p'artial flag has priority. Example ("nosync" raid1 with mismatch_cnt and writemostly): [~]# lvs -a --segment vg LV VG Attr #Str Type SSize raid1 vg Rwi---r-m 2 raid1 500.00m [raid1_rimage_0] vg Iwi---r-- 1 linear 500.00m [raid1_rimage_1] vg Iwi---r-w 1 linear 500.00m [raid1_rmeta_0] vg ewi---r-- 1 linear 4.00m [raid1_rmeta_1] vg ewi---r-- 1 linear 4.00m Example (raid1 with mismatch_cnt, writemostly - but failed drive): [~]# lvs -a --segment vg LV VG Attr #Str Type SSize raid1 vg rwi---r-p 2 raid1 500.00m [raid1_rimage_0] vg Iwi---r-- 1 linear 500.00m [raid1_rimage_1] vg Iwi---r-p 1 linear 500.00m [raid1_rmeta_0] vg ewi---r-- 1 linear 4.00m [raid1_rmeta_1] vg ewi---r-p 1 linear 4.00m A new reportable field has been added for writebehind as well. If write-behind has not been set or the LV is not RAID1, the field will be blank. Example (writebehind is set): [~]# lvs -a -o name,attr,writebehind vg LV Attr WBehind lv rwi-a-r-- 512 [lv_rimage_0] iwi-aor-w [lv_rimage_1] iwi-aor-- [lv_rmeta_0] ewi-aor-- [lv_rmeta_1] ewi-aor-- Example (writebehind is not set): [~]# lvs -a -o name,attr,writebehind vg LV Attr WBehind lv rwi-a-r-- [lv_rimage_0] iwi-aor-w [lv_rimage_1] iwi-aor-- [lv_rmeta_0] ewi-aor-- [lv_rmeta_1] ewi-aor--	2013-04-15 13:59:46 -05:00
Jonathan Earl Brassow	68d84fa3eb	Add a couple new functions to gdbinit file and decode a couple lv->status flags ... New functions: - seg_pvs: Print a list of PVs in a seg_pvs list - pv_dev_name: print name of a PV	2012-04-10 23:24:00 +00:00
Jonathan Earl Brassow	9aedb1431f	New handy gdb debugging function, "dm_list_size" ... Example: (gdb) dm_list_size &split_images 1 list items	2011-09-28 16:32:22 +00:00
Jonathan Earl Brassow	08c50a291e	reorder some status flag printing in gdbinit file.	2011-09-13 13:57:02 +00:00
Jonathan Earl Brassow	4c259ae945	Adjust gdbinit script to new RAID status flag values.	2011-09-08 22:19:45 +00:00
Jonathan Earl Brassow	673c8d01e6	Updates to gdbinit file ... 1) Add more status flags for printing 2) Fix bug in lv_status_r processing for mirror segment type	2011-09-01 21:01:12 +00:00
Jonathan Earl Brassow	075658c066	RAID updates for gdbinit file	2011-07-01 16:15:25 +00:00
Jonathan Earl Brassow	2d1175a895	gdbinit update ... When doing lv_status_r on a sub_lv, do not climb the tree up past the starting point.	2011-03-29 12:53:13 +00:00
Jonathan Earl Brassow	547d3f13ab	Watch out for collisions in GDB global namespace. ... Better 'lv_status_r' printing.	2011-03-14 18:05:56 +00:00
Jonathan Earl Brassow	0b1a79bf1f	lv_status_r now prints out status of attached log LVs ... (Print layout could be nicer... :(	2011-03-11 22:25:36 +00:00
Jonathan Earl Brassow	ab999c86cc	lv_status_r has been fixed-up so that it supports infinite LV stacking ... (It does not yet follow 'log_lv' or 'origin' links.)	2011-03-11 22:16:38 +00:00
Jonathan Earl Brassow	1e094d3428	detect RAID* LV and segment flags.	2011-03-11 18:22:39 +00:00
Jonathan Earl Brassow	0a1d29b1d3	gdbinit - A GDB init file to help while debugging LVM. ... Copy this file as '.gdbinit' to your home directory or your working directory. It adds the following commands to gdb: - first_seg - lv_status - lv_status_r - lv_is_mirrored - seg_item - seg_status - segs_using_this_lv You can get a list of these user-defined commands by typing: (gdb) help user-defined You can get more information on each command by typing: (gdb) help <command>	2011-03-10 13:45:12 +00:00