David Teigland 79c4971210 label_scan: remove extra label scan and read for orphan PVs ... When process_each_pv() calls vg_read() on the orphan VG, the internal implementation was doing an unnecessary lvmcache_label_scan() and two unnecessary label_read() calls on each orphan. Some of those unnecessary label scans/reads would sometimes be skipped due to caching, but the code was always doing at least one unnecessary read on each orphan. The common format_text case was also unecessarily calling into the format-specific pv_read() function which actually did nothing. By analyzing each case in which vg_read() was being called on the orphan VG, we can say that all of the label scans/reads in vg_read_orphans are unnecessary: 1. reporting commands: the information saved in lvmcache by the original label scan can be reported. There is no advantage to repeating the label scan on the orphans a second time before reporting it. 2. pvcreate/vgcreate/vgextend: these all share a common implementation in pvcreate_each_device(). That function already rescans labels after acquiring the orphan VG lock, which ensures that the command is using valid lvmcache information.		2018-04-20 11:22:45 -05:00
..
archive.c	scan: use bcache for label scan and vg read	2018-04-20 11:19:24 -05:00
archiver.c	scan: use bcache for label scan and vg read	2018-04-20 11:19:24 -05:00
archiver.h	vgcfgrestore: use lvmetad disabled state	2016-06-20 11:19:49 -05:00
export.c	[io paths] Unpick agk's aio stuff	2018-04-20 11:03:58 -05:00
flags.c	replicator: remove the code	2017-10-13 16:20:42 -05:00
format-text.c	label_scan: remove extra label scan and read for orphan PVs	2018-04-20 11:22:45 -05:00
format-text.h	cov: declaration matching	2016-12-11 23:24:19 +01:00
import_vsn1.c	lvmetad: use new label_scan for update from pvscan	2018-04-20 11:22:43 -05:00
import-export.h	scan: use bcache for label scan and vg read	2018-04-20 11:19:24 -05:00
import.c	scan: use bcache for label scan and vg read	2018-04-20 11:19:24 -05:00
layout.h	scan: use bcache for label scan and vg read	2018-04-20 11:19:24 -05:00
text_export.h	coverity: fix possible resource leak of descendants_buffer in _print_historical_lv fn	2016-05-31 09:36:58 +02:00
text_import.h	doc: change fsf address	2016-01-21 12:11:37 +01:00
text_label.c	scan: use bcache for label scan and vg read	2018-04-20 11:19:24 -05:00