Gitweb: https://sourceware.org/git/?p=lvm2.git;a=commitdiff;h=3e5e7fd6c93517278b2451... Commit: 3e5e7fd6c93517278b2451a08f47e16d052babbb Parent: aae2e872b4572ba72fa0321391f7eb77f569e5ff Author: David Teigland teigland@redhat.com AuthorDate: Tue Sep 10 09:47:33 2019 -0500 Committer: David Teigland teigland@redhat.com CommitterDate: Tue Sep 10 09:47:33 2019 -0500
pvscan: allow use of noudevsync option
When pvscan is used to activate a VG via an asynchronous service (i.e. lvm2-pvscan), there is no requirement that the command wait for udev to create device nodes before returning.
It's possible that waiting for udev is slow enough to cause the service running the command to time out. So, allow the --noudevsync option to be given to pvscan to skip waiting for udev.
(This commit is not changing the lvm2-pvscan service itself to use --noudevsync.)
Still unknown is whether there are any complex LV activation cases in which lvm itself requires access to a device node, in which case the udev wait could be needed by lvm itself.
(When running an activation command directly from the command line, it's generally expected that the activated LVs are ready to use when the command is finished, so lvm waits for udev to finish creating the dev nodes.) --- tools/command-lines.in | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/tools/command-lines.in b/tools/command-lines.in index 1169224..65221c0 100644 --- a/tools/command-lines.in +++ b/tools/command-lines.in @@ -1498,7 +1498,7 @@ DESC: Display PV information.
pvscan --cache_long OO: --ignorelockingfailure, --reportformat ReportFmt, ---activate ay, --major Number, --minor Number +--activate ay, --major Number, --minor Number, --noudevsync OP: PV|String ... IO: --background ID: pvscan_cache
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