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lvcreate: ensure striped raid region size is at least stripe size

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The kernel MD runtime requires region size to be larger than stripe size
on striped raid layouts, thus the dm-raid target's constructor rejects
such request.

This causes e.g. an 'lvcreate --type raid10 -i3 -I4096 -R2048 -n lv vg' to fail.

Avoid failing late in the kernel by enforcing region size to be
larger or equal to stripe size.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1698225
This commit is contained in:
Heinz Mauelshagen 2019-11-26 22:17:34 +01:00
parent 2037476008
commit 29db9c6325
2 changed files with 8 additions and 0 deletions
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1
WHATS_NEW
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@ -1,5 +1,6 @@
Version 2.03.07 -
===================================
Ensure minimum required region size on striped RaidLV creation.
Fix resize of thin-pool with data and metadata of different segtype.
Improve mirror type leg splitting.
Fix activation order when removing merged snapshot.

7
tools/lvcreate.c
View File

@ -575,6 +575,13 @@ static int _read_raid_params(struct cmd_context *cmd,
log_error("Minimum recovery rate cannot be higher than maximum.");
return 0;
}
if (lp->region_size < lp->stripe_size) {
log_print_unless_silent("Adjusting %s %s region size to required minimum of stripe size %s.",
lp->segtype->name, display_size(cmd, (uint64_t)lp->region_size),
display_size(cmd, (uint64_t)lp->stripe_size));
lp->region_size = lp->stripe_size;
}
}
return 1;