Red Hat Bugzilla – Bug 1463705
RAID RESHAPE: enable on in-use LVs
Last modified: 2018-04-10 11:21:33 EDT
We disabled reshaping of in-use RaidLVs in RHEL7.4 as of bz1447812 because of a potential data corruption on reshaping striped RAIDs.
This bz tracks enabling it again once the deadlock fix is in.
... but the increased functionality is scheduled for 7.5 and is not a testblocker.
Heinz, is the deadlock fix mentioned in Comment 3 in? Should this be reenabled and tested?
(In reply to Marian Csontos from comment #7)
> Heinz, is the deadlock fix mentioned in Comment 3 in? Should this be
> reenabled and tested?
LVM2 enabled reshaping of in-use LV again with
Verified that online in-use reshape/takeover is again enabled in the latest lvm rpms.
lvm2-2.02.176-4.el7 BUILT: Wed Nov 15 04:21:19 CST 2017
That said the following 7.4 issues are again back as 7.5 regressions.
bug 1514539 kernel Deadlock in reshape on single core machine
bug 1514500 kernel RAID TAKEOVER: "divide error" panic during raid0_meta -> raid10 attempt
bug 1514215 lvm2 RAID RESHAPE: potential for data corruption when adding striped raid images to offline volumes
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.