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From: "heming.zhao@suse.com" <heming.zhao@suse.com>
To: LVM general discussion and development <linux-lvm@redhat.com>
Cc: David Teigland <teigland@redhat.com>,
	Zdenek Kabelac <zkabelac@redhat.com>
Subject: [linux-lvm] (resend) may bug: lvconvert reports "Insufficient free space" when doing "--replace"
Date: Sun, 7 Nov 2021 16:08:38 +0800	[thread overview]
Message-ID: <f8a0b5c1-7b07-d119-5ce0-4fae51123ceb@suse.com> (raw)
In-Reply-To: <7a6dbcf6-a764-c71a-a1ee-357f48ad7ca3@suse.com>

(I sent this mail some days before, it looks this mail was blocked by anti-spam system. resend it)

Hello list,

I may found a bug, when lv is raid1, and each leg includes more than one PV.

When doing "lvconvert --replace" to replace one of the oldpv with a newpv,
It looks lvconvert requires full raid array size for a single newpv.

lvm version: 2.03.12, Reproducible steps:

```
# vgcreate vg1 /dev/sdg /dev/sdh
   Volume group "vg1" successfully created

# lvcreate -n lv1 -l 90%FREE vg1
   Logical volume "lv1" created.

# vgextend vg1 /dev/sdj /dev/sdk
   Physical volume "/dev/sdj" successfully created.
   Physical volume "/dev/sdk" successfully created.
   Volume group "vg1" successfully extended

# lvconvert --type raid1 vg1/lv1 /dev/sdg /dev/sdh /dev/sdj /dev/sdk
Are you sure you want to convert linear LV vg1/lv1 to raid1 type? [y/n]: y
   Logical volume vg1/lv1 successfully converted.

# lsblk
NAME               MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sdg                  8:96   0  200M  0 disk
└─vg1-lv1_rimage_0 254:4    0  352M  0 lvm
   └─vg1-lv1        254:2    0  352M  0 lvm
sdh                  8:112  0  200M  0 disk
├─vg1-lv1_rmeta_0  254:3    0    4M  0 lvm
│ └─vg1-lv1        254:2    0  352M  0 lvm
└─vg1-lv1_rimage_0 254:4    0  352M  0 lvm
   └─vg1-lv1        254:2    0  352M  0 lvm
sdi                  8:128  0  200M  0 disk
sdj                  8:144  0  200M  0 disk
├─vg1-lv1_rmeta_1  254:5    0    4M  0 lvm
│ └─vg1-lv1        254:2    0  352M  0 lvm
└─vg1-lv1_rimage_1 254:6    0  352M  0 lvm
   └─vg1-lv1        254:2    0  352M  0 lvm
sdk                  8:160  0  200M  0 disk
└─vg1-lv1_rimage_1 254:6    0  352M  0 lvm
   └─vg1-lv1        254:2    0  352M  0 lvm
sdl                  8:176  0  200M  0 disk

# vgextend vg1 /dev/sdi
   Volume group "vg1" successfully extended

# lvconvert --replace /dev/sdh vg1/lv1 /dev/sdi  (<=== failed, should succeed)
   Insufficient free space: 89 extents needed, but only 49 available
   LV vg1/lv1 in not partial.

# lvconvert --replace /dev/sdg vg1/lv1 /dev/sdi   (<=== failed, should succeed)
   Insufficient free space: 89 extents needed, but only 49 available
   LV vg1/lv1 in not partial.

# pvmove /dev/sdh /dev/sdi
   /dev/sdh: Moved: 2.50%
   /dev/sdh: Moved: 100.00%
```

pvmove is workable, but I think it's a work around.
lvconvert should run successfully with above cmds.

Thanks,
Heming


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  reply	other threads:[~2021-11-08  6:45 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-04 12:44 [linux-lvm] " heming.zhao
2021-11-07  8:08 ` heming.zhao [this message]
2021-11-18 18:18   ` [linux-lvm] (resend) " Heinz Mauelshagen
2021-11-22  7:52     ` heming.zhao

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