Kernel => 2.6.13 (dm-snapshot-bio_list-fix.patch patched)<br>
<br>
lvm version =><br>
LVM version: 2.02.01 (2005-11-23)<br>
Library version: 1.02.02 (2005-12-02)<br>
Driver version: 4.4.0<br>
<br>
-bash-3.00# lvcreate -s -L3000 -n test2_1 /dev/VG01/test2<br>
Rounding up size to full physical extent 2.94 GB<br>
Logical volume "test2_1" created<br>
-bash-3.00# lvcreate -s -L 3000 -n test2_2 /dev/VG01/test2<br>
Rounding up size to full physical extent 2.94 GB<br>
Logical volume "test2_2" created<br>
-bash-3.00# lvcreate -s -L 3000 -n test2_3 /dev/VG01/test2<br>
Rounding up size to full physical extent 2.94 GB<br>
Logical volume "test2_3" created<br>
<br>
<br>lvs --segment -v<br>
----------------------------------------------------------<br>
Finding all logical volumes<br>
/dev/VG01/test2_3: read failed after 0 of 4096 at 0: Input/output error<br>
LV
VG
Attr Start SSize #Str Type Stripe
Chunk<br>
lv1 VG01 -wi-ao
0 256.00M 1 linear
0 0<br>
lv2 VG01 -wi-ao
0 1.00G 1
linear 0 0<br>
lv3 VG01 -wi-a-
0 64.00M 1 linear
0 0<br>
lv4 VG01 -wi-ao
0 512.00M 1 linear
0 0<br>
lv5 VG01 -wi-ao 0
128.00M 1 linear
0 0<br>
test2 VG01owi-ao 0
29.31G 1 linear
0 0<br>
test2_1 VG01 swi-a- 0
2.94G 1 linear 0 8.00K<br>
test2_2 VG01 swi-a- 0
2.94G 1 linear 0 8.00K<br>
test2_3 VG01 Swi-I- 0
2.94G 1 linear 0 8.00K<br>
<br>
<br>
-bash-3.00# lvs -a<br>
/dev/VG01/test2_3: read failed after 0 of 4096 at 0: Inpu/output error<br>
LV
VG Attr LSize
Origin Snap% Move Log Copy%<br>
lv1 VG01 -wi-ao 256.00M<br>
lv2 VG01 -wi-ao 1.00G<br>
lv3 VG01 -wi-a- 64.00M<br>
lv4 VG01 -wi-ao 512.00M<br>
lv5 VG01 -wi-ao 128.00M<br>
test2 VG01 owi-ao 29.31G<br>
test2_1 VG01 swi-a- 2.94G test2 30.00<br>
test2_2 VG01 swi-a- 2.94G test2 29.99<br>
test2_3 VG01 Swi-I- 2.94G test2 100.00<br>
<br> lvscan<br>
----------------------------------------------------------<br>
/dev/VG01/test2_3: read failed after 0 of 4096 at 0: Input/output error<br>
ACTIVE
'/dev/VG01/lv1' [256.00 MB] inherit<br>
ACTIVE '/dev/VG01/lv2' [1.00 GB] inherit<br>
ACTIVE '/dev/VG01/lv3' [64.00 MB] inherit<br>
ACTIVE
'/dev/VG01/lv4' [512.00 MB] inherit<br>
ACTIVE '/dev/VG01lv5' [128.00 MB] inherit<br>
ACTIVE Original '/dev/VG01/test2' [29.31 GB] inherit<br>
ACTIVE Snapshot '/dev/VG01/test2_1' [2.94 GB] inherit<br>
ACTIVE Snapshot '/dev/VG01/test2_2' [2.94 GB] inherit<br>
ACTIVE Snapshot '/dev/VG01/test2_3' [2.94 GB] inherit<br> <br>
dmesg after created<br>
----------------------------------------------------------<br>attempt to access beyond end of device<br>
dm-11: rw=17, want=2271285024, limit=6160384<br>
device-mapper: Error reading/writing snapshot<br>
device-mapper: snapshot is marked invalid<br>
<br>
dmesg after tried to mount <br>
----------------------------------------------------------<br>
printk: 1 messages suppressed.<br>
Buffer I/O error on device dm-12, logical block 0<br>
Buffer I/O error on device dm-12, logical block 1<br>
Buffer I/O error on device dm-12, logical block 2<br>
Buffer I/O error on device dm-12, logical block 3<br>
Buffer I/O error on device dm-12, logical block 4<br>
Buffer I/O error on device dm-12, logical block 5<br>
Buffer I/O error on device dm-12, logical block 6<br>
Buffer I/O error on device dm-12, logical block 7<br>
Buffer I/O error on device dm-12, logical block 0<br>
Buffer I/O error on device dm-12, logical block 8<br>
FAT: Unrecognized mount option "nouuid" or missing value<br>
<br>
<br>
I create snapshot while test2 is busy. (I/O origin volume)<br>
but even I stopped writing data (already got error), sometime it still happen. 1 out of 3<br>
-bash-3.00# lvs -a<br>
/dev/VG01/test2_4: read failed after 0 of 4096 at 0: Input/output error<br>
/dev/VG01/test2_7: read failed after 0 of 4096 at 0: Input/output error<br>
/dev/VG01/test2_10: read failed after 0 of 4096 at 0: Input/output error<br>
lv1 VG01 -wi-ao 256.00M<br>
lv2 VG01 -wi-ao 1.00G<br>
lv3 VG01 -wi-a- 64.00M<br>
lv4 VG01 -wi-ao 512.00M<br>
lv5 VG01 -wi-ao 128.00M<br>
test2 VG01 owi-ao 29.31G<br>
test2_1 VG01 swi-a- 2.94G test2 38.28<br>
test2_10 VG01 Swi-I- 2.94G test2 100.00<br>
test2_2 VG01 swi-a- 2.94G test2 38.27<br>
test2_3 VG01 swi-a- 2.94G test2 0.01<br>
test2_4 VG01 Swi-I- 2.94G test2 100.00<br>
test2_5 VG01 swi-a- 2.94G test2 0.00<br>
test2_6 VG01 swi-a- 2.94G test2 0.00<br>
test2_7 VG01 Swi-I- 2.94G test2 100.00<br>
test2_8 VG01 swi-a- 2.94G test2 0.00<br>
test2_9 VG01 swi-a- 2.94G test2 0.00<br>
<br>
Rocky<br>