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Hello,
we've a server (web, ftp, cgi applications) with
this hardware:
Motherborad SuperMIcro P4DP6
Onboard ATI Technologies Inc Rage XL (rev 27)
(prog-if 00 [VGA])
ATI Technologies Inc Rage XL dual P4 Xeon 2.2 Ghz
4 Gbyte RAM
one controller: American Megatrends Inc. MegaRAID
(rev 02)
American Megatrends Inc. MegaRAID 475 Express 500 RAID Controller bios ver. 5.2 one controller: SCSI storage controller: Adaptec
AHA-3960D / AIC-7899A U160/m (rev 01)
Adaptec AHA-3960D U160/m onboard controller:
SCSI storage controller: Adaptec AIC-7899P U160/m
(rev 01)
Intel Ethernet Pro 100
We've LVM utility software vers. 1.0.5 installed on
2.4.18-10 Readhat Kernel (ver. 7.3, official kernel patched with LVM 1.0.5).
The Volume group hosting is so
configured:
--- Volume group ---
VG Name hosting VG Access read/write VG Status available/resizable VG # 2 MAX LV 255 Cur LV 3 Open LV 3 MAX LV Size 255.99 GB Max PV 255 Cur PV 3 Act PV 3 VG Size 34.24 GB PE Size 4 MB Total PE 17510 Alloc PE / Size 8744 / 34.16 GB Free PE / Size 0 / 0 GB VG UUID zsW0nX-g4jP-z1uw-dAEk-TZDP-dxVC-j1Llec --- Logical volume ---
LV Name /dev/home/lv VG Name home LV Write Access read/write LV Status available LV # 1 # open 1 LV Size 12 GB Current LE 3072 Allocated LE 3072 Stripes 2 Stripe size (KByte) 4 Allocation next free Read ahead sectors 120 Block device 58:5 --- Logical volume ---
LV Name /dev/hosting/lv VG Name hosting LV Write Access read/write LV Status available LV # 1 # open 1 LV Size 7.16 GB Current LE 1832 Allocated LE 1832 Stripes 2 Stripe size (KByte) 4 Allocation next free Read ahead sectors 120 Block device 58:8 --- Logical volume ---
LV Name /dev/hosting/lv0 VG Name hosting LV Write Access read/write LV Status available LV # 2 # open 1 LV Size 7 GB Current LE 1792 Allocated LE 1792 Stripes 2 Stripe size (KByte) 4 Allocation next free Read ahead sectors 120 Block device 58:9 --- Logical volume ---
LV Name /dev/hosting/lv1 VG Name hosting LV Write Access read/write LV Status available LV # 3 # open 1 LV Size 20 GB Current LE 5120 Allocated LE 5120 Stripes 2 Stripe size (KByte) 4 Allocation next free Read ahead sectors 120 Block device 58:10 --- Physical volumes ---
PV Name (#)
/dev/sdv1 (1)
PV Status available / allocatable Total PE / Free PE 4372 / 0 PV Name (#)
/dev/sdw1 (2)
PV Status available / allocatable Total PE / Free PE 4372 / 0 The device /dev/sdw1 is an logical array (raid 1)
on ami megaraid controller: this device is in degraded mode,
so we have add two scsi disk with raid software
(/dev/md12, one device on onboard controller
and the second on the external AIC 7899); i wolud
move the striped device /dev/sdw1 to
new /dev/md12.
I've add this device (/dev/md12)
to volume group hosting with "vgextend" utility.
Note that /dev/sdv1 and /dev/sdw1 are logical
striping of volume group hosting
In single mode, i've umounted all the logical
volume and i've make:
/sbin/pvmove -iv /dev/sdw1 /dev/md12
The process skipped some PE (I/o errors) but after
moved 91 PE from /dev/sdw1 the pvmove command
freezed; after a shutdown of a server i see on the
vg hosting that /dev/md12 has 91 PE allocated and i've
mounted on the file system apparently about no
errors
I see also that the PE is on lv
logical volume, so i make:
/sbin/pvmove -iv -n lv1 /dev/sdw1
/dev/md12
(I've tested several type of pvmove comand, but i
can't specify a ranges of PE with a logical volume striped).
About moved 90 PE the pvmove freezed; reboot the
server and /dev/md/12 ha allocated another 90 PE.
So go on, and after:
/sbin/pvmove -iv -n lv0 /dev/sdw1 /dev/md12 i've
moved 89 PE and freezed again:
is this another bug of pvmove utility?
Now, the vgdisplay -v hosting is this:
--- Volume group ---
VG Name hosting VG Access read/write VG Status available/resizable VG # 2 MAX LV 255 Cur LV 3 Open LV 3 MAX LV Size 255.99 GB Max PV 255 Cur PV 3 Act PV 3 VG Size 34.24 GB PE Size 4 MB Total PE 17510 Alloc PE / Size 8744 / 34.16 GB Free PE / Size 8766 / 34.24 GB VG UUID zsW0nX-g4jP-z1uw-dAEk-TZDP-dxVC-j1Llec --- Logical volume --- LV Name /dev/home/lv VG Name home LV Write Access read/write LV Status available LV # 1 # open 1 LV Size 12 GB Current LE 3072 Allocated LE 3072 Stripes 2 Stripe size (KByte) 4 Allocation next free Read ahead sectors 120 Block device 58:5 --- Logical volume ---
LV Name /dev/hosting/lv VG Name hosting LV Write Access read/write LV Status available LV # 1 # open 1 LV Size 7.16 GB Current LE 1832 Allocated LE 1832 Stripes 2 Stripe size (KByte) 4 Allocation next free Read ahead sectors 120 Block device 58:8 --- Logical volume ---
LV Name /dev/hosting/lv0 VG Name hosting LV Write Access read/write LV Status available LV # 2 # open 1 LV Size 7 GB Current LE 1792 Allocated LE 1792 Stripes 2 Stripe size (KByte) 4 Allocation next free Read ahead sectors 120 Block device 58:9 --- Logical volume ---
LV Name /dev/hosting/lv1 VG Name hosting LV Write Access read/write LV Status available LV # 3 # open 1 LV Size 20 GB Current LE 5120 Allocated LE 5120 Stripes 2 Stripe size (KByte) 4 Allocation next free Read ahead sectors 120 Block device 58:10 --- Physical volumes --- PV Name (#) /dev/md12 (3) PV Status available / allocatable Total PE / Free PE 8766 / 8499 PV Name (#)
/dev/sdv1 (1)
PV Status available / allocatable Total PE / Free PE 4372 / 0 PV Name (#)
/dev/sdw1 (2)
PV Status available / allocatable Total PE / Free PE 4372 / 267 /sbin/pvdisplay -v /dev/md12
In this mail is attached the pvdispay output of /dev/md12.
Now the server is up and apparently the data is integrity but i would safely move all the logical volume on /dev/md12 or into another device; how can i do this ? Thanks.
Best Regards. Davide Di Luzio
System Administrator
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ALICOM Group Tel:
+39-085-4406901 Fax: +39-085-4406927
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