Re: LVM ext2 recovery [lingus @ 2011-02-15 15:59:46]

Tema: Re: LVM ext2 recovery
Autorius: lingus
Data: 2011-02-15 15:59:46
Gal gali smulkiau? Nes kiek suprantu losetup skirtas reguliarų failą 
(img ar iso) padaryti prieinamą kaip blokinį įrenginį, bet /dev/sda11 
jau ir taip toks:

# ls -al /dev/sda11
brw-r----- 1 root disk 8, 11 Feb 11 20:32 /dev/sda11

Kodėl ir kur reikia kurti particijas?

On 02/15/2011 03:33 PM, rabarbaras wrote:
> losetup - susikursi loopX irengini;
> kpartx - padarysi reikalingas particijas;
>
>
> On 02/15/11 15:24, lingus wrote:
>> O tai ką daryt su tuo /dev/sda11p1? Nes reealiai tai tokio failo nėra:
>>
>> # ls -al /dev/sda11p1
>> ls: /dev/sda11p1: No such file or directory
>>
>> # ls -al /dev/sda11*
>> brw-r----- 1 root disk 8, 11 Feb 11 20:32 /dev/sda11
>>
>> Šitas http://www.diskinternals.com/linux-recovery/ ties ~80% tampa not
>> responding, nors iki lūžimo rodo, kad rado ~20k folderių ir 0.5M failų
>> failų. Pasiūlyk kokį nors įrankį :)
>>
>> On 02/15/2011 02:41 PM, rabarbaras wrote:
>>> Duomenis turi. Ir gal but gerus
>>> /dev/sda11p1
>>>
>>> On 02/15/11 14:21, lingus wrote:
>>>> # /sbin/fdisk /dev/sda11
>>>>
>>>> The number of cylinders for this disk is set to 9137.
>>>> There is nothing wrong with that, but this is larger than 1024,
>>>> and could in certain setups cause problems with:
>>>> 1) software that runs at boot time (e.g., old versions of LILO)
>>>> 2) booting and partitioning software from other OSs
>>>> (e.g., DOS FDISK, OS/2 FDISK)
>>>>
>>>> Command (m for help): p
>>>>
>>>> Disk /dev/sda11: 75.1 GB, 75162576384 bytes
>>>> 255 heads, 63 sectors/track, 9137 cylinders
>>>> Units = cylinders of 16065 * 512 = 8225280 bytes
>>>>
>>>> Device Boot Start End Blocks Id System
>>>> /dev/sda11p1 * 1 9137 73392921 83 Linux
>>>>
>>>> # /sbin/fdisk /dev/sda11p1
>>>>
>>>> Unable to open /dev/sda11p1
>>>>
>>>> On 02/15/2011 01:21 PM, rabarbaras wrote:
>>>>> ka rodo fdisk -l /dev/sda11 ?
>>>>>
>>>>> On 02/15/11 12:30, lingus wrote:
>>>>>> Sveiki, nulėkė debian servas, su LVM, o po juo XEN virtualios
>>>>>> mašinos.
>>>>>> Turiu backupą su Norton Ghost, bet jis nesupportina LVM ir atkuria
>>>>>> kaip
>>>>>> paprastas particijas taigi gaunu:
>>>>>>
>>>>>> # /sbin/fdisk -l
>>>>>> Warning: omitting partitions after #15.
>>>>>> They will be deleted if you save this partition table.
>>>>>>
>>>>>> Disk /dev/sda: 250.0 GB, 250059350016 bytes
>>>>>> 255 heads, 63 sectors/track, 30401 cylinders
>>>>>> Units = cylinders of 16065 * 512 = 8225280 bytes
>>>>>>
>>>>>> Device Boot Start End Blocks Id System
>>>>>> /dev/sda1 * 1 122 979933+ 83 Linux
>>>>>> /dev/sda2 123 30401 243216067+ f W95 Ext'd (LBA)
>>>>>> /dev/sda5 123 960 6731203+ 83 Linux
>>>>>> /dev/sda6 961 4310 26908843+ 83 Linux
>>>>>> /dev/sda7 4311 12683 67256091 83 Linux
>>>>>> /dev/sda8 12684 13102 3365586 83 Linux
>>>>>> /dev/sda9 13103 16452 26908843+ 83 Linux
>>>>>> /dev/sda10 16453 18127 13454406 82 Linux swap / Solaris
>>>>>> /dev/sda11 18128 27265 73400953+ 83 Linux
>>>>>> /dev/sda12 27266 27527 2104483+ 83 Linux
>>>>>> /dev/sda13 27528 27658 1052226 83 Linux
>>>>>> /dev/sda14 27659 29617 15735636 83 Linux
>>>>>> /dev/sda15 29618 30270 5245191 83 Linux
>>>>>>
>>>>>> nuo 1 iki 10 yra sisteminės particijos var, home, tmp, usr, swap,
>>>>>> tereikėjo pa'editint GRUB, fstab ir sistema pakilo.
>>>>>>
>>>>>> /dev/vg00/root / ext3
>>>>>> /dev/vg00/var /var ext3
>>>>>> /dev/vg00/home /home ext3
>>>>>> /dev/vg00/tmp /tmp ext3
>>>>>> /dev/vg00/usr /usr ext3
>>>>>> --------------------
>>>>>> /dev/sda5 / ext3
>>>>>> /dev/sda6 /var ext3
>>>>>> /dev/sda7 /home ext3
>>>>>> /dev/sda8 /tmp ext3
>>>>>> /dev/sda9 /usr ext3
>>>>>>
>>>>>> Svarbiausiam man ši mašina:
>>>>>>
>>>>>> # cat /etc/xen/oracle
>>>>>> name = "oracle"
>>>>>> uuid = "cafff27f-362b-866f-53f7-1f3571fcb665"
>>>>>> maxmem = 1024
>>>>>> memory = 1024
>>>>>> vcpus = 2
>>>>>> bootloader = "/usr/bin/pygrub"
>>>>>> on_poweroff = "destroy"
>>>>>> on_reboot = "restart"
>>>>>> on_crash = "restart"
>>>>>> #vfb = [ "type=vnc,vncdisplay=1,vncpasswd=oracle" ]
>>>>>> vfb = [ ]
>>>>>> # fix the lagging mouse in VNC
>>>>>> #usbdevice = 'tablet'
>>>>>> disk = [ "phy:/dev/vg00/oracle.xen-disk,xvda,w",
>>>>>> "phy:/dev/vg00/oracle.xen-swap,xvdb,w" ]
>>>>>> vif = [ "mac=00:16:3e:2f:10:e3,bridge=xenbr0" ]
>>>>>>
>>>>>> # tail -20 /etc/lvm/archive/vg00_00010.vg:
>>>>>>
>>>>>> oracle.xen-disk {
>>>>>> id = "RwCJVW-ik57-PJNz-1uRD-k3Ik-xoqb-sQ06fu"
>>>>>> status = ["READ", "WRITE", "VISIBLE"]
>>>>>> segment_count = 1
>>>>>>
>>>>>> segment1 {
>>>>>> start_extent = 0
>>>>>> extent_count = 2240 # 70 Gigabytes
>>>>>>
>>>>>> type = "striped"
>>>>>> stripe_count = 1 # linear
>>>>>>
>>>>>> stripes = [
>>>>>> "pv0", 688
>>>>>> ]
>>>>>> }
>>>>>> }
>>>>>>
>>>>>> Pagal šitą sprendžiu, kad man reikalinga particija yra 70GB, taigi -
>>>>>> "/dev/sda11", tačiau:
>>>>>>
>>>>>> # mount -v -t ext2 /dev/sda11 /mnt/
>>>>>> mount: wrong fs type, bad option, bad superblock on /dev/sda11,
>>>>>> missing codepage or other error
>>>>>>
>>>>>> # dmesg | tail
>>>>>> hfs: unable to find HFS+ superblock
>>>>>> hfs: unable to find HFS+ superblock
>>>>>> hfs: unable to find HFS+ superblock
>>>>>> VFS: Can't find an ext2 filesystem on dev sda11.
>>>>>>
>>>>>> Bandysiu drožt tą particiją su ext2 recovery toolsais, šiuo metu
>>>>>> sukasi
>>>>>> http://www.diskinternals.com/linux-recovery/. Bet labiau norėtųsi
>>>>>> kaip
>>>>>> nors pakišti tą particiją XEN'ui vietoj naudotos LVM, kad jis
>>>>>> užsikrautų, gal užtektų ką nors gudraus parašyti čia?
>>>>>> disk = [ "phy:/dev/vg00/oracle.xen-disk,xvda,w", "phy:/dev
>>>>>> Gal eina nesudėtingai atgal surankioti LVM sistemą?
>>>>>> Gal koks geresnis toolsas recoverinimui yra?
>>>>>>
>>>>>> Labai laukiu pasiūlymų, Dėkui =]
>>>>
>>