Baiklah, langsung saja kita lihat partisi default yang dibuat oleh Citrix XenServer saat instalasi pada single hardisk SATA 500GB. Perhatikan output dari perintah-perintah berikut ini.
[root@xenserver-master ~]# fdisk -l WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted. Disk /dev/sda: 500.1 GB, 500107862016 bytes 256 heads, 63 sectors/track, 60563 cylinders Units = cylinders of 16128 * 512 = 8257536 bytes Device Boot Start End Blocks Id System /dev/sda1 * 1 60564 488386583+ ee EFI GPT Disk /dev/sdb: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System Disk /dev/dm-0: 498.9 GB, 498999492608 bytes 255 heads, 63 sectors/track, 60666 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System [root@xenserver-master ~]# pvs PV VG Fmt Attr PSize PFree /dev/sda3 VG_XenStorage-e8fe919f-5899-6432-3429-f571180fc308 lvm2 a- 457,75G 457,75G [root@xenserver-master ~]# pvdisplay --- Physical volume --- PV Name /dev/sda3 VG Name VG_XenStorage-e8fe919f-5899-6432-3429-f571180fc308 PV Size 457,76 GB / not usable 9,12 MB Allocatable yes PE Size (KByte) 4096 Total PE 117184 Free PE 117183 Allocated PE 1 PV UUID F2aZeQ-JBql-Vrnb-t55F-nsYb-ExBn-Av92rK [root@xenserver-master ~]# vgdisplay --- Volume group --- VG Name VG_XenStorage-e8fe919f-5899-6432-3429-f571180fc308 System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 5 VG Access read/write VG Status resizable MAX LV 0 Cur LV 1 Open LV 0 Max PV 0 Cur PV 1 Act PV 1 VG Size 457,75 GB PE Size 4,00 MB Total PE 117184 Alloc PE / Size 1 / 4,00 MB Free PE / Size 117183 / 457,75 GB VG UUID Kz279D-np3Y-Zh7a-26j2-Mg63-N9dq-9JlnXl [root@xenserver-master ~]# lvdisplay --- Logical volume --- LV Name /dev/VG_XenStorage-e8fe919f-5899-6432-3429-f571180fc308/MGT VG Name VG_XenStorage-e8fe919f-5899-6432-3429-f571180fc308 LV UUID 1RQvRd-hchx-4hyq-aqXY-ZMPK-yTnY-fG6SVH LV Write Access read/write LV Status available # open 0 LV Size 4,00 MB Current LE 1 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 1024 Block device 252:1 [root@xenserver-master ~]# cat /proc/partitions major minor #blocks name 7 0 52378 loop0 8 0 488386584 sda 8 1 4193297 sda1 8 2 4193297 sda2 8 3 479996935 sda3 8 16 488386584 sdb 252 0 487304192 dm-0 252 1 4096 dm-1
Perhatikan bahwa XenServer membagi partisi menjadi 3, yaitu "/dev/sda1" dan "/dev/sda2" sebesar 4GB, dan "/dev/sda3" adalah sisanya yaitu sebesar 457,76 GB. Dan partisi "/dev/sda3" juga merupakan sebuah partisi yang bertipe LVM yang mempunyai Volume Group Name "VG_XenStorage-e8fe919f-5899-6432-3429-f571180fc308". VG ini memiliki kapasitas total yang dapat digunakan sebesar 457,75 GB. Dan VG ini telah berisi 1 buah partisi LV dengan nama "MGT" yang kapasitasnya sebesar 4 MB.
Sekali lagi saya ingatkan bahwa hardisk kedua dikenali sebagai "/dev/sdb" dan hardisk ini saya pasang di host setelah proses instalasi selesai dan kondisi host shutdown. Lihatlah dari perintah perintah terakhir diatas, ada 2 partisi yang di-mount sebagai dm-1 dan dm-0. Perhatikan kembali secara teliti bahwa dm-0 memiliki kapasitas sebesar 487304192 byte hampir mendekati kapasitas "/dev/sdb" yang sebesar 500 GB..
Selanjutnya kita akan melihat PBD, SR, VDI, VBD dan VM yang telah tersedia beserta keterkaitannya. Perhatikan output perintah-perintah berikut.
[root@xenserver-master ~]# xe vm-list uuid ( RO) : 20ee3e53-1487-4212-915a-3eab2582be4b name-label ( RW): Control domain on host: xenserver-master power-state ( RO): running [root@xenserver-master ~]# xe vbd-list [root@xenserver-master ~]# xe vdi-list uuid ( RO) : a0dbf564-c69b-4f81-ad51-371ea212116a name-label ( RW): XenCenter.iso name-description ( RW): sr-uuid ( RO): b58a4904-7c6d-e79d-7367-c0160e6bb77a virtual-size ( RO): 53635072 sharable ( RO): false read-only ( RO): true uuid ( RO) : 37e519cf-e31a-47bf-aabd-52c6feb43c1d name-label ( RW): xs-tools.iso name-description ( RW): sr-uuid ( RO): b58a4904-7c6d-e79d-7367-c0160e6bb77a virtual-size ( RO): 119197696 sharable ( RO): false read-only ( RO): true uuid ( RO) : 2dd1f27a-1755-423c-a331-0ac14c6030a5 name-label ( RW): SCSI 0:0:0:0 name-description ( RW): TSSTcorp model CDDVDW SH-S223C rev SB06 type 5 sr-uuid ( RO): e4d972a7-9a61-01b7-f0de-ab7b402ca8c8 virtual-size ( RO): 1073741312 sharable ( RO): false read-only ( RO): true [root@xenserver-master ~]# xe sr-list uuid ( RO) : e8fe919f-5899-6432-3429-f571180fc308 name-label ( RW): Local storage name-description ( RW): host ( RO): xenserver-master type ( RO): lvm content-type ( RO): user uuid ( RO) : bfebfb6b-6bfd-d96e-dc6a-90d6851ab2db name-label ( RW): Removable storage name-description ( RW): host ( RO): xenserver-master type ( RO): udev content-type ( RO): disk uuid ( RO) : b58a4904-7c6d-e79d-7367-c0160e6bb77a name-label ( RW): XenServer Tools name-description ( RW): XenServer Tools ISOs host ( RO): xenserver-master type ( RO): iso content-type ( RO): iso uuid ( RO) : e4d972a7-9a61-01b7-f0de-ab7b402ca8c8 name-label ( RW): DVD drives name-description ( RW): Physical DVD drives host ( RO): xenserver-master type ( RO): udev content-type ( RO): iso [root@xenserver-master ~]# xe pbd-list uuid ( RO) : 09104c2b-d933-0c6c-d7f8-a5292b685fae host-uuid ( RO): e8d62a67-23b6-4a27-b276-f4129e3bcf48 sr-uuid ( RO): bfebfb6b-6bfd-d96e-dc6a-90d6851ab2db device-config (MRO): location: /dev/xapi/block currently-attached ( RO): true uuid ( RO) : 00b9b1d4-aa1d-08da-2ed0-ae984c6dd5b7 host-uuid ( RO): e8d62a67-23b6-4a27-b276-f4129e3bcf48 sr-uuid ( RO): e4d972a7-9a61-01b7-f0de-ab7b402ca8c8 device-config (MRO): location: /dev/xapi/cd currently-attached ( RO): true uuid ( RO) : 7fc42cc2-9324-9447-1727-74b92b67a70c host-uuid ( RO): e8d62a67-23b6-4a27-b276-f4129e3bcf48 sr-uuid ( RO): e8fe919f-5899-6432-3429-f571180fc308 device-config (MRO): device: /dev/disk/by-id/scsi-SATA_WDC_WD5001AALS-_WD-WMAYP0061640-part3 currently-attached ( RO): true uuid ( RO) : 0320a7e9-035d-3140-ff0f-db1d7a7bd4a1 host-uuid ( RO): e8d62a67-23b6-4a27-b276-f4129e3bcf48 sr-uuid ( RO): b58a4904-7c6d-e79d-7367-c0160e6bb77a device-config (MRO): location: /opt/xensource/packages/iso; legacy_mode: true currently-attached ( RO): true
"xe vm-list" menunjukkan hanya ada 1 VM yaitu Domain 0 atau Control Domain, sebuah VM yang memiliki privillege khusus dan fungsi-fungsi lainnya, seperti yang telah kita singgung pada tutorial sebelumnya. Perintah selanjutnya menunjukkan tidak ada satupun VBD yang telah dibuat, karena memang belum ada satupun VM yang di-create. Perintah ke tiga menunjukkan sudah ada 4 VDI yang dibuat secara default, yaitu 1 VDI merepresentasikan keberadaan CD Image dengan format ISO seperti yang telah kita bahas di tutorial sebelumnya, 1 VDI lagi merepresentasikan keberadaan DVD drive pada host XenServer, 1 VDI lagi merepresentasikan keberadaan Port-port USB pada host, yang biasa dikenal dengan Removable Storage, dan yang terakhir adalah 1 VDI yang merepresentasikan keberadaan "/dev/sda3" sebagai partisi LVM. Semuanya persis seperti yang telah kita bahas pada tutorial sebelumnya. Silahkan membaca kembali tutorial sebelumnya untuk keterangan lebih detail disini. Perintah ke empat menunjukkan daftar SR yang ada, lagi-lagi sama seperti tutorial sebelumny ada 4 SR default yaitu :
- 1 SR berjenis LVM, sebagai informasi keberadaan partisi LVM dari "/dev/sda3".
- 2 SR berjenis udev, yang satu untuk Removable Storage (Port USB) dan yang satunya untuk DVD drive.
- 1 SR berjenis ISO, sebagai informasi keberadaan file ISO, telah disebutkan diatas.
- PBD pertama dengan uuid = 09104c2b-d933-0c6c-d7f8-a5292b685fae, mengandung informasi bahwa SR dengan label "Removable Storage" memiliki lokasi di "/dev/xapi/block" pada host.
- PBD kedua dengan uuid = 00b9b1d4-aa1d-08da-2ed0-ae984c6dd5b7, mengandung informasi bahwa SR dengan label "DVD Drives" memiliki lokasi di "/dev/xapi/cd" pada host.
- PBD ketiga dengan uuid = 7fc42cc2-9324-9447-1727-74b92b67a70c, mengandung informasi bahwa SR dengan label "Local Storage" adalah sebuah device yang dikenal sebagai "/dev/disk/by-id/scsi-SATA_WDC_WD5001AALS-_WD-WMAYP0061640-part3".
- PBD keempat dengan uuid = 0320a7e9-035d-3140-ff0f-db1d7a7bd4a1, mengandung informasi bahwa SR dengan label "XenServers Tools", file-file ISO nya berada di "/opt/xensource/packages/iso" pada host.
Sampai disini kita telah selesai. Selanjutnya adalah membuat VM yang baru, namun sebelumnya kita akan menjadikan hardisk "/dev/sdb" sebagai local storage yang baru untuk menjadi Backup Storage. Untuk itu kita akan menambahkannya sebagai SR yang baru dengan tipe LVM. Gunakan perintah berikut ini.
[root@xenserver-master ~]# fdisk -l WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted. Disk /dev/sda: 500.1 GB, 500107862016 bytes 256 heads, 63 sectors/track, 60563 cylinders Units = cylinders of 16128 * 512 = 8257536 bytes Device Boot Start End Blocks Id System /dev/sda1 * 1 60564 488386583+ ee EFI GPT Disk /dev/sdb: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System Disk /dev/dm-0: 498.9 GB, 498999492608 bytes 255 heads, 63 sectors/track, 60666 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System [root@xenserver-master ~]# xe host-list uuid ( RO) : e8d62a67-23b6-4a27-b276-f4129e3bcf48 name-label ( RW): xenserver-master name-description ( RW): Default install of XenServer [root@xenserver-master ~]# xe sr-create host-uuid=e8d62a67-23b6-4a27-b276-f4129e3bcf48 content-type=user name-label="Backup Storage" shared=false device-config:device=/dev/sdb type=lvm The SR operation cannot be performed because a device underlying the SR is in use by the host.
Uuupss..,ternyata hardisk "sdb" tidak bisa ditambahkan ke dalam SR sebagai local storage bertipe LVM. Ternyata operasi diatas memunculkan pesan "The SR operation cannot be performed because a device underlying the SR is in use by the host.". Apakah yang terjadi ?. Perhatikan output perintah berikut ini.
[root@xenserver-master ~]# cat /proc/partitions major minor #blocks name 7 0 52378 loop0 8 0 488386584 sda 8 1 4193297 sda1 8 2 4193297 sda2 8 3 479996935 sda3 8 16 488386584 sdb 252 0 487304192 dm-0 252 1 4096 dm-1
Baiklah, saya akan menggunakan perintah yang kedua. Perhatikan perintah berikut ini.
[root@xenserver-master ~]# xe sr-create host-uuid=e8d62a67-23b6-4a27-b276-f4129e3bcf48 content-type=user name-label="Backup Storage" shared=false device-config:device=/dev/dm-0 type=lvm 05412087-5870-d6c0-0423-8e8f625efa20 [root@xenserver-master ~]# xe sr-list uuid ( RO) : e8fe919f-5899-6432-3429-f571180fc308 name-label ( RW): Local storage name-description ( RW): host ( RO): xenserver-master type ( RO): lvm content-type ( RO): user uuid ( RO) : bfebfb6b-6bfd-d96e-dc6a-90d6851ab2db name-label ( RW): Removable storage name-description ( RW): host ( RO): xenserver-master type ( RO): udev content-type ( RO): disk uuid ( RO) : b58a4904-7c6d-e79d-7367-c0160e6bb77a name-label ( RW): XenServer Tools name-description ( RW): XenServer Tools ISOs host ( RO): xenserver-master type ( RO): iso content-type ( RO): iso uuid ( RO) : 05412087-5870-d6c0-0423-8e8f625efa20 name-label ( RW): Backup Storage name-description ( RW): host ( RO): xenserver-master type ( RO): lvm content-type ( RO): user uuid ( RO) : e4d972a7-9a61-01b7-f0de-ab7b402ca8c8 name-label ( RW): DVD drives name-description ( RW): Physical DVD drives host ( RO): xenserver-master type ( RO): udev content-type ( RO): iso [root@xenserver-master ~]# pvs PV VG Fmt Attr PSize PFree /dev/mapper/ddf1_4c5349202020202080862925000000004711471100001450 VG_XenStorage-05412087-5870-d6c0-0423-8e8f625efa20 lvm2 a- 464,72G 464,71G /dev/sda3 VG_XenStorage-e8fe919f-5899-6432-3429-f571180fc308 lvm2 a- 457,75G 457,75G [root@xenserver-master ~]#
Akhirnya SR baru dengan tipe LVM berhasil dibuat. Berikut adalah perubahan yang terjadi pada host.
[root@xenserver-master ~]# fdisk -l WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted. Disk /dev/sda: 500.1 GB, 500107862016 bytes 256 heads, 63 sectors/track, 60563 cylinders Units = cylinders of 16128 * 512 = 8257536 bytes Device Boot Start End Blocks Id System /dev/sda1 * 1 60564 488386583+ ee EFI GPT Disk /dev/sdb: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk /dev/sdb doesn't contain a valid partition table Disk /dev/dm-0: 498.9 GB, 498999492608 bytes 255 heads, 63 sectors/track, 60666 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk /dev/dm-0 doesn't contain a valid partition table [root@xenserver-master ~]# pvs PV VG Fmt Attr PSize PFree /dev/mapper/ddf1_4c5349202020202080862925000000004711471100001450 VG_XenStorage-05412087-5870-d6c0-0423-8e8f625efa20 lvm2 a- 464,72G 464,71G /dev/sda3 VG_XenStorage-e8fe919f-5899-6432-3429-f571180fc308 lvm2 a- 457,75G 457,75G [root@xenserver-master ~]# ls -l /dev/disk/by-id/ total 0 lrwxrwxrwx 1 root root 9 Sep 4 08:05 scsi-SATA_WDC_WD5001AALS-_WD-WMAYP0040258 -> ../../sdb lrwxrwxrwx 1 root root 9 Sep 4 08:05 scsi-SATA_WDC_WD5001AALS-_WD-WMAYP0061640 -> ../../sda lrwxrwxrwx 1 root root 10 Sep 4 08:05 scsi-SATA_WDC_WD5001AALS-_WD-WMAYP0061640-part1 -> ../../sda1 lrwxrwxrwx 1 root root 10 Sep 4 08:05 scsi-SATA_WDC_WD5001AALS-_WD-WMAYP0061640-part2 -> ../../sda2 lrwxrwxrwx 1 root root 10 Sep 4 08:05 scsi-SATA_WDC_WD5001AALS-_WD-WMAYP0061640-part3 -> ../../sda3 [root@xenserver-master ~]# ls -l /dev/disk/by- by-id/ by-label/ by-path/ by-scsibus/ by-scsid/ by-uuid/
[root@xenserver-master ~]# ls -l /dev/disk/by-label/ total 0 lrwxrwxrwx 1 root root 10 Sep 4 08:05 root-zjlmllpm -> ../../sda1 [root@xenserver-master ~]# ls -l /dev/disk/by-path/ total 0 lrwxrwxrwx 1 root root 9 Sep 4 08:05 pci-0000:00:1f.2-scsi-0:0:0:0 -> ../../sr0 lrwxrwxrwx 1 root root 9 Sep 4 08:05 pci-0000:00:1f.2-scsi-1:0:0:0 -> ../../sda lrwxrwxrwx 1 root root 10 Sep 4 08:05 pci-0000:00:1f.2-scsi-1:0:0:0-part1 -> ../../sda1 lrwxrwxrwx 1 root root 10 Sep 4 08:05 pci-0000:00:1f.2-scsi-1:0:0:0-part2 -> ../../sda2 lrwxrwxrwx 1 root root 10 Sep 4 08:05 pci-0000:00:1f.2-scsi-1:0:0:0-part3 -> ../../sda3 lrwxrwxrwx 1 root root 9 Sep 4 08:05 pci-0000:00:1f.2-scsi-3:0:0:0 -> ../../sdb [root@xenserver-master ~]# ls -l /dev/disk/by-scsibus/ total 0 lrwxrwxrwx 1 root root 9 Sep 4 08:05 SATA_WDC_WD5001AALS-_WD-WMAYP0040258-3:0:0:0 -> ../../sdb lrwxrwxrwx 1 root root 9 Sep 4 08:05 SATA_WDC_WD5001AALS-_WD-WMAYP0061640-1:0:0:0 -> ../../sda [root@xenserver-master ~]# ls -l /dev/disk/by-scsid/ total 0 drwxr-xr-x 2 root root 60 Sep 4 08:05 ddf1_4c5349202020202080862925000000004711471100001450 drwxr-xr-x 2 root root 60 Sep 4 08:05 SATA_WDC_WD5001AALS-_WD-WMAYP0040258 drwxr-xr-x 2 root root 60 Sep 4 08:05 SATA_WDC_WD5001AALS-_WD-WMAYP0061640
[root@xenserver-master ~]# xe sr-list name-label=Backup\ Storage uuid ( RO) : 05412087-5870-d6c0-0423-8e8f625efa20 name-label ( RW): Backup Storage name-description ( RW): host ( RO): xenserver-master type ( RO): lvm content-type ( RO): user [root@xenserver-master ~]# xe vdi-list sr-uuid=05412087-5870-d6c0-0423-8e8f625efa20 [root@xenserver-master ~]# xe pbd-list sr-uuid=05412087-5870-d6c0-0423-8e8f625efa20 uuid ( RO) : 0beb8048-0d73-6cba-06b3-e6a7b42b7592 host-uuid ( RO): e8d62a67-23b6-4a27-b276-f4129e3bcf48 sr-uuid ( RO): 05412087-5870-d6c0-0423-8e8f625efa20 device-config (MRO): device: /dev/dm-0 currently-attached ( RO): true [root@xenserver-master ~]# xe pbd-list sr-uuid=05412087-5870-d6c0-0423-8e8f625efa20 params=all uuid ( RO) : 0beb8048-0d73-6cba-06b3-e6a7b42b7592 host ( RO) [DEPRECATED]: e8d62a67-23b6-4a27-b276-f4129e3bcf48 host-uuid ( RO): e8d62a67-23b6-4a27-b276-f4129e3bcf48 host-name-label ( RO): xenserver-master sr-uuid ( RO): 05412087-5870-d6c0-0423-8e8f625efa20 sr-name-label ( RO): Backup Storage device-config (MRO): device: /dev/dm-0 currently-attached ( RO): true other-config (MRW): storage_driver_domain: OpaqueRef:1452abf5-536f-bee6-a4ba-4ce21d2988d2
Walaupun SR LVM baru berhasil di-create, namun saya belum yakin dengan langkah-langkah yang saya lakukan karena belum sesuai dengan instruksi citrix. Akhirnya saya men-destroy SR tersebut untuk mengembalikan hardisk ke "/dev/sdb" ke posisi semula dengan tujuan untuk me-create SR kembali sesuai dengan instruksi cirtix.
[root@xenserver-master ~]# xe sr-list name-label=Backup\ Storage uuid ( RO) : 05412087-5870-d6c0-0423-8e8f625efa20 name-label ( RW): Backup Storage name-description ( RW): host ( RO): xenserver-master type ( RO): lvm content-type ( RO): user [root@xenserver-master ~]# xe pbd-list sr-uuid=05412087-5870-d6c0-0423-8e8f625efa20 uuid ( RO) : 0beb8048-0d73-6cba-06b3-e6a7b42b7592 host-uuid ( RO): e8d62a67-23b6-4a27-b276-f4129e3bcf48 sr-uuid ( RO): 05412087-5870-d6c0-0423-8e8f625efa20 device-config (MRO): device: /dev/dm-0 currently-attached ( RO): true [root@xenserver-master ~]# xe pbd-unplug uuid=0beb8048-0d73-6cba-06b3-e6a7b42b7592 [root@xenserver-master ~]# xe pbd-list sr-uuid=05412087-5870-d6c0-0423-8e8f625efa20 uuid ( RO) : 0beb8048-0d73-6cba-06b3-e6a7b42b7592 host-uuid ( RO): e8d62a67-23b6-4a27-b276-f4129e3bcf48 sr-uuid ( RO): 05412087-5870-d6c0-0423-8e8f625efa20 device-config (MRO): device: /dev/dm-0 currently-attached ( RO): false [root@xenserver-master ~]# xe sr-destroy uuid=05412087-5870-d6c0-0423-8e8f625efa20 [root@xenserver-master ~]# xe pbd-list uuid ( RO) : 09104c2b-d933-0c6c-d7f8-a5292b685fae host-uuid ( RO): e8d62a67-23b6-4a27-b276-f4129e3bcf48 sr-uuid ( RO): bfebfb6b-6bfd-d96e-dc6a-90d6851ab2db device-config (MRO): location: /dev/xapi/block currently-attached ( RO): true uuid ( RO) : 00b9b1d4-aa1d-08da-2ed0-ae984c6dd5b7 host-uuid ( RO): e8d62a67-23b6-4a27-b276-f4129e3bcf48 sr-uuid ( RO): e4d972a7-9a61-01b7-f0de-ab7b402ca8c8 device-config (MRO): location: /dev/xapi/cd currently-attached ( RO): true uuid ( RO) : 7fc42cc2-9324-9447-1727-74b92b67a70c host-uuid ( RO): e8d62a67-23b6-4a27-b276-f4129e3bcf48 sr-uuid ( RO): e8fe919f-5899-6432-3429-f571180fc308 device-config (MRO): device: /dev/disk/by-id/scsi-SATA_WDC_WD5001AALS-_WD-WMAYP0061640-part3 currently-attached ( RO): true uuid ( RO) : 0320a7e9-035d-3140-ff0f-db1d7a7bd4a1 host-uuid ( RO): e8d62a67-23b6-4a27-b276-f4129e3bcf48 sr-uuid ( RO): b58a4904-7c6d-e79d-7367-c0160e6bb77a device-config (MRO): location: /opt/xensource/packages/iso; legacy_mode: true currently-attached ( RO): true [root@xenserver-master ~]# cat /proc/partitions major minor #blocks name 7 0 52378 loop0 8 0 488386584 sda 8 1 4193297 sda1 8 2 4193297 sda2 8 3 479996935 sda3 8 16 488386584 sdb 252 0 487304192 dm-0 252 1 4096 dm-1 [root@xenserver-master ~]#
Sekarang "/dev/dm-0" sudah tidak ada di daftar SR, PBD terkait juga sudah tidak ada, dan PV & VG yang dibentuk dari "/dev/dm-0" juga sudah tidak ada. Selanjutnya saya akan melakukan reboot untuk memastikan kondisi sistem benar-benar fresh. Kemudian saya akan me-create SR LVM baru dengan parameter yang sesuai dengan instruksi citrix disini.
[root@xenserver-master ~]# ll /dev/disk/by- by-id/ by-label/ by-path/ by-scsibus/ by-scsid/ by-uuid/ [root@xenserver-master ~]# ll /dev/disk/by-label/ total 0 lrwxrwxrwx 1 root root 10 Sep 4 09:37 root-zjlmllpm -> ../../sda1 [root@xenserver-master ~]# ll /dev/disk/by-path/ total 0 lrwxrwxrwx 1 root root 9 Sep 4 09:37 pci-0000:00:1f.2-scsi-0:0:0:0 -> ../../sr0 lrwxrwxrwx 1 root root 9 Sep 4 09:37 pci-0000:00:1f.2-scsi-1:0:0:0 -> ../../sda lrwxrwxrwx 1 root root 10 Sep 4 09:37 pci-0000:00:1f.2-scsi-1:0:0:0-part1 -> ../../sda1 lrwxrwxrwx 1 root root 10 Sep 4 09:37 pci-0000:00:1f.2-scsi-1:0:0:0-part2 -> ../../sda2 lrwxrwxrwx 1 root root 10 Sep 4 09:37 pci-0000:00:1f.2-scsi-1:0:0:0-part3 -> ../../sda3 lrwxrwxrwx 1 root root 9 Sep 4 09:37 pci-0000:00:1f.2-scsi-3:0:0:0 -> ../../sdb [root@xenserver-master ~]# ll /dev/disk/by-scsibus/ total 0 lrwxrwxrwx 1 root root 9 Sep 4 09:37 SATA_WDC_WD5001AALS-_WD-WMAYP0040258-3:0:0:0 -> ../../sdb lrwxrwxrwx 1 root root 9 Sep 4 09:37 SATA_WDC_WD5001AALS-_WD-WMAYP0061640-1:0:0:0 -> ../../sda [root@xenserver-master ~]# ll /dev/disk/by-id/ total 0 lrwxrwxrwx 1 root root 9 Sep 4 09:37 scsi-SATA_WDC_WD5001AALS-_WD-WMAYP0040258 -> ../../sdb lrwxrwxrwx 1 root root 9 Sep 4 09:37 scsi-SATA_WDC_WD5001AALS-_WD-WMAYP0061640 -> ../../sda lrwxrwxrwx 1 root root 10 Sep 4 09:37 scsi-SATA_WDC_WD5001AALS-_WD-WMAYP0061640-part1 -> ../../sda1 lrwxrwxrwx 1 root root 10 Sep 4 09:37 scsi-SATA_WDC_WD5001AALS-_WD-WMAYP0061640-part2 -> ../../sda2 lrwxrwxrwx 1 root root 10 Sep 4 09:37 scsi-SATA_WDC_WD5001AALS-_WD-WMAYP0061640-part3 -> ../../sda3 [root@xenserver-master ~]# xe sr-create content-type=user device-config:device=/dev/disk/by-id/scsi-SATA_WDC_WD5001AALS-_WD-WMAYP0040258 host-uuid=e8d62a67-23b6-4a27-b276-f4129e3bcf48 name-label="Backup Storage" shared=false type=lvm The SR operation cannot be performed because a device underlying the SR is in use by the host. [root@xenserver-master ~]# ll /dev/disk/by-scsi by-scsibus/ by-scsid/ [root@xenserver-master ~]# ll /dev/disk/by-scsi by-scsibus/ by-scsid/ [root@xenserver-master ~]# ll /dev/disk/by-scsid/ total 0 drwxr-xr-x 2 root root 60 Sep 4 09:37 ddf1_4c5349202020202080862925000000004711471100001450 drwxr-xr-x 2 root root 60 Sep 4 09:37 SATA_WDC_WD5001AALS-_WD-WMAYP0040258 drwxr-xr-x 2 root root 60 Sep 4 09:37 SATA_WDC_WD5001AALS-_WD-WMAYP0061640 [root@xenserver-master ~]# xe sr-create content-type=user device-config:device=/dev/disk/by-scsid/SATA_WDC_WD5001AALS-_WD-WMAYP0040258 host-uuid=e8d62a67-23b6-4a27-b276-f4129e3bcf48 name-label="Backup Storage" shared=false type=lvm The SR operation cannot be performed because a device underlying the SR is in use by the host. [root@xenserver-master ~]# xe sr-create content-type=user device-config:device=/dev/disk/by-scsibus/SATA_WDC_WD5001AALS-_WD-WMAYP0040258-3:0:0:0 host-uuid=e8d62a67-23b6-4a27-b276-f4129e3bcf48 name-label="Backup Storage" shared=false type=lvm The SR operation cannot be performed because a device underlying the SR is in use by the host. [root@xenserver-master ~]# ll /dev/disk/by- by-id/ by-label/ by-path/ by-scsibus/ by-scsid/ by-uuid/ [root@xenserver-master ~]# ll /dev/disk/by-label/ total 0 lrwxrwxrwx 1 root root 10 Sep 4 09:37 root-zjlmllpm -> ../../sda1 [root@xenserver-master ~]# ll /dev/disk/by-path/ total 0 lrwxrwxrwx 1 root root 9 Sep 4 09:37 pci-0000:00:1f.2-scsi-0:0:0:0 -> ../../sr0 lrwxrwxrwx 1 root root 9 Sep 4 09:37 pci-0000:00:1f.2-scsi-1:0:0:0 -> ../../sda lrwxrwxrwx 1 root root 10 Sep 4 09:37 pci-0000:00:1f.2-scsi-1:0:0:0-part1 -> ../../sda1 lrwxrwxrwx 1 root root 10 Sep 4 09:37 pci-0000:00:1f.2-scsi-1:0:0:0-part2 -> ../../sda2 lrwxrwxrwx 1 root root 10 Sep 4 09:37 pci-0000:00:1f.2-scsi-1:0:0:0-part3 -> ../../sda3 lrwxrwxrwx 1 root root 9 Sep 4 09:37 pci-0000:00:1f.2-scsi-3:0:0:0 -> ../../sdb [root@xenserver-master ~]# ll /dev/disk/by-uuid/ total 0 lrwxrwxrwx 1 root root 10 Sep 4 09:37 477f9ef1-8f6a-45eb-af23-6c0c1ca1efbf -> ../../sda1 [root@xenserver-master ~]# xe sr-create content-type=user device-config:device=/dev/disk/by-path/pci-0000:00:1f.2-scsi-3:0:0:0 host-uuid=e8d62a67-23b6-4a27-b276-f4129e3bcf48 name-label="Backup Storage" shared=false type=lvm The SR operation cannot be performed because a device underlying the SR is in use by the host. [root@xenserver-master ~]# xe sr-create content-type=user device-config:device=/dev/disk/by-scsid/ddf1_4c5349202020202080862925000000004711471100001450 host-uuid=e8d62a67-23b6-4a27-b276-f4129e3bcf48 name-label="Backup Storage" shared=false type=lvm The SR operation cannot be performed because a device underlying the SR is in use by the host. [root@xenserver-master ~]# fdisk -l WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted. Disk /dev/sda: 500.1 GB, 500107862016 bytes 256 heads, 63 sectors/track, 60563 cylinders Units = cylinders of 16128 * 512 = 8257536 bytes Device Boot Start End Blocks Id System /dev/sda1 * 1 60564 488386583+ ee EFI GPT Disk /dev/sdb: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System Disk /dev/dm-0: 498.9 GB, 498999492608 bytes 255 heads, 63 sectors/track, 60666 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System [root@xenserver-master ~]# cat /proc/partitions major minor #blocks name 7 0 52378 loop0 8 0 488386584 sda 8 1 4193297 sda1 8 2 4193297 sda2 8 3 479996935 sda3 8 16 488386584 sdb 252 0 487304192 dm-0 252 1 4096 dm-1 [root@xenserver-master ~]# ll /dev/disk/by-id/ total 0 lrwxrwxrwx 1 root root 9 Sep 4 09:37 scsi-SATA_WDC_WD5001AALS-_WD-WMAYP0040258 -> ../../sdb lrwxrwxrwx 1 root root 9 Sep 4 09:37 scsi-SATA_WDC_WD5001AALS-_WD-WMAYP0061640 -> ../../sda lrwxrwxrwx 1 root root 10 Sep 4 09:37 scsi-SATA_WDC_WD5001AALS-_WD-WMAYP0061640-part1 -> ../../sda1 lrwxrwxrwx 1 root root 10 Sep 4 09:37 scsi-SATA_WDC_WD5001AALS-_WD-WMAYP0061640-part2 -> ../../sda2 lrwxrwxrwx 1 root root 10 Sep 4 09:37 scsi-SATA_WDC_WD5001AALS-_WD-WMAYP0061640-part3 -> ../../sda3 [root@xenserver-master ~]# ll /dev/mapper/ control VG_XenStorage--e8fe919f--5899--6432--3429--f571180fc308-MGT ddf1_4c5349202020202080862925000000004711471100001450
Namun tidak ada satupun perintah diatas yang berhasil me-create sebuah SR LVM yang baru. Maka saya terpaksa menggunakan cara saya sebelumnya walaupun cara ini tidak ada di dalam Citrix XenServer Guide maupun pedoman langsung dari website citrix.
[root@xenserver-master ~]# xe sr-create host-uuid=e8d62a67-23b6-4a27-b276-f4129e3bcf48 content-type=user name-label="Backup Storage" shared=false device-config:device=/dev/dm-0 type=lvm cea7f560-d527-daf3-1f03-749231a04912 [root@xenserver-master ~]# xe pbd-list sr-name-label=Backup\ Storage uuid ( RO) : 66c86cae-e662-2b7c-2707-71e19d056de6 host-uuid ( RO): e8d62a67-23b6-4a27-b276-f4129e3bcf48 sr-uuid ( RO): cea7f560-d527-daf3-1f03-749231a04912 device-config (MRO): device: /dev/dm-0 currently-attached ( RO): true [root@xenserver-master ~]# xe sr-list uuid=cea7f560-d527-daf3-1f03-749231a04912 uuid ( RO) : cea7f560-d527-daf3-1f03-749231a04912 name-label ( RW): Backup Storage name-description ( RW): host ( RO): xenserver-master type ( RO): lvm content-type ( RO): user [root@xenserver-master ~]# xe vdi-list sr-uuid=cea7f560-d527-daf3-1f03-749231a04912 [root@xenserver-master ~]# pvs PV VG Fmt Attr PSize PFree /dev/mapper/ddf1_4c5349202020202080862925000000004711471100001450 VG_XenStorage-cea7f560-d527-daf3-1f03-749231a04912 lvm2 a- 464,72G 464,71G /dev/sda3 VG_XenStorage-e8fe919f-5899-6432-3429-f571180fc308 lvm2 a- 457,75G 457,75G [root@xenserver-master ~]# vgs VG #PV #LV #SN Attr VSize VFree VG_XenStorage-cea7f560-d527-daf3-1f03-749231a04912 1 1 0 wz--n- 464,72G 464,71G VG_XenStorage-e8fe919f-5899-6432-3429-f571180fc308 1 1 0 wz--n- 457,75G 457,75G [root@xenserver-master ~]# lvs LV VG Attr LSize Origin Snap% Move Log Copy% Convert MGT VG_XenStorage-cea7f560-d527-daf3-1f03-749231a04912 -wi-a- 4,00M MGT VG_XenStorage-e8fe919f-5899-6432-3429-f571180fc308 -wi-a- 4,00M [root@xenserver-master ~]#
Baiklah untuk tutoril kali ini kita cukupkan sampai disini saja. Pada tutorial selanjutnya insya Allah kita akan me-create sebuah VM baru dan melihat perubahan yang terjadi pada storage. Dan berikut saya berikan skema kondisi terakhir storage yang ada di host xenserver.
Dan gambar dibawah ini adalah penampakan SR "Backup Storage" dari XenCenter.
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