RHEL4U7下的9TB mkfs.ext3分區問題
硬體設備：DL 380G5一台 內裝兩塊A8002A HBA卡（EMULEX晶元） MSA2000FC AJ745
操作系統：RHEL4U7
問題如下：
(parted) mkfs
分區編號？ 1
文件系統？ ? ext3
未實現: 關於創建 ext3 文件系統的支持尚未實現。
(parted) print
/dev/mapper/mpath0 的磁碟幾何結構：0.000-8584682.000 兆位元組
磁碟標籤類型：gpt
Minor 起始點 終止點 文件系統 名稱 標誌
1 0.017 8584681.983
(parted) quit
# fdisk -l
Disk /dev/cciss/c0d0: 146.7 GB, 146778685440 bytes
255 heads, 63 sectors/track, 17844 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/cciss/c0d0p1 * 1 13 104391 83 Linux
/dev/cciss/c0d0p2 14 17844 143227507+ 8e Linux LVM
WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted.
Disk /dev/sda: 9001.6 GB, 9001691512832 bytes
255 heads, 63 sectors/track, 1094393 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 1 267350 2147483647+ ee EFI GPT
WARNING: GPT (GUID Partition Table) detected on '/dev/sdb'! The util fdisk doesn't support GPT. Use GNU Parted.
Disk /dev/sdb: 9001.6 GB, 9001691512832 bytes
255 heads, 63 sectors/track, 1094393 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdb1 1 267350 2147483647+ ee EFI GPT
WARNING: GPT (GUID Partition Table) detected on '/dev/dm-2'! The util fdisk doesn't support GPT. Use GNU Parted.
Disk /dev/dm-2: 9001.6 GB, 9001691512832 bytes
255 heads, 63 sectors/track, 1094393 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/dm-2p1 1 267350 2147483647+ ee EFI GPT
Disk /dev/dm-3: 205.5 GB, 205595800576 bytes
255 heads, 63 sectors/track, 24995 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/dm-3 doesn't contain a valid partition table
# mkfs.ext3 /dev/mapper/mpath0
mke2fs 1.35 (28-Feb-2004)
mkfs.ext3: Filesystem too large. No more than 2**31-1 blocks
(8TB using a blocksize of 4k) are currently supported.
不讓創建文件系統。那裡出現錯誤？
《解決方案》
回復 #1 ldren 的帖子
建議考慮ext4文件系統
《解決方案》
我使用的方式是gpt+ext3的方式。這個相對穩定些。感謝答覆。
《解決方案》
超過2T,,需要使用GPT.
《解決方案》
目前情況如下：能否看出可以做出7.5TB?
# cd /dev/mapper/
# ls
control mpath0 mpath0p1 VolGroup00-LogVol00 VolGroup00-LogVol01
# cat /proc/partitions
major minor #blocks name
104 0 143338560 cciss/c0d0
104 1 104391 cciss/c0d0p1
104 2 143227507 cciss/c0d0p2
8 0 8790714368 sda
8 1 7679999983 sda1
8 16 8790714368 sdb
8 17 7679999983 sdb1
253 0 137756672 dm-0
253 1 5406720 dm-1
253 2 8790714368 dm-2
253 3 1237549039 dm-3
# mkfs.ext3 /dev/mapper/mpath0
mke2fs 1.35 (28-Feb-2004)
mkfs.ext3: Filesystem too large. No more than 2**31-1 blocks
(8TB using a blocksize of 4k) are currently supported.
# mkfs.ext3 /dev/mapper/mpath0p1
mke2fs 1.35 (28-Feb-2004)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
154697728 inodes, 309387259 blocks
15469362 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=310378496
9442 block groups
32768 blocks per group, 32768 fragments per group
16384 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
102400000, 214990848
Writing inode table xxxx/9442
《解決方案》
# mkfs.ext3 /dev/mapper/mpath0p1
mke2fs 1.35 (28-Feb-2004)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
154697728 inodes, 309387259 blocks
15469362 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=310378496
9442 block groups
32768 blocks per group, 32768 fragments per group
16384 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
102400000, 214990848
Writing inode tables: done
Creating journal (8192 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 26 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
#
# mount /dev/mapper/mpath0p1 /var/ftp/pub
# dh -f
bash: dh: command not found
# df -h
Filesystem 容量 已用 可用 已用% 掛載點
/dev/mapper/VolGroup00-LogVol00
130G 4.5G 119G 4% /
/dev/cciss/c0d0p1 99M 15M 79M 16% /boot
none 16G 0 16G 0% /dev/shm
/dev/mapper/mpath0p1 1.2T 109M 1.1T 1% /var/ftp/pub
#
結果為1.2T。看來gpt+ext3的方式難成功。各位能看出那個步驟錯誤了？
《解決方案》
ext3支持超過8T的文件系統么？
《解決方案》
回復 #7 straw 的帖子
EXT3 Size Limits :
Block size Max file size Max filesystem size
1KiB 16GiB 2TiB
2KiB 256GiB 8TiB
4KiB 2TiB 16TiB
8KiB 16TiB 32TiB
決定單個文件大小取決於文件系統大小的限制，而決定文件系統大小則跟block的大小有關係。
[ 本帖最後由 hbwangting 於 2009-6-2 11:41 編輯 ]
《解決方案》
原帖由 ldren 於 2009-6-1 18:14 發表 http://linux.chinaunix.net/bbs/images/common/back.gif
目前情況如下：能否看出可以做出7.5TB?
# cd /dev/mapper/
# ls
control mpath0 mpath0p1 VolGroup00-LogVol00 VolGroup00-LogVol01
/dev/mapper/裡面為什麼看不到dm-2設備？懷疑樓主的mutipath沒做成功，lz可以貼出multipath -ll命令的輸出結果，你mkfs.ext3 /dev/mapper/mpath0時的mpath0設備如果不是EVA陣列櫃的空間，而是本地陣列的空間，就可以解釋為什麼不時8TB而是1.2TB啦，當然這些都是我個人的猜測。
《解決方案》
以下是鏈路，沒有問題的。
# multipath -ll
mpath0 (3600c0ff000d7b45dd84cf94901000000)
\_ round-robin 0
\_ 0:0:0:0 sda 8:0
\_ 1:0:0:0 sdb 8:16
# cd /dev/mapper/
# ls
control mpath0 VolGroup00-LogVol00 VolGroup00-LogVol01
本地磁碟也不會是。因為我指定了路徑，mkfs.ext3 /dev/mapper/mpath0/mapth0p1
