AIX 7.1创建增强型JFS文件系统的问题？

Question

我是AIX的新手，正在尝试创建我的第一个挂载在/usr1上的jfs文件系统。

我首先从可用的磁盘创建我的卷组。

#/usr/sbin/mklv -y'vl_usr1' -t'jfs2' -c'2' vg_usr1 6005
van-oppy# lsvg vg_usr1
VOLUME GROUP:       vg_usr1                  VG IDENTIFIER:  000015010000d60000000140f464119b
VG STATE:           active                   PP SIZE:        128 megabyte(s)
VG PERMISSION:      read/write               TOTAL PPs:      12012 (1537536 megabytes)
MAX LVs:            256                      FREE PPs:       2 (256 megabytes)
LVs:                1                        USED PPs:       12010 (1537280 megabytes)
OPEN LVs:           0                        QUORUM:         12 (Enabled)
TOTAL PVs:          22                       VG DESCRIPTORS: 22
STALE PVs:          0                        STALE PPs:      0
ACTIVE PVs:         22                       AUTO ON:        yes
MAX PPs per VG:     32512
MAX PPs per PV:     1016                     MAX PVs:        32
LTG size (Dynamic): 256 kilobyte(s)          AUTO SYNC:      no
HOT SPARE:          no                       BB POLICY:      relocatable

PV RESTRICTION:     none                     INFINITE RETRY: noegabytes)
OPEN LVs:           2                        QUORUM:         3 (Enabled)
TOTAL PVs:          4                        VG DESCRIPTORS: 4
STALE PVs:          0                        STALE PPs:      0
ACTIVE PVs:         4                        AUTO ON:        yes
MAX PPs per VG:     32768                    MAX PVs:        1024
LTG size (Dynamic): 256 kilobyte(s)          AUTO SYNC:      no
HOT SPARE:          no                       BB POLICY:      relocatable
MIRROR POOL STRICT: off
PV RESTRICTION:     none                     INFINITE RETRY: no

下面是逻辑卷的lslv ...

# lslv vl_usr1
LOGICAL VOLUME:     vl_usr1                VOLUME GROUP:   vg_usr1
LV IDENTIFIER:      000015010000d60000000140f464119b.1 PERMISSION:     read/write
VG STATE:           active/complete        LV STATE:       closed/syncd
TYPE:               jfs2                   WRITE VERIFY:   off
MAX LPs:            6005                   PP SIZE:        128 megabyte(s)
COPIES:             2                      SCHED POLICY:   parallel
LPs:                6005                   PPs:            12010
STALE PPs:          0                      BB POLICY:      relocatable
INTER-POLICY:       minimum                RELOCATABLE:    yes
INTRA-POLICY:       middle                 UPPER BOUND:    32
MOUNT POINT:        N/A                    LABEL:          None
MIRROR WRITE CONSISTENCY: on/ACTIVE
EACH LP COPY ON A SEPARATE PV ?: yes
Serialize IO ?:     NO
INFINITE RETRY:     no

在创建逻辑卷时，我将其设置为具有2个副本，因此现在我的空闲LP为6005。

当我尝试下一步创建增强的JFS2文件系统时，它失败了。

                    Add an Enhanced Journaled File System

Type or select values in entry fields.
Press Enter AFTER making all desired changes.

[TOP]                                                   [Entry Fields]
Volume group name                                   vg_usr1
SIZE of file system
        Unit Size                                   Megabytes              +
*         Number of units                            [768640]                 #
* MOUNT POINT                                        [/usr1]
Mount AUTOMATICALLY at system restart?              yes                    +
PERMISSIONS                                         read/write             +
Mount OPTIONS                                      []                      +
Block Size (bytes)                                  4096                   +
Logical Volume for Log                                                     +
Inline Log size (MBytes)                           []                       #
Extended Attribute Format                                                  +
ENABLE Quota Management?                            no                     +
[MORE...3]

F1=Help             F2=Refresh          F3=Cancel           F4=List
Esc+5=Reset         Esc+6=Command       Esc+7=Edit          Esc+8=Image
Esc+9=Shell         Esc+0=Exit          Enter=Do

提交失败，返回..

0516-404 allocp: This system cannot fulfill the allocation request. There are not enough free partitions or not enough physical volumes to keep strictness and satisfy allocation requests.  The command should be retried with different allocation characteristics.
0516-822 mklv: Unable to create logical volume.
crfs: 0506-972 Cannot create logical volume for file system.
rmlv: Logical volume loglv00 is removed.

我搞不懂为什么？我的免费PPs是6005，所以6005x128= 768640mb是我在创建过程中设置的。我也试着把这个数字降低到768000mb，也就是6000 PPs，但还是不行。

有没有哪位AIX专家能够解释这种方法不起作用的原因？试图理解LVM是如何工作的……

Answer 1

我已经解决了我的问题，我分配了比可用空间更多的空间，并使用错误的计算得出最大可用空间。