[--component-end|-E end1] [STRIPE_OPTIONS]
[--component-end|-E end2] [STRIPE_OPTIONS] ... <replaceable>dirname</replaceable></screen>
<para><emphasis role="bold">Example</emphasis></para>
- <screen>$ mkdir /mnt/testfs/pfldir
-$ touch /mnt/testfs/pfldir/commonfile
-$ lfs setstripe -E 64M -c 2 -i 0 -E -1 -c 4 -i 0 /mnt/testfs/pfldir</screen>
+ <screen>
+$ mkdir /mnt/testfs/pfldir
+$ lfs setstripe -E 256M -c 1 -E 16G -c 4 -E -1 -S 4M -c -1 /mnt/testfs/pfldir
+</screen>
<para>When you run <literal>lfs getstripe</literal>, you will see:
</para>
- <screen>$ lfs getstripe /mnt/testfs/pfldir
+ <screen>
+$ lfs getstripe /mnt/testfs/pfldir
/mnt/testfs/pfldir
lcm_layout_gen: 0
- lcm_entry_count: 2
+ lcm_entry_count: 3
lcme_id: N/A
lcme_flags: 0
lcme_extent.e_start: 0
- lcme_extent.e_end: 67108864
- stripe_count: 2 stripe_size: 1048576 stripe_offset: 0
+ lcme_extent.e_end: 268435456
+ stripe_count: 1 stripe_size: 1048576 stripe_offset: -1
lcme_id: N/A
lcme_flags: 0
- lcme_extent.e_start: 67108864
+ lcme_extent.e_start: 268435456
+ lcme_extent.e_end: 17179869184
+ stripe_count: 4 stripe_size: 1048576 stripe_offset: -1
+ lcme_id: N/A
+ lcme_flags: 0
+ lcme_extent.e_start: 17179869184
lcme_extent.e_end: EOF
- stripe_count: 4 stripe_size: 1048576 stripe_offset: 0
-/mnt/testfs/pfldir/commonfile
-lmm_stripe_count: 1
-lmm_stripe_size: 1048576
-lmm_pattern: 1
-lmm_layout_gen: 0
-lmm_stripe_offset: 0
- obdidx objid objid group
- 0 9 0x9 0</screen>
+ stripe_count: -1 stripe_size: 4194304 stripe_offset: -1
+</screen>
<para>If you create a file under <literal>/mnt/testfs/pfldir</literal>,
- the layout of that file will inherit 2 components from its parent
+ the layout of that file will inherit the layout from its parent
directory:</para>
- <screen>$ touch /mnt/testfs/pfldir/pflfile
+ <screen>
+$ touch /mnt/testfs/pfldir/pflfile
$ lfs getstripe /mnt/testfs/pfldir/pflfile
/mnt/testfs/pfldir/pflfile
lcm_layout_gen: 2
- lcm_entry_count: 2
+ lcm_entry_count: 3
lcme_id: 1
lcme_flags: init
lcme_extent.e_start: 0
- lcme_extent.e_end: 67108864
- lmm_stripe_count: 2
+ lcme_extent.e_end: 268435456
+ lmm_stripe_count: 1
lmm_stripe_size: 1048576
- lmm_pattern: 1
+ lmm_pattern: raid0
lmm_layout_gen: 0
- lmm_stripe_offset: 0
+ lmm_stripe_offset: 1
lmm_objects:
- - 0: { l_ost_idx: 0, l_fid: [0x100000000:0xa:0x0] }
- - 1: { l_ost_idx: 1, l_fid: [0x100010000:0x9:0x0] }
+ - 0: { l_ost_idx: 1, l_fid: [0x100010000:0xa:0x0] }
lcme_id: 2
lcme_flags: 0
- lcme_extent.e_start: 67108864
- lcme_extent.e_end: EOF
+ lcme_extent.e_start: 268435456
+ lcme_extent.e_end: 17179869184
lmm_stripe_count: 4
lmm_stripe_size: 1048576
- lmm_pattern: 1
+ lmm_pattern: raid0
lmm_layout_gen: 0
- lmm_stripe_offset: 0</screen>
+ lmm_stripe_offset: -1
+
+ lcme_id: 3
+ lcme_flags: 0
+ lcme_extent.e_start: 17179869184
+ lcme_extent.e_end: EOF
+ lmm_stripe_count: -1
+ lmm_stripe_size: 4194304
+ lmm_pattern: raid0
+ lmm_layout_gen: 0
+ lmm_stripe_offset: -1
+</screen>
<note><para>
<literal>lfs setstripe --component-add/del</literal> can't be run
on a directory, because default layout in directory is likea config,
which can be arbitrarily changed by <literal>lfs setstripe</literal>,
while layout in file may have data (OST objects) attached. If you want
- to delete default layout in a directory, please run <literal>lfs
- setstripe -d <replaceable>dirname</replaceable></literal>, like :
- <screen>$ lfs setstripe -d /mnt/testfs/pfldir
+ to delete default layout in a directory, run
+ <literal>lfs setstripe -d <replaceable>dirname</replaceable></literal>
+ to return the directory to the filesystem-wide defaults, like:
+ <screen>
+$ lfs setstripe -d /mnt/testfs/pfldir
$ lfs getstripe -d /mnt/testfs/pfldir
/mnt/testfs/pfldir
stripe_count: 1 stripe_size: 1048576 stripe_offset: -1
lmm_layout_gen: 0
lmm_stripe_offset: 0
obdidx objid objid group
- 0 9 0x9 0</screen>
+ 2 9 0x9 0
+</screen>
</para></note>
</section>
</section>
<para>This section describes how to check available free space on disks and how free space is
allocated. It then describes how to set the threshold and weighting factors for the allocation
algorithms.</para>
- <section xml:id="dbdoclet.50438209_35838">
+ <section xml:id="dbdoclet.checking_free_space">
<title>Checking File System Free Space</title>
<para>Free space is an important consideration in assigning file stripes. The <literal>lfs
df</literal> command can be used to show available disk space on the mounted Lustre file
git://git.whamcloud.com / doc / manual.git / blobdiff