On Thu, 17 Jun 2010 at 2:59pm, Craig Tierney wrote
I am looking for a little help to find out what block sizes (as shown
by stat) by Linux based parallel filesystems.
You can find this by running stat on a file. For example on Lustre:
# stat /lfs0/bigfile
File: `/lfs0//bigfile'
Size: 1073741824 Blocks: 2097160 IO Block: 2097152 regular file
Device: 59924a4a8h/1502839976d Inode: 45361266 Links: 1
Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2010-06-17 20:24:32.000000000 +0000
Modify: 2010-06-17 20:16:49.000000000 +0000
Change: 2010-06-17 20:16:49.000000000 +0000
If anyone can run this test and provide me with the filesystem
and result (as well as the OS used), it would be a big help. I am
specifically looking for GPFS results, but other products (Panasas,
GlusterFS, NetApp GX) would be helpful.
GlusterFS 3.0.4 on CentOS-5:
stat pdball.pir
File: `pdball.pir'
Size: 155471981 Blocks: 303984 IO Block: 4096 regular file
Device: 21h/33d Inode: 205792080 Links: 1
Access: (0644/-rw-r--r--) Uid: (11805/database) Gid: (11805/database)
Access: 2010-06-10 16:55:43.000000000 -0700
Modify: 2010-06-10 06:03:53.000000000 -0700
Change: 2010-06-10 23:36:14.000000000 -0700
--
Joshua Baker-LePain
QB3 Shared Cluster Sysadmin
UCSF
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