On Sun, 2009-07-12 at 16:38 -0500, Bob Friesenhahn wrote:
> In order to raise visibility of this issue, I invite others to see if
> they can reproduce it in their ZFS pools. The script at
>
> http://www.simplesystems.org/users/bfriesen/zfs-discuss/zfs-cache-test.ksh
Here's the results from two machines, the first has 12x400MHz US-II
CPUs, 11GB of RAM and the disks are 18GB 10krpm SCSI in a split D1000:
System Configuration: Sun Microsystems sun4u 8-slot Sun Enterprise
4000/5000
System architecture: sparc
System release level: 5.11 snv_101
CPU ISA list: sparcv9+vis sparcv9 sparcv8plus+vis sparcv8plus sparcv8
sparcv8-fsmuld sparcv7 sparc
Pool configuration:
pool: space
state: ONLINE
status: One or more devices has experienced an unrecoverable error. An
attempt was made to correct the error. Applications are unaffected.
action: Determine if the device needs to be replaced, and clear the
errors
using 'zpool clear' or replace the device with 'zpool replace'.
see: http://www.sun.com/msg/ZFS-8000-9P
scrub: scrub completed after 0h22m with 0 errors on Mon Jul 13 17:18:55
2009
config:
NAME STATE READ WRITE CKSUM
space ONLINE 0 0 0
mirror ONLINE 0 0 0
c0t3d0 ONLINE 0 0 0
c2t11d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c0t2d0 ONLINE 0 0 0
c2t10d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c0t4d0 ONLINE 0 0 0
c2t12d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c0t5d0 ONLINE 0 0 0
c2t13d0 ONLINE 1 0 0 128K repaired
errors: No known data errors
zfs create space/zfscachetest
Creating data file set (3000 files of 8192000 bytes) under /space/zfscachetest
...
Done!
zfs unmount space/zfscachetest
zfs mount space/zfscachetest
Doing initial (unmount/mount) 'cpio -C 131072 -o > /dev/null'
48000256 blocks
real 11m40.67s
user 0m20.32s
sys 5m27.16s
Doing second 'cpio -C 131072 -o > /dev/null'
48000256 blocks
real 31m29.42s
user 0m19.31s
sys 6m46.39s
Feel free to clean up with 'zfs destroy space/zfscachetest'.
The second has 2x1.2GHz US-III+, 4GB RAM and 10krpm FC disks on a single
loop.
System Configuration: Sun Microsystems sun4u Sun Fire 480R
System architecture: sparc
System release level: 5.11 snv_97
CPU ISA list: sparcv9+vis2 sparcv9+vis sparcv9 sparcv8plus+vis2 sparcv8plus+vis
sparcv8plus sparcv8 sparcv8-fsmuld sparcv7 sparc
Pool configuration:
pool: space
state: ONLINE
scrub: none requested
config:
NAME STATE READ WRITE CKSUM
space ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t34d0 ONLINE 0 0 0
c1t48d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t35d0 ONLINE 0 0 0
c1t49d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t36d0 ONLINE 0 0 0
c1t51d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t33d0 ONLINE 0 0 0
c1t52d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t38d0 ONLINE 0 0 0
c1t53d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t39d0 ONLINE 0 0 0
c1t54d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t40d0 ONLINE 0 0 0
c1t55d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t41d0 ONLINE 0 0 0
c1t56d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t42d0 ONLINE 0 0 0
c1t57d0 ONLINE 0 0 0
logs ONLINE 0 0 0
c1t50d0 ONLINE 0 0 0
errors: No known data errors
zfs create space/zfscachetest
Creating data file set (3000 files of 8192000 bytes) under /space/zfscachetest
...
Done!
zfs unmount space/zfscachetest
zfs mount space/zfscachetest
Doing initial (unmount/mount) 'cpio -C 131072 -o > /dev/null'
48000256 blocks
real 5m45.66s
user 0m5.63s
sys 1m14.66s
Doing second 'cpio -C 131072 -o > /dev/null'
48000256 blocks
real 15m29.42s
user 0m5.65s
sys 1m37.83s
Feel free to clean up with 'zfs destroy space/zfscachetest'.
James Andrewartha
_______________________________________________
zfs-discuss mailing list
zfs-discuss@opensolaris.org
http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
