[Bug 1574342] Re: Ship arcstat.py and arc_summary.py with zfsutils-linux
Colin Ian King
1574342 at bugs.launchpad.net
Thu Jul 28 19:49:46 UTC 2016
Hi Eric,
I applied these patches, built them in a ppa and then did a clean
install of zfsutils-linux from -proposed and then upgraded to the
packages in the ppa. However, your patches break the upgrade:
king at ubuntu:~$ dpkg -l | grep zfsutils-linux
ii zfsutils-linux 0.6.5.6-0ubuntu11 amd64 Native OpenZFS management utilities for Linux
king at ubuntu:~$ sudo add-apt-repository ppa:colin-king/zfs-0.6.5.7-lp1574342
[sudo] password for king:
More info: https://launchpad.net/~colin-king/+archive/ubuntu/zfs-0.6.5.7-lp1574342
Press [ENTER] to continue or ctrl-c to cancel adding it
gpg: keyring `/tmp/tmp3bjyv0sl/secring.gpg' created
gpg: keyring `/tmp/tmp3bjyv0sl/pubring.gpg' created
gpg: requesting key B0F01786 from hkp server keyserver.ubuntu.com
gpg: /tmp/tmp3bjyv0sl/trustdb.gpg: trustdb created
gpg: key XXXXXXXXX: public key "Launchpad PPA for Colin King" imported
gpg: Total number processed: 1
gpg: imported: 1 (RSA: 1)
OK
king at ubuntu:~$ sudo apt-get update
Hit:1 http://security.ubuntu.com/ubuntu xenial-security InRelease
Hit:2 http://gb.archive.ubuntu.com/ubuntu xenial InRelease
Get:3 http://ppa.launchpad.net/colin-king/zfs-0.6.5.7-lp1574342/ubuntu xenial InRelease [17.6 kB]
Hit:4 http://gb.archive.ubuntu.com/ubuntu xenial-updates InRelease
Hit:5 http://gb.archive.ubuntu.com/ubuntu xenial-proposed InRelease
Hit:6 http://gb.archive.ubuntu.com/ubuntu xenial-backports InRelease
Get:7 http://ppa.launchpad.net/colin-king/zfs-0.6.5.7-lp1574342/ubuntu xenial/main amd64 Packages [3,024 B]
Get:8 http://ppa.launchpad.net/colin-king/zfs-0.6.5.7-lp1574342/ubuntu xenial/main i386 Packages [3,032 B]
Get:9 http://ppa.launchpad.net/colin-king/zfs-0.6.5.7-lp1574342/ubuntu xenial/main Translation-en [1,584 B]
Fetched 25.2 kB in 1s (21.5 kB/s)
Reading package lists... Done
king at ubuntu:~$ sudo apt-get dist-upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following package was automatically installed and is no longer required:
linux-image-extra-4.3.0-7-generic
Use 'sudo apt autoremove' to remove it.
The following NEW packages will be installed
libpython-stdlib python python-minimal python2.7 python2.7-minimal
The following packages will be upgraded:
libnvpair1linux libuutil1linux libzfs2linux libzpool2linux zfs-doc zfs-zed
zfsutils-linux
7 to upgrade, 5 to newly install, 0 to remove and 0 not to upgrade.
Need to get 2,610 kB of archives.
After this operation, 4,986 kB of additional disk space will be used.
Do you want to continue? [Y/n]
Get:1 http://gb.archive.ubuntu.com/ubuntu xenial-updates/main amd64 python2.7-minimal amd64 2.7.12-1~16.04 [1,294 kB]
Get:2 http://ppa.launchpad.net/colin-king/zfs-0.6.5.7-lp1574342/ubuntu xenial/main amd64 libuutil1linux amd64 0.6.5.6-0ubuntu12 [27.5 kB]
Get:3 http://ppa.launchpad.net/colin-king/zfs-0.6.5.7-lp1574342/ubuntu xenial/main amd64 libzpool2linux amd64 0.6.5.6-0ubuntu12 [384 kB]
Get:4 http://ppa.launchpad.net/colin-king/zfs-0.6.5.7-lp1574342/ubuntu xenial/main amd64 libzfs2linux amd64 0.6.5.6-0ubuntu12 [106 kB]
Get:5 http://ppa.launchpad.net/colin-king/zfs-0.6.5.7-lp1574342/ubuntu xenial/main amd64 zfs-zed amd64 0.6.5.6-0ubuntu12 [29.8 kB]
Get:6 http://ppa.launchpad.net/colin-king/zfs-0.6.5.7-lp1574342/ubuntu xenial/main amd64 zfsutils-linux amd64 0.6.5.6-0ubuntu12 [290 kB]
Get:7 http://ppa.launchpad.net/colin-king/zfs-0.6.5.7-lp1574342/ubuntu xenial/main amd64 libnvpair1linux amd64 0.6.5.6-0ubuntu12 [23.4 kB]
Get:8 http://ppa.launchpad.net/colin-king/zfs-0.6.5.7-lp1574342/ubuntu xenial/main amd64 zfs-doc all 0.6.5.6-0ubuntu12 [58.2 kB]
Get:9 http://gb.archive.ubuntu.com/ubuntu xenial/main amd64 python-minimal amd64 2.7.11-1 [28.2 kB]
Get:10 http://gb.archive.ubuntu.com/ubuntu xenial-updates/main amd64 python2.7 amd64 2.7.12-1~16.04 [224 kB]
Get:11 http://gb.archive.ubuntu.com/ubuntu xenial/main amd64 libpython-stdlib amd64 2.7.11-1 [7,656 B]
Get:12 http://gb.archive.ubuntu.com/ubuntu xenial/main amd64 python amd64 2.7.11-1 [137 kB]
Fetched 2,610 kB in 1s (2,399 kB/s)
Selecting previously unselected package python2.7-minimal.
(Reading database ... 128781 files and directories currently installed.)
Preparing to unpack .../python2.7-minimal_2.7.12-1~16.04_amd64.deb ...
Unpacking python2.7-minimal (2.7.12-1~16.04) ...
Selecting previously unselected package python-minimal.
Preparing to unpack .../python-minimal_2.7.11-1_amd64.deb ...
Unpacking python-minimal (2.7.11-1) ...
Selecting previously unselected package python2.7.
Preparing to unpack .../python2.7_2.7.12-1~16.04_amd64.deb ...
Unpacking python2.7 (2.7.12-1~16.04) ...
Selecting previously unselected package libpython-stdlib:amd64.
Preparing to unpack .../libpython-stdlib_2.7.11-1_amd64.deb ...
Unpacking libpython-stdlib:amd64 (2.7.11-1) ...
Processing triggers for man-db (2.7.5-1) ...
Processing triggers for mime-support (3.59ubuntu1) ...
Setting up python2.7-minimal (2.7.12-1~16.04) ...
Linking and byte-compiling packages for runtime python2.7...
Setting up python-minimal (2.7.11-1) ...
Selecting previously unselected package python.
(Reading database ... 128837 files and directories currently installed.)
Preparing to unpack .../python_2.7.11-1_amd64.deb ...
Unpacking python (2.7.11-1) ...
Preparing to unpack .../libuutil1linux_0.6.5.6-0ubuntu12_amd64.deb ...
Unpacking libuutil1linux (0.6.5.6-0ubuntu12) over (0.6.5.6-0ubuntu11) ...
Preparing to unpack .../libzpool2linux_0.6.5.6-0ubuntu12_amd64.deb ...
Unpacking libzpool2linux (0.6.5.6-0ubuntu12) over (0.6.5.6-0ubuntu11) ...
Preparing to unpack .../libzfs2linux_0.6.5.6-0ubuntu12_amd64.deb ...
Unpacking libzfs2linux (0.6.5.6-0ubuntu12) over (0.6.5.6-0ubuntu11) ...
Preparing to unpack .../zfs-zed_0.6.5.6-0ubuntu12_amd64.deb ...
Unpacking zfs-zed (0.6.5.6-0ubuntu12) over (0.6.5.6-0ubuntu11) ...
Preparing to unpack .../zfsutils-linux_0.6.5.6-0ubuntu12_amd64.deb ...
Unpacking zfsutils-linux (0.6.5.6-0ubuntu12) over (0.6.5.6-0ubuntu11) ...
dpkg: error processing archive /var/cache/apt/archives/zfsutils-linux_0.6.5.6-0ubuntu12_amd64.deb (--unpack):
trying to overwrite '/usr/sbin/zed', which is also in package zfs-zed 0.6.5.6-0ubuntu12
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
zfs-import-cache.service is a disabled or a static unit, not starting it.
zfs-import-scan.service is a disabled or a static unit, not starting it.
zfs-mount.service is a disabled or a static unit, not starting it.
Preparing to unpack .../libnvpair1linux_0.6.5.6-0ubuntu12_amd64.deb ...
Unpacking libnvpair1linux (0.6.5.6-0ubuntu12) over (0.6.5.6-0ubuntu11) ...
Preparing to unpack .../zfs-doc_0.6.5.6-0ubuntu12_all.deb ...
Unpacking zfs-doc (0.6.5.6-0ubuntu12) over (0.6.5.6-0ubuntu11) ...
Processing triggers for man-db (2.7.5-1) ...
Processing triggers for libc-bin (2.23-0ubuntu3) ...
Processing triggers for initramfs-tools (0.122ubuntu8.1) ...
update-initramfs: Generating /boot/initrd.img-4.4.0-34-generic
Processing triggers for systemd (229-4ubuntu7) ...
Processing triggers for ureadahead (0.100.0-19) ...
Errors were encountered while processing:
/var/cache/apt/archives/zfsutils-linux_0.6.5.6-0ubuntu12_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
king at ubuntu:~$
I think the problem is the change to the path:
override_dh_auto_configure:
@# Build the userland, but don't build the kernel modules.
dh_auto_configure -- \
- --bindir=/bin \
+ --bindir=/usr/sbin \
--sbindir=/sbin \
--libdir=/lib \
..which is causing the zed issues.
It's heading to 9pm UK time, so I'm running out of time to rebuild and
test this hypothesis.
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https://bugs.launchpad.net/bugs/1574342
Title:
Ship arcstat.py and arc_summary.py with zfsutils-linux
Status in zfs-linux package in Ubuntu:
In Progress
Status in zfs-linux source package in Xenial:
In Progress
Status in zfs-linux source package in Yakkety:
In Progress
Bug description:
[Impact]
zfsutils-linux missing some important tools.
Python3 compatible scripts : arc_summary.py, arcstat.py and
dbufstat.py found in src_code/cmd/ are not taken into account during
compilation.
* arc_summary.py : Provides a summary of the statistics
https://github.com/zfsonlinux/zfs/blob/master/cmd/arc_summary
* arcstat.py : Print out ZFS ARC Statistics exported via kstat(1)
https://github.com/zfsonlinux/zfs/tree/master/cmd/arcstat
* dbufstat.py : Print out statistics for all cached dmu buffers
https://github.com/zfsonlinux/zfs/blob/master/cmd/dbufstat
[Test Case]
# rmadison zfsutils-linux
...
zfsutils-linux | 0.6.5.6-0ubuntu10 | xenial-updates
...
# List contents of a deb package.
$ dpkg -c zfsutils-linux_0.6.5.6-0ubuntu10_amd64.deb | egrep "arcstat|arc_summary|dbufstat"
# You will notice there are not present.
[Regression Potential]
None expected, debian package[1] has already made the change to build
the python scripts.
[1]
Package: zfsutils-linux
Source: zfs-linux
Version: 0.6.5.7-1
Architecture: amd64
Maintainer: Debian ZFS on Linux maintainers <pkg-zfsonlinux-devel at lists.alioth.debian.org>
# List contents of a deb package.
$ dpkg -c zfsutils-linux_0.6.5.7-1_amd64.deb | egrep -i "arc|dbufstat"
-rwxr-xr-x root/root 40751 2016-05-31 03:40 ./bin/arc_summary.py
-rwxr-xr-x root/root 13057 2016-05-31 03:40 ./bin/arcstat.py
-rwxr-xr-x root/root 18718 2016-05-31 03:40 ./bin/dbufstat.py
[Other Info]
* This is based on the following Debian commits :
Debian git commits
===
commit 730989397063955d60a1845003cfb7433eba1e52
Author: Aron Xu <aron at debian.org>
Date: Tue Apr 26 17:01:29 2016 +0800
Add dh-python to b-d
--
commit 814413118fb88de3ce596a87a8a011f50c225fdd
Author: Aron Xu <aron at debian.org>
Date: Sun Nov 22 15:44:16 2015 +0800
Add python related dependencies
===
* Despite what Debian did by adding theses script under /bin.
I'll add them under /usr/sbin, which is more appropriate.
* Unfortunately manpage for theses 3 program seems limited.
There is none in Debian nor git upstream repo.
The only manpage I found is for arcstat online :
http://linux.die.net/man/1/arcstat
[Original Description]
arcstat.py and arc_summary.py are valuable tools to determine ZFS' ARC
usage, it is not obvious why they are not included in zfsutils-linux.
As ubuntu-minimal already depends on python3 it should be safe to
assume python is available, or am I mistaken here?
arcstat.py gives an iostat-like overview about ARC reads, hit rate, current and target size in regular intervals:
# ./arcstat.py 1
time read miss miss% dmis dm% pmis pm% mmis mm% arcsz c
19:22:33 0 0 0 0 0 0 0 0 0 2.0G 7.8G
19:22:34 3 0 0 0 0 0 0 0 0 2.0G 7.8G
19:22:35 21 0 0 0 0 0 0 0 0 2.0G 7.8G
^C
arc_summary.py shows a more detailed overview of the current ARC status and ZFS tunables:
# ./arc_summary.py
------------------------------------------------------------------------
ZFS Subsystem Report Sun Apr 24 19:23:25 2016
ARC Summary: (HEALTHY)
Memory Throttle Count: 0
ARC Misc:
Deleted: 46
Mutex Misses: 0
Evict Skips: 0
ARC Size: 25.10% 1.95 GiB
Target Size: (Adaptive) 100.00% 7.78 GiB
Min Size (Hard Limit): 0.40% 32.00 MiB
Max Size (High Water): 248:1 7.78 GiB
ARC Size Breakdown:
Recently Used Cache Size: 50.00% 3.89 GiB
Frequently Used Cache Size: 50.00% 3.89 GiB
ARC Hash Breakdown:
Elements Max: 32.31k
Elements Current: 99.78% 32.24k
Collisions: 40.54k
Chain Max: 3
Chains: 240
ARC Total accesses: 4.54m
Cache Hit Ratio: 99.39% 4.51m
Cache Miss Ratio: 0.61% 27.74k
Actual Hit Ratio: 98.76% 4.48m
Data Demand Efficiency: 99.73% 3.23m
Data Prefetch Efficiency: 11.32% 6.41k
CACHE HITS BY CACHE LIST:
Anonymously Used: 0.64% 28.65k
Most Recently Used: 21.90% 987.29k
Most Frequently Used: 77.47% 3.49m
Most Recently Used Ghost: 0.00% 0
Most Frequently Used Ghost: 0.00% 0
CACHE HITS BY DATA TYPE:
Demand Data: 71.40% 3.22m
Prefetch Data: 0.02% 725
Demand Metadata: 27.97% 1.26m
Prefetch Metadata: 0.62% 27.92k
CACHE MISSES BY DATA TYPE:
Demand Data: 31.81% 8.82k
Prefetch Data: 20.48% 5.68k
Demand Metadata: 21.99% 6.10k
Prefetch Metadata: 25.72% 7.13k
File-Level Prefetch: (HEALTHY)
DMU Efficiency: 36.39m
Hit Ratio: 93.36% 33.97m
Miss Ratio: 6.64% 2.42m
Colinear: 2.42m
Hit Ratio: 0.02% 505
Miss Ratio: 99.98% 2.42m
Stride: 33.94m
Hit Ratio: 100.00% 33.94m
Miss Ratio: 0.00% 14
DMU Misc:
Reclaim: 2.42m
Successes: 2.46% 59.51k
Failures: 97.54% 2.36m
Streams: 35.39k
+Resets: 0.05% 18
-Resets: 99.95% 35.37k
Bogus: 0
ZFS Tunable:
metaslab_debug_load 0
zfs_arc_min_prefetch_lifespan 0
zfetch_max_streams 8
zfs_nopwrite_enabled 1
zfetch_min_sec_reap 2
zfs_dbgmsg_enable 0
zfs_dirty_data_max_max_percent 25
zfs_arc_p_aggressive_disable 1
spa_load_verify_data 1
zfs_zevent_cols 80
zfs_dirty_data_max_percent 10
zfs_sync_pass_dont_compress 5
l2arc_write_max 8388608
zfs_vdev_scrub_max_active 2
zfs_vdev_sync_write_min_active 10
zvol_prefetch_bytes 131072
metaslab_aliquot 524288
zfs_no_scrub_prefetch 0
zfs_arc_shrink_shift 0
zfetch_block_cap 256
zfs_txg_history 0
zfs_delay_scale 500000
zfs_vdev_async_write_active_min_dirty_percent 30
metaslab_debug_unload 0
zfs_read_history 0
zvol_max_discard_blocks 16384
zfs_recover 0
l2arc_headroom 2
zfs_deadman_synctime_ms 1000000
zfs_scan_idle 50
zfs_free_min_time_ms 1000
zfs_dirty_data_max 1670300876
zfs_vdev_async_read_min_active 1
zfs_mg_noalloc_threshold 0
zfs_dedup_prefetch 0
zfs_vdev_max_active 1000
l2arc_write_boost 8388608
zfs_resilver_min_time_ms 3000
zfs_vdev_async_write_max_active 10
zil_slog_limit 1048576
zfs_prefetch_disable 0
zfs_resilver_delay 2
metaslab_lba_weighting_enabled 1
zfs_mg_fragmentation_threshold 85
l2arc_feed_again 1
zfs_zevent_console 0
zfs_immediate_write_sz 32768
zfs_dbgmsg_maxsize 4194304
zfs_free_leak_on_eio 0
zfs_deadman_enabled 1
metaslab_bias_enabled 1
zfs_arc_p_dampener_disable 1
zfs_object_mutex_size 64
zfs_metaslab_fragmentation_threshold 70
zfs_no_scrub_io 0
metaslabs_per_vdev 200
zfs_dbuf_state_index 0
zfs_vdev_sync_read_min_active 10
metaslab_fragmentation_factor_enabled 1
zvol_inhibit_dev 0
zfs_vdev_async_write_active_max_dirty_percent 60
zfs_vdev_cache_size 0
zfs_vdev_mirror_switch_us 10000
zfs_dirty_data_sync 67108864
spa_config_path /etc/zfs/zpool.cache
zfs_dirty_data_max_max 4175752192
zfs_arc_lotsfree_percent 10
zfs_zevent_len_max 128
zfs_scan_min_time_ms 1000
zfs_arc_sys_free 0
zfs_arc_meta_strategy 1
zfs_vdev_cache_bshift 16
zfs_arc_meta_adjust_restarts 4096
zfs_max_recordsize 1048576
zfs_vdev_scrub_min_active 1
zfs_vdev_read_gap_limit 32768
zfs_arc_meta_limit 0
zfs_vdev_sync_write_max_active 10
l2arc_norw 0
zfs_arc_meta_prune 10000
metaslab_preload_enabled 1
l2arc_nocompress 0
zvol_major 230
zfs_vdev_aggregation_limit 131072
zfs_flags 0
spa_asize_inflation 24
zfs_admin_snapshot 0
l2arc_feed_secs 1
zio_taskq_batch_pct 75
zfs_sync_pass_deferred_free 2
zfs_disable_dup_eviction 0
zfs_arc_grow_retry 0
zfs_read_history_hits 0
zfs_vdev_async_write_min_active 1
zfs_vdev_async_read_max_active 3
zfs_scrub_delay 4
zfs_delay_min_dirty_percent 60
zfs_free_max_blocks 100000
zfs_vdev_cache_max 16384
zio_delay_max 30000
zfs_top_maxinflight 32
spa_slop_shift 5
zfs_vdev_write_gap_limit 4096
spa_load_verify_metadata 1
spa_load_verify_maxinflight 10000
l2arc_noprefetch 1
zfs_vdev_scheduler noop
zfs_expire_snapshot 300
zfs_sync_pass_rewrite 2
zil_replay_disable 0
zfs_nocacheflush 0
zfs_arc_max 0
zfs_arc_min 0
zfs_read_chunk_size 1048576
zfs_txg_timeout 5
zfs_pd_bytes_max 52428800
l2arc_headroom_boost 200
zfs_send_corrupt_data 0
l2arc_feed_min_ms 200
zfs_arc_meta_min 0
zfs_arc_average_blocksize 8192
zfetch_array_rd_sz 1048576
zfs_autoimport_disable 1
zfs_arc_p_min_shift 0
zio_requeue_io_start_cut_in_line 1
zfs_vdev_sync_read_max_active 10
zfs_mdcomp_disable 0
zfs_arc_num_sublists_per_state 4
Both tools are well-documented and distributed upstream, see
https://github.com/zfsonlinux/zfs/blob/master/cmd/arcstat/arcstat.py
https://github.com/zfsonlinux/zfs/blob/master/cmd/arc_summary/arc_summary.py
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