Date: Fri, 08 Jul 2011 00:22:01 +0300 From: Volodymyr Kostyrko <c.kworr@gmail.com> To: freebsd-fs@freebsd.org Subject: everlasting log device Message-ID: <iv581p$8bv$1@dough.gmane.org>
next in thread | raw e-mail | index | archive | help
Hi all.
When I get my hands on SSD device I tried to setup a log/cache partition
for my pools. Everything works fine until one day I realized that I have
a better place to stick this SSD in. I have upgraded system from
RELENG_8_2 to RELENG_8 and tried to remove devices. From my two pools
one was successfully freed from log/cache devices yet another one
refuses to live without log device:
# zpool upgrade
This system is currently running ZFS pool version 28.
All pools are formatted using this version.
# zfs upgrade
This system is currently running ZFS filesystem version 5.
All filesystems are formatted with the current version.
# zpool status
pool: utwig
state: DEGRADED
status: One or more devices could not be opened. Sufficient replicas
exist for
the pool to continue functioning in a degraded state.
action: Attach the missing device and online it using 'zpool online'.
see: http://www.sun.com/msg/ZFS-8000-2Q
scan: resilvered 0 in 0h21m with 0 errors on Sat Jul 2 15:07:35 2011
config:
NAME STATE READ
WRITE CKSUM
utwig DEGRADED 0
0 0
mirror-0 ONLINE 0
0 0
gptid/ecb17af1-9119-11df-bb0b-00304f4e6d80 ONLINE 0
0 0
gptid/03aed1f5-95a3-11df-bb0b-00304f4e6d80 ONLINE 0
0 0
logs
gptid/231b9002-a4a5-11e0-a114-3f386a87752c UNAVAIL 0
0 0 cannot open
errors: No known data errors
pool: utwig-sas
state: ONLINE
scan: none requested
config:
NAME STATE READ WRITE CKSUM
utwig-sas ONLINE 0 0 0
mirror-0 ONLINE 0 0 0
aacd1 ONLINE 0 0 0
aacd2 ONLINE 0 0 0
errors: No known data errors
# zpool remove utwig gptid/231b9002-a4a5-11e0-a114-3f386a87752c && echo good
good
And nothing changes - system needs that partition.
One more weird thing.
# zpool iostat -v utwig
capacity operations
bandwidth
pool alloc free read write
read write
-------------------------------------- ----- ----- ----- -----
----- -----
utwig 284G 172G 41 70
272K 793K
mirror 284G 172G 41 70
272K 793K
gptid/ecb17af1-9119-11df-bb0b-00304f4e6d80 - - 8
27 456K 794K
gptid/03aed1f5-95a3-11df-bb0b-00304f4e6d80 - - 8
27 459K 794K
gptid/231b9002-a4a5-11e0-a114-3f386a87752c 148K 3,97G 0
0 0 0
-------------------------------------- ----- ----- ----- -----
----- -----
System claims that this log device has 148K data. Is this the size of
unwritten data? The number is still the same when booting into single
user mode and doesn't change at all.
Can I remove this log device? Should I recreate the pool to get rid of
this behavior?
--
Sphinx of black quartz judge my vow.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?iv581p$8bv$1>