I'm trying to automate the resync process after a mirror replacement on Solaris. To avoid resyncing all the drives at once, I'm trying to use metastat for each drive to determine if the drive is still resyncing or if it is done (Okay). The following test lines seem to always show false, while removing the "!" always shows true. In other words, it doesn't translate "Resyncing" or Okay" into true/false results:
Code:
While !(metastat d1 | grep "Resyncing" | wc -l | cut -f1 -d' '; do echo ResyncFound; sleep 5; done
Code:
While !(metastat d1 | grep "Okay" | wc -l | cut -f1 -d' '; do echo Okay; sleep 5; done
Any ideas on how to translate "Resyncing" into true?
Moderator's Comments:
Please use CODE tags as required by forum rules!
Last edited by RudiC; 09-28-2017 at 12:00 PM..
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LEARN ABOUT LINUX
metasync
metasync(1M) System Administration Commands metasync(1M)NAME
metasync - handle metadevice resync during reboot
SYNOPSIS
/usr/sbin/metasync -h
/usr/sbin/metasync [-s setname] [buffer_size] metadevice
/usr/sbin/metasync [-s setname] -r [buffer_size]
/usr/sbin/metasync -p metadevice
DESCRIPTION
The metasync command starts a resync operation on the specified metadevice. All components that need to be resynced are resynced. If the
system crashes during a RAID5 initialization, or during a RAID5 resync, either an initialization or resync restarts when the system
reboots.
Applications are free to access a metadevice at the same time that it is being resynced by metasync. Also, metasync performs the copy oper-
ations from inside the kernel, which makes the utility more efficient.
Use the -r option in boot scripts to resync all possible submirrors.
OPTIONS
The following options are supported:
-h Displays usage message.
-p metadevice Regenerates parity information for RAID5 metadevices.
-s setname Specifies the name of the diskset on which metasync will work. Using the -s option will cause the command to perform its
administrative function within the specified diskset. Without this option, the command will perform its function on local
metadevices.
-r Specifies that the metasync command handle special resync requirements during a system reboot. metasync -r should only be
invoked from the svc:/system/mdmonitor service. The metasync command only resyncs those metadevices that need to be
resynced. metasync schedules all the mirror resyncs according to their pass numbers.
To override the default buffer_size value used by the svc:/system/mdmonitor service, you can edit /etc/system to specify:
set md_mirror:md_resync_bufsz = 2048
so that resyncs occur as quickly as possible.
OPERANDS
buffer_size Specifies the size (number of 512-byte disk blocks) of the internal copy buffer for the mirror resync. The size
defaults to 128 512-byte disk blocks (64 Kbytes). It can be no more than 2048 blocks. For best performance (quick-
est completion of the resync), 2048 blocks is the recommended size.
EXIT STATUS
The following exit values are returned:
0 Successful completion.
>0 An error occurred.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWmdu |
+-----------------------------+-----------------------------+
SEE ALSO mdmonitord(1M), metaclear(1M), metadb(1M), metadetach(1M), metahs(1M), metainit(1M), metaoffline(1M), metaonline(1M), metaparam(1M),
metarecover(1M), metarename(1M), metareplace(1M), metaroot(1M), metaset(1M), metassist(1M), metastat(1M), metattach(1M), md.tab(4),
md.cf(4), mddb.cf(4), md.tab(4), attributes(5), md(7D)
Solaris Volume Manager Administration Guide
NOTES
The metasync service is managed by the service management facility, smf(5), under the service identifier:
svc:/system/mdmonitor
Administrative actions on this service, such as enabling, disabling, or requesting restart, can be performed using svcadm(1M). The ser-
vice's status can be queried using the svcs(1) command.
SunOS 5.10 24 Nov 2004 metasync(1M)
09-28-2017
