Обсуждение: IpcMemoryCreate: shmget failed (Invalid argument)
I get this error when trying to start postgres with a block size > the default of 64... [postgres@roam pgsql]$ /usr/local/pgsql/bin/postmaster -B 2000 -D /usr/local/pgsql/data IpcMemoryCreate: shmget failed (Invalid argument) key=5432001, size=33652736, permission=600 This type of error is usually caused by an improper shared memory or System V IPC semaphore configuration. For more information, see the FAQ and platform-specific FAQ's in the source directory pgsql/doc or on our web site at http://www.postgresql.org. FATAL 1: ShmemCreate: cannot create region I am running PG 7.03, and I assume that you'll want to need to know my OS... [postgres@roam pgsql]$ uname -a Linux roam 2.2.14-5.0 #1 Tue Mar 7 21:07:39 EST 2000 i686 unknown (RedHat 6.2) Thanks. - JT ________________________________________ James Thornton, http://jamesthornton.com
James Thornton wrote: > I get this error when trying to start postgres with a block size > the > default of 64... > > [postgres@roam pgsql]$ /usr/local/pgsql/bin/postmaster -B 2000 -D > /usr/local/pgsql/data > IpcMemoryCreate: shmget failed (Invalid argument) key=5432001, > size=33652736, permission=600 > This type of error is usually caused by an improper > shared memory or System V IPC semaphore configuration. > For more information, see the FAQ and platform-specific > FAQ's in the source directory pgsql/doc or on our > web site at http://www.postgresql.org. > FATAL 1: ShmemCreate: cannot create region > > I am running PG 7.03, and I assume that you'll want to need to know my > OS... > > [postgres@roam pgsql]$ uname -a > Linux roam 2.2.14-5.0 #1 Tue Mar 7 21:07:39 EST 2000 i686 unknown > > (RedHat 6.2) I found the solution at http://www.ca.postgresql.org/devel-corner/docs/postgres/kernel-resources.html#SYSVIPC-PARAMETERS In a nutshell... (regarding GNU/Linux) The default shared memory limit (both SHMMAX and SHMALL) is 32 MB in 2.2 kernels, but it can be changed in the proc filesystem (without reboot). For example, to allow 128 MB: $ echo 134217728 >/proc/sys/kernel/shmall $ echo 134217728 >/proc/sys/kernel/shmmax NOTE: 134217728 = 128 * 1024 * 1024 You could put these commands into a script run at boot-time. Alternatively, you can use sysctl, if available, to control these parameters. Look for a file called /etc/sysctl.conf andadd lines like the following to it: kernel.shmall = 134217728 kernel.shmmax = 134217728 This file is usually processed at boot time, but sysctl can also be called explicitly later. Other parameters are sufficiently sized for any application. If you want to see for yourself look into /usr/src/linux/include/asm-xxx/shmparam.hand /usr/src/linux/include/linux/sem.h. - JT ________________________________________ James Thornton, http://jamesthornton.com
> I get this error when trying to start postgres with a block size > the > default of 64... > > [postgres@roam pgsql]$ /usr/local/pgsql/bin/postmaster -B 2000 -D > /usr/local/pgsql/data > IpcMemoryCreate: shmget failed (Invalid argument) key=5432001, > size=33652736, permission=600 > This type of error is usually caused by an improper > shared memory or System V IPC semaphore configuration. > For more information, see the FAQ and platform-specific > FAQ's in the source directory pgsql/doc or on our > web site at http://www.postgresql.org. > FATAL 1: ShmemCreate: cannot create region Perhaps someone should write a platform-specific FAQ for Linux that answers this question, so that the link provided would actually be useful. If there are no other takers, I'll volunteer. steve
> > Perhaps someone should write a platform-specific FAQ for Linux that > > answers this question, so that the link provided would actually be useful. > > http://www.ca.postgresql.org/devel-corner/docs/postgres/kernel-resources.h tml#SYSVIPC Perhaps it should be put in the platform-specific FAQ's, since that's where users are pointed when they get the error. steve
Steve Wolfe writes: > Perhaps someone should write a platform-specific FAQ for Linux that > answers this question, so that the link provided would actually be useful. http://www.ca.postgresql.org/devel-corner/docs/postgres/kernel-resources.html#SYSVIPC -- Peter Eisentraut peter_e@gmx.net http://funkturm.homeip.net/~peter
[ Charset ISO-8859-1 unsupported, converting... ] > > > Perhaps someone should write a platform-specific FAQ for Linux that > > > answers this question, so that the link provided would actually be > useful. > > > > > http://www.ca.postgresql.org/devel-corner/docs/postgres/kernel-resources.h > tml#SYSVIPC > > Perhaps it should be put in the platform-specific FAQ's, since that's > where users are pointed when they get the error. > But we moved all the platform-specific kernel stuff to the administrator's manual. I will update the error message. -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 853-3000 + If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania 19026
I just checked and 7.1 has the proper mention of the Administrator's Guide. [ Charset ISO-8859-1 unsupported, converting... ] > > > Perhaps someone should write a platform-specific FAQ for Linux that > > > answers this question, so that the link provided would actually be > useful. > > > > > http://www.ca.postgresql.org/devel-corner/docs/postgres/kernel-resources.h > tml#SYSVIPC > > Perhaps it should be put in the platform-specific FAQ's, since that's > where users are pointed when they get the error. > > steve > > > > ---------------------------(end of broadcast)--------------------------- > TIP 3: if posting/reading through Usenet, please send an appropriate > subscribe-nomail command to majordomo@postgresql.org so that your > message can get through to the mailing list cleanly > -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 853-3000 + If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania 19026