Re: [Veritas-bu] Linux Shared Memory Configuration
Greetings, I made the kernel parameter changes and they had no impact, so I decided to take a closer look at the errors. All of the errors were for backups and backup duplications of a single Windows client. I've been troubleshooting EXIT 14 backup failures on this client since May without any luck. For some reason, this client's EXIT 14 failures started leaving 1K disk buffer files on my media server storage unit in early September. My backup image duplication script does not check the validity of the backupid for files left in the disk storage unit path, so it attempts to duplicate a non-existent backupid. I've not yet compared my pre-change bptm/bpdm logs to see if the changes made any difference in empty buffer delays. -- Forwarded message -- Date: Tue, 19 Sep 2006 11:09:40 -0700 (PDT) From: Kathryn Hemness [EMAIL PROTECTED] To: Nardello, John [EMAIL PROTECTED] Cc: veritas-bu@mailman.eng.auburn.edu Subject: RE: [Veritas-bu] Linux Shared Memory Configuration Greetings, Thanks to all who respondedMost of the suggestions were helpful. This is a good technote and I'm going to try adjusting my values. Regarding bob944's comments, my Linux media servers ARE running with default kernel parameters and I'm seeing shared memory errors. The files in the /usr/openv/netbackup/db/config were recommended for both Solaris and Linux. It is for these reasons that I posted my query. I'm posting my current values for the parameters and indicating the recommended minimal settings in parenthesis: kernel.msgmnb = 16384 (65536) kernel.msgmni = 16(256) kernel.msgmax = 8192 (8192) kernel.shmmni = 4096 (1024) kernel.shmall = 2097152 (nothing indicated in document) kernel.shmmax = 33554432 (16777216) - my value is already larger, so I'm keeping it. kernel.sem = 25032000 32 128 (300 1024 32 1024) semmsl, semmns, semopm, semmni) My Linux servers have 4GB of memory so I can always make upward adjustments. On Tue, 19 Sep 2006, Nardello, John wrote: Date: Tue, 19 Sep 2006 08:21:59 -0700 From: Nardello, John [EMAIL PROTECTED] To: Kathryn Hemness [EMAIL PROTECTED], veritas-bu@mailman.eng.auburn.edu Subject: RE: [Veritas-bu] Linux Shared Memory Configuration Technote talking about Linux kernel tuning recommendations: http://support.veritas.com/docs/263755 A little old but I doubt the variables have changed any. - John Nardello -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Kathryn Hemness Sent: Monday, September 18, 2006 3:59 PM To: veritas-bu@mailman.eng.auburn.edu Subject: [Veritas-bu] Linux Shared Memory Configuration Greetings, My backup enterprise currently consists of a Solaris 9 Sun V240 master and 3 Sun X4200 RHEL3 Linux Media Servers running NB51MP5. I've been getting the following messages for backups and duplications to storage units on my Linux media servers: problems encountered during setup of shared memory (89) I use disk storage units and a mixed LTO2/LTO3 library. I've attempted to setup my Linux media servers similar to my Solaris 9 master by using the same NUMBER/SIZE_DATA_BUFFERS files in /usr/openv/netbackup/db/config. But on my Solaris 9 master, I also had /etc/system settings for msgsys, semsys, and shmsys values. I haven't been able to find anything about needing similar /etc/system tuning on Linux (I believe the /etc/system equivalents are set via the /etc/sysctl.conf file). I'm hoping someone can tell me if all of the /etc/system parameters can be set with sysctl on Linux and if their names are the same. Here are my current Solaris /etc/system parameters: set msgsys:msginfo_msgmap=512 set msgsys:msginfo_msgmax=8192 set msgsys:msginfo_msgmnb=65536 set msgsys:msginfo_msgmni=256 set msgsys:msginfo_msgssz=16 set msgsys:msginfo_msgtql=512 set msgsys:msginfo_msgseg=8192 set semsys:seminfo_semmap=64 set semsys:seminfo_semmni=1024 set semsys:seminfo_semmns=1024 set semsys:seminfo_semmnu=1024 set semsys:seminfo_semmsl=300 set semsys:seminfo_semopm=32 set semsys:seminfo_semume=64 set shmsys:shminfo_shmmax=536870912 set shmsys:shminfo_shmmin=1 set shmsys:shminfo_shmmni=220 set shmsys:shminfo_shmseg=100 Any help is appreciated. --Kathy ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu --Kathy ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] Linux Shared Memory Configuration
Not answering you question but if you media server is writing to disk you might want to check and implement SIZE_DATA_BUFFERS_DISK Dave -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Kathryn Hemness Sent: 18 September 2006 23:59 To: veritas-bu@mailman.eng.auburn.edu Subject: [Veritas-bu] Linux Shared Memory Configuration Greetings, My backup enterprise currently consists of a Solaris 9 Sun V240 master and 3 Sun X4200 RHEL3 Linux Media Servers running NB51MP5. I've been getting the following messages for backups and duplications to storage units on my Linux media servers: problems encountered during setup of shared memory (89) I use disk storage units and a mixed LTO2/LTO3 library. I've attempted to setup my Linux media servers similar to my Solaris 9 master by using the same NUMBER/SIZE_DATA_BUFFERS files in /usr/openv/netbackup/db/config. But on my Solaris 9 master, I also had /etc/system settings for msgsys, semsys, and shmsys values. I haven't been able to find anything about needing similar /etc/system tuning on Linux (I believe the /etc/system equivalents are set via the /etc/sysctl.conf file). I'm hoping someone can tell me if all of the /etc/system parameters can be set with sysctl on Linux and if their names are the same. Here are my current Solaris /etc/system parameters: set msgsys:msginfo_msgmap=512 set msgsys:msginfo_msgmax=8192 set msgsys:msginfo_msgmnb=65536 set msgsys:msginfo_msgmni=256 set msgsys:msginfo_msgssz=16 set msgsys:msginfo_msgtql=512 set msgsys:msginfo_msgseg=8192 set semsys:seminfo_semmap=64 set semsys:seminfo_semmni=1024 set semsys:seminfo_semmns=1024 set semsys:seminfo_semmnu=1024 set semsys:seminfo_semmsl=300 set semsys:seminfo_semopm=32 set semsys:seminfo_semume=64 set shmsys:shminfo_shmmax=536870912 set shmsys:shminfo_shmmin=1 set shmsys:shminfo_shmmni=220 set shmsys:shminfo_shmseg=100 Any help is appreciated. --Kathy ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu Notice to recipient: The information in this internet e-mail and any attachments is confidential and may be privileged. It is intended solely for the addressee. If you are not the intended addressee please notify the sender immediately by telephone. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. When addressed to external clients any opinions or advice contained in this internet e-mail are subject to the terms and conditions expressed in any applicable governing terms of business or client engagement letter issued by the pertinent Bank of America group entity. If this email originates from the U.K. please note that Bank of America, N.A., London Branch and Banc of America Securities Limited are authorised and regulated by the Financial Services Authority. ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] Linux Shared Memory Configuration
/etc/sysctl.conf is the correct file. You can learn more about it by reading the man page for it and also the one for sysctl. The available parameters are in /proc/sys/kernel. You can cat each of these to see current value (assuming they are using defaults not shown in sysctl.conf). There are shm and sem parameters (e.g. shmmax) but they are not exactly the same. You should focus on the shm parameters given the message you're seeing. Note: RHEL 3 is 32 bit. You can only set shmmax to 4 GB - 1 byte at most. (4 GB is maximum but if you set it to that it actually goes back to 0 so you have to subtract the 1 byte). Even with that the best you'll get is 1.6 GB without doing some extra magic. Unfortunately since the fibre on Linux didn't understand our fibre bridges we never set up Linux as a media server so I can't tell you what the settings should be. Just wanted to offer the confirmation you asked for about sysctl.conf and a little more info. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Kathryn Hemness Sent: Monday, September 18, 2006 6:59 PM To: veritas-bu@mailman.eng.auburn.edu Subject: [Veritas-bu] Linux Shared Memory Configuration Greetings, My backup enterprise currently consists of a Solaris 9 Sun V240 master and 3 Sun X4200 RHEL3 Linux Media Servers running NB51MP5. I've been getting the following messages for backups and duplications to storage units on my Linux media servers: problems encountered during setup of shared memory (89) I use disk storage units and a mixed LTO2/LTO3 library. I've attempted to setup my Linux media servers similar to my Solaris 9 master by using the same NUMBER/SIZE_DATA_BUFFERS files in /usr/openv/netbackup/db/config. But on my Solaris 9 master, I also had /etc/system settings for msgsys, semsys, and shmsys values. I haven't been able to find anything about needing similar /etc/system tuning on Linux (I believe the /etc/system equivalents are set via the /etc/sysctl.conf file). I'm hoping someone can tell me if all of the /etc/system parameters can be set with sysctl on Linux and if their names are the same. Here are my current Solaris /etc/system parameters: set msgsys:msginfo_msgmap=512 set msgsys:msginfo_msgmax=8192 set msgsys:msginfo_msgmnb=65536 set msgsys:msginfo_msgmni=256 set msgsys:msginfo_msgssz=16 set msgsys:msginfo_msgtql=512 set msgsys:msginfo_msgseg=8192 set semsys:seminfo_semmap=64 set semsys:seminfo_semmni=1024 set semsys:seminfo_semmns=1024 set semsys:seminfo_semmnu=1024 set semsys:seminfo_semmsl=300 set semsys:seminfo_semopm=32 set semsys:seminfo_semume=64 set shmsys:shminfo_shmmax=536870912 set shmsys:shminfo_shmmin=1 set shmsys:shminfo_shmmni=220 set shmsys:shminfo_shmseg=100 Any help is appreciated. --Kathy ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] Linux Shared Memory Configuration
My backup enterprise currently consists of a Solaris 9 Sun V240 master and 3 Sun X4200 RHEL3 Linux Media Servers running NB51MP5. I've been getting the following messages for backups and duplications to storage units on my Linux media servers: problems encountered during setup of shared memory (89) I use disk storage units and a mixed LTO2/LTO3 library. I've attempted to setup my Linux media servers similar to my Solaris 9 master by using the same NUMBER/SIZE_DATA_BUFFERS files in /usr/openv/netbackup/db/config. But on my Solaris 9 master, I also had /etc/system settings for msgsys, semsys, and shmsys values. Why would you assume that tuning parameters for one OS and hardware platform were correct for a different OS on a different hardware platform? And the odds are reasonable that the master's parameters weren't well-chosen in the first place. Suggest a) apply the Linux parameter information from a later posting (Lightner) b) remove the touch files and let the defaults get backups working c) if you're not satisfied with the backup AND RESTORE performance with the defaults, read the Backup Planning and Performance Tuning Guide and tune your media server properly. OPPs (Other Peoples' Parameters, not the Canadian version), derived with unknown methodology on likely different software, different hardware and different configurations, have even less value than your Sol9 box's parameters. ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] Linux Shared Memory Configuration
Technote talking about Linux kernel tuning recommendations: http://support.veritas.com/docs/263755 A little old but I doubt the variables have changed any. - John Nardello -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Kathryn Hemness Sent: Monday, September 18, 2006 3:59 PM To: veritas-bu@mailman.eng.auburn.edu Subject: [Veritas-bu] Linux Shared Memory Configuration Greetings, My backup enterprise currently consists of a Solaris 9 Sun V240 master and 3 Sun X4200 RHEL3 Linux Media Servers running NB51MP5. I've been getting the following messages for backups and duplications to storage units on my Linux media servers: problems encountered during setup of shared memory (89) I use disk storage units and a mixed LTO2/LTO3 library. I've attempted to setup my Linux media servers similar to my Solaris 9 master by using the same NUMBER/SIZE_DATA_BUFFERS files in /usr/openv/netbackup/db/config. But on my Solaris 9 master, I also had /etc/system settings for msgsys, semsys, and shmsys values. I haven't been able to find anything about needing similar /etc/system tuning on Linux (I believe the /etc/system equivalents are set via the /etc/sysctl.conf file). I'm hoping someone can tell me if all of the /etc/system parameters can be set with sysctl on Linux and if their names are the same. Here are my current Solaris /etc/system parameters: set msgsys:msginfo_msgmap=512 set msgsys:msginfo_msgmax=8192 set msgsys:msginfo_msgmnb=65536 set msgsys:msginfo_msgmni=256 set msgsys:msginfo_msgssz=16 set msgsys:msginfo_msgtql=512 set msgsys:msginfo_msgseg=8192 set semsys:seminfo_semmap=64 set semsys:seminfo_semmni=1024 set semsys:seminfo_semmns=1024 set semsys:seminfo_semmnu=1024 set semsys:seminfo_semmsl=300 set semsys:seminfo_semopm=32 set semsys:seminfo_semume=64 set shmsys:shminfo_shmmax=536870912 set shmsys:shminfo_shmmin=1 set shmsys:shminfo_shmmni=220 set shmsys:shminfo_shmseg=100 Any help is appreciated. --Kathy ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] Linux Shared Memory Configuration
Thanks Dave, I do have that too...I just short-cutted my explanation of the files in my /usr/openv/netbackup/db/config directory. On Tue, 19 Sep 2006, Clooney, David wrote: Date: Tue, 19 Sep 2006 11:56:05 +0100 From: Clooney, David [EMAIL PROTECTED] To: Kathryn Hemness [EMAIL PROTECTED], veritas-bu@mailman.eng.auburn.edu Subject: RE: [Veritas-bu] Linux Shared Memory Configuration Not answering you question but if you media server is writing to disk you might want to check and implement SIZE_DATA_BUFFERS_DISK Dave -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Kathryn Hemness Sent: 18 September 2006 23:59 To: veritas-bu@mailman.eng.auburn.edu Subject: [Veritas-bu] Linux Shared Memory Configuration Greetings, My backup enterprise currently consists of a Solaris 9 Sun V240 master and 3 Sun X4200 RHEL3 Linux Media Servers running NB51MP5. I've been getting the following messages for backups and duplications to storage units on my Linux media servers: problems encountered during setup of shared memory (89) I use disk storage units and a mixed LTO2/LTO3 library. I've attempted to setup my Linux media servers similar to my Solaris 9 master by using the same NUMBER/SIZE_DATA_BUFFERS files in /usr/openv/netbackup/db/config. But on my Solaris 9 master, I also had /etc/system settings for msgsys, semsys, and shmsys values. I haven't been able to find anything about needing similar /etc/system tuning on Linux (I believe the /etc/system equivalents are set via the /etc/sysctl.conf file). I'm hoping someone can tell me if all of the /etc/system parameters can be set with sysctl on Linux and if their names are the same. Here are my current Solaris /etc/system parameters: set msgsys:msginfo_msgmap=512 set msgsys:msginfo_msgmax=8192 set msgsys:msginfo_msgmnb=65536 set msgsys:msginfo_msgmni=256 set msgsys:msginfo_msgssz=16 set msgsys:msginfo_msgtql=512 set msgsys:msginfo_msgseg=8192 set semsys:seminfo_semmap=64 set semsys:seminfo_semmni=1024 set semsys:seminfo_semmns=1024 set semsys:seminfo_semmnu=1024 set semsys:seminfo_semmsl=300 set semsys:seminfo_semopm=32 set semsys:seminfo_semume=64 set shmsys:shminfo_shmmax=536870912 set shmsys:shminfo_shmmin=1 set shmsys:shminfo_shmmni=220 set shmsys:shminfo_shmseg=100 Any help is appreciated. --Kathy ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu Notice to recipient: The information in this internet e-mail and any attachments is confidential and may be privileged. It is intended solely for the addressee. If you are not the intended addressee please notify the sender immediately by telephone. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. When addressed to external clients any opinions or advice contained in this internet e-mail are subject to the terms and conditions expressed in any applicable governing terms of business or client engagement letter issued by the pertinent Bank of America group entity. If this email originates from the U.K. please note that Bank of America, N.A., London Branch and Banc of America Securities Limited are authorised and regulated by the Financial Services Authority. --Kathy ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] Linux Shared Memory Configuration
Greetings, Thanks to all who respondedMost of the suggestions were helpful. This is a good technote and I'm going to try adjusting my values. Regarding bob944's comments, my Linux media servers ARE running with default kernel parameters and I'm seeing shared memory errors. The files in the /usr/openv/netbackup/db/config were recommended for both Solaris and Linux. It is for these reasons that I posted my query. I'm posting my current values for the parameters and indicating the recommended minimal settings in parenthesis: kernel.msgmnb = 16384 (65536) kernel.msgmni = 16(256) kernel.msgmax = 8192 (8192) kernel.shmmni = 4096 (1024) kernel.shmall = 2097152 (nothing indicated in document) kernel.shmmax = 33554432 (16777216) - my value is already larger, so I'm keeping it. kernel.sem = 25032000 32 128 (300 1024 32 1024) semmsl, semmns, semopm, semmni) My Linux servers have 4GB of memory so I can always make upward adjustments. On Tue, 19 Sep 2006, Nardello, John wrote: Date: Tue, 19 Sep 2006 08:21:59 -0700 From: Nardello, John [EMAIL PROTECTED] To: Kathryn Hemness [EMAIL PROTECTED], veritas-bu@mailman.eng.auburn.edu Subject: RE: [Veritas-bu] Linux Shared Memory Configuration Technote talking about Linux kernel tuning recommendations: http://support.veritas.com/docs/263755 A little old but I doubt the variables have changed any. - John Nardello -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Kathryn Hemness Sent: Monday, September 18, 2006 3:59 PM To: veritas-bu@mailman.eng.auburn.edu Subject: [Veritas-bu] Linux Shared Memory Configuration Greetings, My backup enterprise currently consists of a Solaris 9 Sun V240 master and 3 Sun X4200 RHEL3 Linux Media Servers running NB51MP5. I've been getting the following messages for backups and duplications to storage units on my Linux media servers: problems encountered during setup of shared memory (89) I use disk storage units and a mixed LTO2/LTO3 library. I've attempted to setup my Linux media servers similar to my Solaris 9 master by using the same NUMBER/SIZE_DATA_BUFFERS files in /usr/openv/netbackup/db/config. But on my Solaris 9 master, I also had /etc/system settings for msgsys, semsys, and shmsys values. I haven't been able to find anything about needing similar /etc/system tuning on Linux (I believe the /etc/system equivalents are set via the /etc/sysctl.conf file). I'm hoping someone can tell me if all of the /etc/system parameters can be set with sysctl on Linux and if their names are the same. Here are my current Solaris /etc/system parameters: set msgsys:msginfo_msgmap=512 set msgsys:msginfo_msgmax=8192 set msgsys:msginfo_msgmnb=65536 set msgsys:msginfo_msgmni=256 set msgsys:msginfo_msgssz=16 set msgsys:msginfo_msgtql=512 set msgsys:msginfo_msgseg=8192 set semsys:seminfo_semmap=64 set semsys:seminfo_semmni=1024 set semsys:seminfo_semmns=1024 set semsys:seminfo_semmnu=1024 set semsys:seminfo_semmsl=300 set semsys:seminfo_semopm=32 set semsys:seminfo_semume=64 set shmsys:shminfo_shmmax=536870912 set shmsys:shminfo_shmmin=1 set shmsys:shminfo_shmmni=220 set shmsys:shminfo_shmseg=100 Any help is appreciated. --Kathy ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu --Kathy ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] Linux Shared Memory Configuration
Your max shared memory shmmax value should be at minimum: NUMBER_DATA_BUFFERS x SIZE_DATA_BUFFERS x number of tape drives x max multiplex I don't have the doc readily available to cite, but in essence, If you have late model drives that are using a 256k buffer, and you have 4 connected drives, and you multiplex 4 streams per drive, and have 64 buffers configured, then you should have a shmmax of: 262144 x 64 x 4 x 4 = 268435456 Paul -- -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Kathryn Hemness Sent: September 19, 2006 2:10 PM To: Nardello, John Cc: veritas-bu@mailman.eng.auburn.edu Subject: Re: [Veritas-bu] Linux Shared Memory Configuration Greetings, Thanks to all who respondedMost of the suggestions were helpful. This is a good technote and I'm going to try adjusting my values. Regarding bob944's comments, my Linux media servers ARE running with default kernel parameters and I'm seeing shared memory errors. The files in the /usr/openv/netbackup/db/config were recommended for both Solaris and Linux. It is for these reasons that I posted my query. I'm posting my current values for the parameters and indicating the recommended minimal settings in parenthesis: kernel.msgmnb = 16384 (65536) kernel.msgmni = 16(256) kernel.msgmax = 8192 (8192) kernel.shmmni = 4096 (1024) kernel.shmall = 2097152 (nothing indicated in document) kernel.shmmax = 33554432 (16777216) - my value is already larger, so I'm keeping it. kernel.sem = 25032000 32 128 (300 1024 32 1024) semmsl, semmns, semopm, semmni) My Linux servers have 4GB of memory so I can always make upward adjustments. On Tue, 19 Sep 2006, Nardello, John wrote: Date: Tue, 19 Sep 2006 08:21:59 -0700 From: Nardello, John [EMAIL PROTECTED] To: Kathryn Hemness [EMAIL PROTECTED], veritas-bu@mailman.eng.auburn.edu Subject: RE: [Veritas-bu] Linux Shared Memory Configuration Technote talking about Linux kernel tuning recommendations: http://support.veritas.com/docs/263755 A little old but I doubt the variables have changed any. - John Nardello -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Kathryn Hemness Sent: Monday, September 18, 2006 3:59 PM To: veritas-bu@mailman.eng.auburn.edu Subject: [Veritas-bu] Linux Shared Memory Configuration Greetings, My backup enterprise currently consists of a Solaris 9 Sun V240 master and 3 Sun X4200 RHEL3 Linux Media Servers running NB51MP5. I've been getting the following messages for backups and duplications to storage units on my Linux media servers: problems encountered during setup of shared memory (89) I use disk storage units and a mixed LTO2/LTO3 library. I've attempted to setup my Linux media servers similar to my Solaris 9 master by using the same NUMBER/SIZE_DATA_BUFFERS files in /usr/openv/netbackup/db/config. But on my Solaris 9 master, I also had /etc/system settings for msgsys, semsys, and shmsys values. I haven't been able to find anything about needing similar /etc/system tuning on Linux (I believe the /etc/system equivalents are set via the /etc/sysctl.conf file). I'm hoping someone can tell me if all of the /etc/system parameters can be set with sysctl on Linux and if their names are the same. Here are my current Solaris /etc/system parameters: set msgsys:msginfo_msgmap=512 set msgsys:msginfo_msgmax=8192 set msgsys:msginfo_msgmnb=65536 set msgsys:msginfo_msgmni=256 set msgsys:msginfo_msgssz=16 set msgsys:msginfo_msgtql=512 set msgsys:msginfo_msgseg=8192 set semsys:seminfo_semmap=64 set semsys:seminfo_semmni=1024 set semsys:seminfo_semmns=1024 set semsys:seminfo_semmnu=1024 set semsys:seminfo_semmsl=300 set semsys:seminfo_semopm=32 set semsys:seminfo_semume=64 set shmsys:shminfo_shmmax=536870912 set shmsys:shminfo_shmmin=1 set shmsys:shminfo_shmmni=220 set shmsys:shminfo_shmseg=100 Any help is appreciated. --Kathy ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu --Kathy ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu La version française suit le texte anglais. This email may contain privileged and/or confidential information, and the Bank of Canada does not waive any related rights. Any distribution, use, or copying of this email or the information it contains by other than the intended recipient
Re: [Veritas-bu] Linux Shared Memory Configuration
This is a good technote and I'm going to try adjusting my values. Regarding bob944's comments, my Linux media servers ARE running with default kernel parameters and I'm seeing shared memory errors. The files in the /usr/openv/netbackup/db/config were recommended for both Solaris and Linux. It is for these reasons that I posted my query. You missed the point, or perhaps I didn't make it clearly. You said you copied the SIZE/NUMBER_DATA_BUFFERS from the Sol9 system to the Linux one. These--the tuning parameters--are what is causing your status 89s. Remove the BUFFER forcing, let NetBackup use its defaults, backups will run. Again, RTFM is suggested so you understand the consequences of what you are changing. ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
