Re: [ceph-users] SAS-Exp 9300-8i or Raid-Contr 9750-4i ?
I'm not sure if the megacli tools will work with your model, it would have to be tested. They tend to be able to control LSI RAID controllers to varying degrees. The advantage of using JBOD mode vs raid-single-disk is that you may run into issues when swapping drives, the drive letters may change. Also, JBOD mode removes a layer of operational complexity. Thanks, Jacob -Original Message- From: Markus Goldberg [mailto:goldb...@uni-hildesheim.de] Sent: Friday, April 24, 2015 5:15 AM To: Weeks, Jacob (RIS-BCT); ceph-users@lists.ceph.com Subject: Re: [ceph-users] SAS-Exp 9300-8i or Raid-Contr 9750-4i ? Hi Jacob, are you sure, that megacli is correct for the 9750-4i (not 9750-4i4e) ? The 9750-4i is not in the list of supported devices. btw, what makes the difference between jbod and raid-single-disk? Thanks, Markus Am 23.04.2015 um 13:32 schrieb Weeks, Jacob (RIS-BCT): The 9750-4i may support JBOD mode. If you would like to test, install the MegaCLI tools. (Warning, this will clear the RAID configuration on your device) This is the command for switching the RAID controller to JBOD mode: #megacli -AdpSetProp -EnableJBOD -1 -aAll Thanks, Jacob -Original Message- From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of Markus Goldberg Sent: Thursday, April 23, 2015 5:41 AM To: ceph-users@lists.ceph.com Subject: [ceph-users] SAS-Exp 9300-8i or Raid-Contr 9750-4i ? Hi, i will upgrade my existing Hardware (in 3 SC847-cases with 30 HDDs each) the next days. Should i buy a SAS-Expander 9300-8i or keep my existing Raid-Contr 9750-4i. The 9300 will give me real Jbod , the 9750 only single-disk Raids. Does this make a real difference ? Should i spend or keep money? -- MfG, Markus Goldberg -- Markus Goldberg Universität Hildesheim Rechenzentrum Tel +49 5121 88392822 Universitätsplatz 1, D-31141 Hildesheim, Germany Fax +49 5121 88392823 email goldb...@uni-hildesheim.de -- ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com The information contained in this e-mail message is intended only for the personal and confidential use of the recipient(s) named above. This message may be an attorney-client communication and/or work product and as such is privileged and confidential. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this document in error and that any review, dissemination, distribution, or copying of this message is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail, and delete the original message. -- MfG, Markus Goldberg -- Markus Goldberg Universität Hildesheim Rechenzentrum Tel +49 5121 88392822 Universitätsplatz 1, D-31141 Hildesheim, Germany Fax +49 5121 88392823 email goldb...@uni-hildesheim.de -- The information contained in this e-mail message is intended only for the personal and confidential use of the recipient(s) named above. This message may be an attorney-client communication and/or work product and as such is privileged and confidential. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this document in error and that any review, dissemination, distribution, or copying of this message is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail, and delete the original message. ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
Re: [ceph-users] SAS-Exp 9300-8i or Raid-Contr 9750-4i ?
The 9750-4i may support JBOD mode. If you would like to test, install the MegaCLI tools. (Warning, this will clear the RAID configuration on your device) This is the command for switching the RAID controller to JBOD mode: #megacli -AdpSetProp -EnableJBOD -1 -aAll Thanks, Jacob -Original Message- From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of Markus Goldberg Sent: Thursday, April 23, 2015 5:41 AM To: ceph-users@lists.ceph.com Subject: [ceph-users] SAS-Exp 9300-8i or Raid-Contr 9750-4i ? Hi, i will upgrade my existing Hardware (in 3 SC847-cases with 30 HDDs each) the next days. Should i buy a SAS-Expander 9300-8i or keep my existing Raid-Contr 9750-4i. The 9300 will give me real Jbod , the 9750 only single-disk Raids. Does this make a real difference ? Should i spend or keep money? -- MfG, Markus Goldberg -- Markus Goldberg Universität Hildesheim Rechenzentrum Tel +49 5121 88392822 Universitätsplatz 1, D-31141 Hildesheim, Germany Fax +49 5121 88392823 email goldb...@uni-hildesheim.de -- ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com The information contained in this e-mail message is intended only for the personal and confidential use of the recipient(s) named above. This message may be an attorney-client communication and/or work product and as such is privileged and confidential. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this document in error and that any review, dissemination, distribution, or copying of this message is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail, and delete the original message. ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
Re: [ceph-users] increase pg num
I am not sure about v0.80.6-1 but in v0.80.7 the --allow-experimental-feature
option is not required. I have increased pg_num and pgp_num in v0.80.7
without any issues.
on how big cluster, how long did it take to recovery from this change?
The largest pool was roughly 200TB.
It took less than 30 minutes.
I took a look at the changelog between the version you're running and the
version I performed this change on, as far as I can tell, nothing was changed
that made this feature non-experimental.
http://ceph.com/docs/master/release-notes/
It may be safer to make the change incrementally rather than all at once.
Since v0.72, ceph does not allow extreme changes in pg_num sizes.
It make sense, thanks.
Thanks,
Jacob
From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of tombo
Sent: Tuesday, March 10, 2015 2:41 PM
To: ceph-us...@ceph.com
Subject: [ceph-users] increase pg num
Hello,
I'm running debian 8 with ceph 0.80.6-1 firefly in production and I need to
double the count of pgs. I've found that it was experimantal feature, is it
safe now?
Is there still --allow-experimental-feature switch for ceph osd pool set
{pool-name} pg_num {pg_num} command ?
Thanks
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Re: [ceph-users] increase pg num
I am not sure about v0.80.6-1 but in v0.80.7 the --allow-experimental-feature
option is not required. I have increased pg_num and pgp_num in v0.80.7 without
any issues.
It may be safer to make the change incrementally rather than all at once. Since
v0.72, ceph does not allow extreme changes in pg_num sizes.
Thanks,
Jacob
From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of tombo
Sent: Tuesday, March 10, 2015 2:41 PM
To: ceph-us...@ceph.com
Subject: [ceph-users] increase pg num
Hello,
I'm running debian 8 with ceph 0.80.6-1 firefly in production and I need to
double the count of pgs. I've found that it was experimantal feature, is it
safe now?
Is there still --allow-experimental-feature switch for ceph osd pool set
{pool-name} pg_num {pg_num} command ?
Thanks
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recipient(s) named above. This message may be an attorney-client communication
and/or work product and as such is privileged and confidential. If the reader
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delivering it to the intended recipient, you are hereby notified that you have
received this document in error and that any review, dissemination,
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Re: [ceph-users] Help needed
There should be a *.client.admin.keyring file in the directory you were in while you ran ceph-deploy. Try copying that file to /etc/ceph/ Thanks, Jacob From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of SUNDAY A. OLUTAYO Sent: Tuesday, February 17, 2015 3:39 PM To: ceph-users@lists.ceph.com; ceph-de...@lists.ceph.com; maintain...@lists.ceph.com Subject: [ceph-users] Help needed I am setting up a ceph cluster on Ubuntu 14.04.1 LTS, all went well without error but the ceph status after ceph-deploy mon create-initial indecate otherwise This is the error message; monclient[hunting]: Error: missing keyring cannot use cephx for authentication librados: client.admin initialization error No such file or directory Thankd, Sunday Olutayo The information contained in this e-mail message is intended only for the personal and confidential use of the recipient(s) named above. This message may be an attorney-client communication and/or work product and as such is privileged and confidential. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this document in error and that any review, dissemination, distribution, or copying of this message is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail, and delete the original message. ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
