nndocs:iscsi
Differences
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| Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
| nndocs:iscsi [2024/12/13 20:01] – unify IQNs naptastic | nndocs:iscsi [2025/01/03 02:32] (current) – [Initiator] naptastic | ||
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| Line 29: | Line 29: | ||
| # iscsiadm -m session | # iscsiadm -m session | ||
| - | tcp: [1] 172.21.0.80: | + | tcp: [1] 172.20.0.80: |
| The session number (sid) is the 1 in brackets. | The session number (sid) is the 1 in brackets. | ||
| ===Use iSER instead of TCP (initiator side)=== | ===Use iSER instead of TCP (initiator side)=== | ||
| - | If performance is poor, the initiator may have logged in using TCP instead of iSER. In my testing, to a ramdisk over IB, TCP got ~520 MiB/s, where iSER got 1.9 GiB/s. | + | If performance is poor, the initiator may have logged in using TCP instead of iSER. In my testing, to a ramdisk over IB, TCP got ~520 MiB/s, where with iSER I have gotten 3.2 GB/s. |
| You know you got TCP if dmesg describes your LUN like this: | You know you got TCP if dmesg describes your LUN like this: | ||
| Line 49: | Line 49: | ||
| [123.45678] scsi host1: iSCSI Initiator over iSER | [123.45678] scsi host1: iSCSI Initiator over iSER | ||
| [123.45678] scsi 1:0:0:0: Direct-Access | [123.45678] scsi 1:0:0:0: Direct-Access | ||
| - | |||
| - | FDR InfiniBand should be able to move over 6 GB/s of traffic. 1.9 GiB/s is nothing to be sad about. | ||
| ===Rescan after the target adds a LUN=== | ===Rescan after the target adds a LUN=== | ||
| # iscsiadm -m session --sid=1 --rescan | # iscsiadm -m session --sid=1 --rescan | ||
| - | Rescanning session [sid: 1, target: iqn.2014-08.rocks.narf.southpark, | + | Rescanning session [sid: 1, target: iqn.2014-08.rocks.narf.southpark, |
| ===Log out when you're done (very, very carefully)=== | ===Log out when you're done (very, very carefully)=== | ||
nndocs/iscsi.1734120099.txt.gz · Last modified: 2024/12/13 20:01 by naptastic