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- ssssccccssssiiiiffffoooo((((1111mmmm)))) ssssccccssssiiiiffffoooo((((1111mmmm))))
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- NNNNAAAAMMMMEEEE
- ssssccccssssiiiiffffoooo - Show Failover status and initiate Failover.
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- SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
- The command line syntax of ssssccccssssiiiiffffoooo takes two flavors depending on the use.
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- ssssccccssssiiiiffffoooo ----dddd
- ssssccccssssiiiiffffoooo ----ssss _d_e_v_i_c_e-_n_a_m_e
- ssssccccssssiiiiffffoooo ----tttt _d_e_v_i_c_e-_n_a_m_e
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- DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
- The first form is used to dump failover status, while the second and
- third are used to initiate failover. The _d_e_v_i_c_e-_n_a_m_e required when
- performing a failover should be that of the a disk (raw or block) or a
- devscsi device associated with the primary path of the group the failover
- is being attempted on. The difference between the ----ssss and ----tttt options is
- that the former will choose paths that do not require a controller
- tresspass in preference to paths that do, while the latter will choose
- the next path in the list and automatically issue a tresspass command to
- it. For disk subsystems that do not have a lun ownership property, the
- options are identical.
-
-
- EEEEXXXXAAAAMMMMPPPPLLLLEEEESSSS
- Dumping the current failover status:
-
- The following example shows a single SCSI RAID configured with 8 LUNs.
-
- ssssccccssssiiiiffffoooo ----dddd
-
- sample output:
-
- Group 0:
- [P] sc4d2l7 (587)
- [ ] sc5d2l7 (790)
- Group 1:
- [P] sc4d2l6 (579)
- [ ] sc5d2l6 (782)
- Group 2:
- [P] sc4d2l5 (571)
- [ ] sc5d2l5 (774)
- Group 3:
- [P] sc4d2l4 (563)
- [ ] sc5d2l4 (766)
- Group 4:
- [P] sc4d2l3 (555)
- [ ] sc5d2l3 (758)
- Group 5:
- [P] sc4d2l2 (547)
- [ ] sc5d2l2 (750)
- Group 6:
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- PPPPaaaaggggeeee 1111
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- ssssccccssssiiiiffffoooo((((1111mmmm)))) ssssccccssssiiiiffffoooo((((1111mmmm))))
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- [P] sc4d2l1 (539)
- [ ] sc5d2l1 (742)
- Group 7:
- [ ] sc4d2l0 (531)
- [P] sc5d2l0 (734)
-
- The current primary path is indicated by a [[[[PPPP]]]] in the left column. Each
- LUN is shown as an independent failover group with two paths. For all but
- LUN 0, the primary path is accessed via SCSI bus 4. For LUN 0, the
- primary path is accessible via SCSI bus 5.
-
- Initiating failover:
-
- The following example shows the initiation of failover of Group 5 (see
- above example). The primary path will migrate from SCSI bus 4 to SCSI bus
- 5. Note that the devscsi device name will be used for initiating the
- failover. It is possible to initiate failover using the full canonical
- name, e.g.,
- /hw/module/1/slot/io3/mscsi/pci/2/scsi_ctlr/0/target/2/lun/2/scsi.
-
- ssssccccssssiiiiffffoooo ----ssss sssscccc4444dddd2222llll2222
-
- sample output:
-
- New primary path /hw/module/1/slot/io3/mscsi/pci/3/scsi_ctlr/0/target/2/lun/2/scsi (869) (sc5d2l2)
-
- Another dump of the failover status shows that LUN 2 (group 5) has in
- fact migrated.
-
- ssssccccssssiiiiffffoooo ----dddd
-
- sample output:
-
- Group 0:
- [P] sc4d2l7 (587)
- [ ] sc5d2l7 (790)
- Group 1:
- [P] sc4d2l6 (579)
- [ ] sc5d2l6 (782)
- Group 2:
- [P] sc4d2l5 (571)
- [ ] sc5d2l5 (774)
- Group 3:
- [P] sc4d2l4 (563)
- [ ] sc5d2l4 (766)
- Group 4:
- [P] sc4d2l3 (555)
- [ ] sc5d2l3 (758)
- Group 5:
- [ ] sc4d2l2 (547)
- [P] sc5d2l2 (750)
- Group 6:
-
-
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- PPPPaaaaggggeeee 2222
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- ssssccccssssiiiiffffoooo((((1111mmmm)))) ssssccccssssiiiiffffoooo((((1111mmmm))))
-
-
-
- [P] sc4d2l1 (539)
- [ ] sc5d2l1 (742)
- Group 7:
- [ ] sc4d2l0 (531)
- [P] sc5d2l0 (734)
-
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- FFFFIIIILLLLEEEESSSS
- /usr/sbin/scsifo
- /dev/rdsk/*
- /dev/dsk/*
- /dev/scsi/*
- /etc/init.d/failover
- /etc/failover.conf
- /var/sysgen/master.d/failover
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- SSSSEEEEEEEE AAAALLLLSSSSOOOO
- failover(7M).
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- NNNNOOOOTTTTEEEESSSS
- On bootup, if only a single path is found for a failover group and it's
- _n_o_t the primary, auto failover may be performed depending on the setting
- of the kernel tunable variable ffffoooo____aaaauuuuttttoooo____ffffaaaaiiiilllloooovvvveeeerrrr____oooonnnn____ssssttttaaaarrrrtttt. See
- /var/sysgen/master.d/failover. This does not apply to devices defined
- within the /etc/failover.conf configuration file.
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- PPPPaaaaggggeeee 3333
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