Vitaliy Filippov
aa436027c8
Required to prevent data loss due to activation of an OSD with older data when PG OSD set change doesn't occur. I.e. fixes the simplest case: - Run 2 OSDs with 1 PG - Start writing into the PG - Stop OSD 2 - Stop OSD 1 - Start OSD 2 After this change the PG will refuse to start after the last step.
43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
// Copyright (c) Vitaliy Filippov, 2019+
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// License: VNPL-1.1 or GNU GPL-2.0+ (see README.md for details)
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#pragma once
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// Placement group states
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// STARTING -> [acquire lock] -> PEERING -> PEERED
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// PEERED -> [report history if required!] -> INCOMPLETE|ACTIVE
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// ACTIVE -> REPEERING -> PEERING
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// ACTIVE -> STOPPING -> OFFLINE -> [release lock]
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// Exactly one of these:
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#define PG_STARTING (1<<0)
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#define PG_PEERING (1<<1)
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#define PG_PEERED (1<<2)
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#define PG_INCOMPLETE (1<<3)
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#define PG_ACTIVE (1<<4)
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#define PG_REPEERING (1<<5)
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#define PG_STOPPING (1<<6)
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#define PG_OFFLINE (1<<7)
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// Plus any of these:
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#define PG_DEGRADED (1<<8)
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#define PG_HAS_INCOMPLETE (1<<9)
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#define PG_HAS_DEGRADED (1<<10)
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#define PG_HAS_MISPLACED (1<<11)
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#define PG_HAS_UNCLEAN (1<<12)
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#define PG_HAS_INVALID (1<<13)
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#define PG_LEFT_ON_DEAD (1<<14)
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// Lower bits that represent object role (EC 0/1/2... or always 0 with replication)
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// 12 bits is a safe default that doesn't depend on pg_stripe_size or pg_block_size
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#define STRIPE_MASK ((uint64_t)4096 - 1)
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// OSD object states
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#define OBJ_DEGRADED 0x02
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#define OBJ_INCOMPLETE 0x04
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#define OBJ_MISPLACED 0x08
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#define OBJ_NEEDS_STABLE 0x10000
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#define OBJ_NEEDS_ROLLBACK 0x20000
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extern const int pg_state_bits[];
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extern const char *pg_state_names[];
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extern const int pg_state_bit_count;
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