- 14 Oct, 2010 40 commits
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Philipp Reisner authored
When the complete device is marked as out of sync, we can disable updates of the on disk AL. Currently AL updates are only disabled if one uses the "invalidate-remote" command on an unconnected, primary device, or when at attach time all bits in the bitmap are set. As of now, AL updated do not get disabled when a all bits becomes set due to application writes to an unconnected DRBD device. While this is a missing feature, it is not considered important, and might get added later. BTW, after initializing a "one legged" DRBD device drbdadm create-md resX drbdadm -- --force primary resX AL updates also get disabled, until the first connect. Signed-off-by:
Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by:
Lars Ellenberg <lars.ellenberg@linbit.com>
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Philipp Reisner authored
Now we have multiple BIOs per ee, packets with a 32 bit length field, it gets time to use these goodies. Signed-off-by:
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Philipp Reisner authored
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Philipp Reisner authored
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Philipp Reisner authored
If we intent to use the block_id member of an epoch entry, we may not use the digest member. Signed-off-by:
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Philipp Reisner authored
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Lars Ellenberg authored
We now track the data rate of locally submitted resync related requests, and can thus detect non-resync activity on the lower level device. If the current sync rate is above c-min-rate, and the lower level device appears to be busy, we throttle the resyncer. Signed-off-by:
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Lars Ellenberg authored
also canonicalize the return values of read_for_csum and drbd_rs_begin_io to return -ESOMETHING, or 0 for success. Signed-off-by:
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Lars Ellenberg authored
The current resync speed as displayed in /proc/drbd fluctuates a lot. Using an array of rolling marks makes this calculation much more stable. We used to have this (a long time ago with 0.7), but it got lost somehow. If "stalled", do not discard the rest of the information, just add a " (stalled)" tag to the progress line. This patch also shortens a spinlock critical section somewhat, and reduces the number of atomic operations in put_ldev. Signed-off-by:
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Lars Ellenberg authored
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Lars Ellenberg authored
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Philipp Reisner authored
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Philipp Reisner authored
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Philipp Reisner authored
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Philipp Reisner authored
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Philipp Reisner authored
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Lars Ellenberg authored
The commit 288f422e drbd: Track all IO requests on the TL, not writes only moved a list_add_tail(req, ) into a region where req may have just been freed due to conflict detection. Fix this by adding a proper cleanup section for that code path. Signed-off-by:
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Philipp Reisner authored
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Philipp Reisner authored
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Philipp Reisner authored
We may not free tl_hash when IO is suspended, since we can not wait until ap_bio_cnt reaches zero. We can do this after susp reched 0, since then tl_clear was called Signed-off-by:
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Philipp Reisner authored
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Philipp Reisner authored
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Philipp Reisner authored
After disconnect (most likely mdev->net_cnt == 0) and we are still in an unstable state (!drbd_state_is_stable()). When we get an IO request in drbd_get_max_buffers() (called from __inc_ap_bio_cond(), called from inc_ap_bio()) we wake up misc_wait. Misc_wait is also used in inc_ap_bio() to sleep until the outcome of __inc_ap_bio_cond() changes. => Busy loop! Solution: Have a dedicated wait queue for get_net_conf() and put_net_conf(). Signed-off-by:
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Philipp Reisner authored
Make sure the state engine can deny two primaries to connect Signed-off-by:
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Philipp Reisner authored
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Philipp Reisner authored
When a fencing policy of "resource-and-stonith" is configured, and DRBD looses connection to it's peer, we can delay the creation of a new current-UUID until IO gets thawed. That allows one to deploy fence-peer handlers that actually commit suicide on the machine they get started. Signed-off-by:
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Philipp Reisner authored
Since we can not thaw the transfer log, the next logical step is to allow reconnects while the fence-peer handler runs. Signed-off-by:
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Philipp Reisner authored
State transitions in the space of non-allowed states used to be very noisy. Reduce that, since that has little value for the majority of the user base. Signed-off-by:
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Philipp Reisner authored
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Philipp Reisner authored
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Philipp Reisner authored
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Philipp Reisner authored
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Philipp Reisner authored
When no data is accessible (no connection to the peer, nor a local disk) allow the user to select to freeze all IO operations instead of getting IO errors. Signed-off-by:
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Philipp Reisner authored
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Philipp Reisner authored
Preparing tl_thaw_dio() Signed-off-by:
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Philipp Reisner authored
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Philipp Reisner authored
If IO was frozen for a temporal network outage, resend the content of the transfer-log into the newly established connection. Signed-off-by:
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Philipp Reisner authored
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Philipp Reisner authored
With that the drbd_fail_pending_reads() function becomes obsolete. Signed-off-by:
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Philipp Reisner authored
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