Prasanna Kumar Kalever b6a88dd728 rbd: add volume healer ... Problem: ------- For rbd nbd userspace mounter backends, after a restart of the nodeplugin all the mounts will start seeing IO errors. This is because, for rbd-nbd backends there will be a userspace mount daemon running per volume, post restart of the nodeplugin pod, there is no way to restore the daemons back to life. Solution: -------- The volume healer is a one-time activity that is triggered at the startup time of the rbd nodeplugin. It navigates through the list of volume attachments on the node and acts accordingly. For now, it is limited to nbd type storage only, but it is flexible and can be extended in the future for other backend types as needed. From a few feets above: This solves a severe problem for nbd backed csi volumes. The healer while going through the list of volume attachments on the node, if finds the volume is in attached state and is of type nbd, then it will attempt to fix the rbd-nbd volumes by sending a NodeStageVolume request with the required volume attributes like secrets, device name, image attributes, and etc.. which will finally help start the required rbd-nbd daemons in the nodeplugin csi-rbdplugin container. This will allow reattaching the backend images with the right nbd device, thus allowing the applications to perform IO without any interruptions even after a nodeplugin restart. Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com>		2021-07-16 16:30:58 +00:00
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aws_metadata_test.go	cleanup: addresses paralleltest linter	2021-06-25 11:55:12 +00:00
aws_metadata.go	cleanup: resolve godot linter	2021-07-13 06:50:03 +00:00
cephcmds.go	util: returns actual error instead of ErrPoolNotFound	2021-06-14 14:41:32 +00:00
cephconf.go	cleanup: resolves gofumpt issues of internal codes	2021-07-14 19:50:56 +00:00
conn_pool_test.go	cleanup: resolves gofumpt issues of internal codes	2021-07-14 19:50:56 +00:00
conn_pool.go	cleanup: address ifshort linter issues	2021-05-26 07:04:32 +00:00
connection.go	cleanup: resolve godot linter	2021-07-13 06:50:03 +00:00
credentials.go	cleanup: return error type in util.storeKey()	2020-12-09 08:35:35 +00:00
crypto_test.go	cleanup: addresses paralleltest linter	2021-06-25 11:55:12 +00:00
crypto.go	cleanup: resolves gofumpt issues of internal codes	2021-07-14 19:50:56 +00:00
cryptsetup.go	internal: reformat long lines in internal/util package to 120 chars	2021-06-28 14:43:49 +00:00
csiconfig_test.go	cleanup: resolves gofumpt issues of internal codes	2021-07-14 19:50:56 +00:00
csiconfig.go	cleanup: resolve godot linter	2021-07-13 06:50:03 +00:00
errors_test.go	cleanup: addresses paralleltest linter	2021-06-25 11:55:12 +00:00
errors.go	cleanup: fix mispell words	2020-11-29 12:47:46 +05:30
httpserver.go	cleanup: resolves gofumpt issues of internal codes	2021-07-14 19:50:56 +00:00
idlocker_test.go	cleanup: resolves gofumpt issues of internal codes	2021-07-14 19:50:56 +00:00
idlocker.go	util: remove deleteLock while we acquire clone operation lock	2021-07-16 12:32:28 +00:00
k8s.go	util: rename FatalLog to FatalLogMsg for parity	2020-08-13 09:44:12 +00:00
kms_test.go	cleanup: addresses paralleltest linter	2021-06-25 11:55:12 +00:00
kms.go	cleanup: resolve godot linter	2021-07-13 06:50:03 +00:00
log.go	util: remove unwanted import string from module dependencies	2021-03-24 15:12:13 +00:00
pidlimit_test.go	cleanup: resolves gofumpt issues of internal codes	2021-07-14 19:50:56 +00:00
pidlimit.go	cleanup: address godot warnings	2020-07-21 08:36:24 +00:00
secretskms_test.go	cleanup: addresses paralleltest linter	2021-06-25 11:55:12 +00:00
secretskms.go	cleanup: resolve godot linter	2021-07-13 06:50:03 +00:00
stripsecrets.go	cleanup: move pkg/ to internal/	2020-04-23 11:00:59 +00:00
topology_test.go	cleanup: resolves gofumpt issues of internal codes	2021-07-14 19:50:56 +00:00
topology.go	cleanup: resolves gofumpt issues of internal codes	2021-07-14 19:50:56 +00:00
util_test.go	cleanup: resolves gofumpt issues of internal codes	2021-07-14 19:50:56 +00:00
util.go	rbd: add volume healer	2021-07-16 16:30:58 +00:00
validate.go	internal: reformat long lines in internal/util package to 120 chars	2021-06-28 14:43:49 +00:00
vault_sa_test.go	util: VaultTenantSA KMS implementation	2021-07-13 17:16:35 +00:00
vault_sa.go	util: make parseTenantConfig() usable for modular KMSs	2021-07-13 17:16:35 +00:00
vault_test.go	cleanup: addresses paralleltest linter	2021-06-25 11:55:12 +00:00
vault_tokens_test.go	util: split vaultTenantConnection from VaultTokensKMS	2021-07-13 17:16:35 +00:00
vault_tokens.go	util: make parseTenantConfig() usable for modular KMSs	2021-07-13 17:16:35 +00:00
vault.go	cleanup: resolve godot linter	2021-07-13 06:50:03 +00:00
volid_test.go	cleanup: addresses paralleltest linter	2021-06-25 11:55:12 +00:00
volid.go	cleanup: resolves gofumpt issues of internal codes	2021-07-14 19:50:56 +00:00