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From 7dd1fe266d8c908e8196c93fc371cf205a3d57cb Mon Sep 17 00:00:00 2001
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From: Amar Tumballi <amarts@redhat.com>
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Date: Sun, 4 Feb 2018 10:04:29 +0530
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Subject: [PATCH 143/148] glusterd/store: handle the case of fsid being set to
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 0
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Generally this would happen when a system gets upgraded from an
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version which doesn't have fsid details, to a version with fsid
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values. Without this change, after upgrade, people would see reduced
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'df ' output, causing lot of confusions.
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Debugging Credits: Nithya B <nbalacha@redhat.com>
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>upstream mainline patch : https://review.gluster.org/#/c/19484/
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Change-Id: Id718127ddfb69553b32770b25021290bd0e7c49a
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BUG: 1541830
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Signed-off-by: Amar Tumballi <amarts@redhat.com>
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Reviewed-on: https://code.engineering.redhat.com/gerrit/129739
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Tested-by: RHGS Build Bot <nigelb@redhat.com>
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Reviewed-by: Sunil Kumar Heggodu Gopala Acharya <sheggodu@redhat.com>
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---
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 xlators/mgmt/glusterd/src/glusterd-store.c | 19 +++++++++++++++++++
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 1 file changed, 19 insertions(+)
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diff --git a/xlators/mgmt/glusterd/src/glusterd-store.c b/xlators/mgmt/glusterd/src/glusterd-store.c
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index e35fcde..6bb7372 100644
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--- a/xlators/mgmt/glusterd/src/glusterd-store.c
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+++ b/xlators/mgmt/glusterd/src/glusterd-store.c
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@@ -2632,6 +2632,25 @@ glusterd_store_retrieve_bricks (glusterd_volinfo_t *volinfo)
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                                          strlen(abspath));
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                         }
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                 }
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+
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+                /* Handle upgrade case of shared_brick_count 'fsid' */
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+                /* Ideally statfs_fsid should never be 0 if done right */
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+                if (!gf_uuid_compare(brickinfo->uuid, MY_UUID) &&
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+                    brickinfo->statfs_fsid == 0) {
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+                        struct statvfs brickstat = {0,};
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+                        ret = sys_statvfs (brickinfo->path, &brickstat);
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+                        if (ret) {
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+                                gf_msg (this->name, GF_LOG_WARNING,
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+                                        errno,
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+                                        GD_MSG_BRICKINFO_CREATE_FAIL,
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+                                        "failed to get statfs() call on brick %s",
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+                                        brickinfo->path);
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+                                /* No need for treating it as an error, lets continue
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+                                   with just a message */
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+                        }
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+                        brickinfo->statfs_fsid = brickstat.f_fsid;
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+                }
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+
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                 cds_list_add_tail (&brickinfo->brick_list, &volinfo->bricks);
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                 brick_count++;
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         }
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-- 
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1.8.3.1
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